We are thrilled to unveil the latest release of NebulaGraph Enterprise v3.6.0. This version brings a series of exciting features and improvements, significantly enhancing the user experience for enterprise clients in specific use-cases. Accompanying this release are NebulaGraph Explorer and Dashboard v3.6.0, offering an optimized visual graph exploration and maintenance experience. This post will delve into the key features now supported by NebulaGraph Enterprise v3.6.0.

## Introduced Zone Management
Zone management is a pivotal feature that equips enterprise users with superior reliability and security for their data management, thereby ensuring business continuity. A Zone, referred to as a logical rack of storage nodes in NebulaGraph, segregates multiple Storage nodes into manageable logical zones for resource isolation. Specifically, the introduction of zone management empowers enterprises to achieve:
- Improved safety and reliability: Zone management allows customers to seamlessly achieve disaster recovery for multiple machine rooms and avert data loss.

- Lower cost and better efficiency: Zone management provides customers with superior control over maintenance costs and system efficiency. Customers can anticipate a significant reduction in cross-machine room access traffic and latency, while the system's throughput sees a marked improvement.

![image](https://www-cdn.nebula-graph.io/pic-upload/zone_management.png)

## New Enhancements and Improved Usability
In addition to Zone management, NebulaGraph Enterprise v3.6.0 has introduced a series of crucial features and improvements.

- Boosted efficiency of data exploration and analysis: this updated version now supports HTTP2 protocols and SSL mutual authentication (mTLS), fortifying the security of data transmission. Simultaneously, we have fine-tuned our support for INNER JOIN queries, providing customers with greater flexibility in data querying. Plus, the introduction of the FIND SINGLE SHORTEST PATH function empowers customers to swiftly pinpoint the single shortest path.
- Upgraded performance stability: the optimization of deep queries and Aggregate operators has been taken to the next level, thereby accelerating the query speed and efficiency.
- High availability: The addition of the 'partial success' monitoring indicator ensures that business operations, such as recommendations, remain uninterrupted, even if individual nodes fail. Furthermore, we have refined the reliability mechanisms of RAFT: in the event of a node's disk failure and subsequent inability to write, the system triggers a re-election, guaranteeing the cluster's continued service provision.
- Improved usability: With the latest fixes and enhancements, this version now offers more flexible configuration management and a more user-friendly experience. Now, when adjusting a user, customers can independently modify the password or whitelist.

## Augmented NebulaGraph Explorer and Dashboard
NebulaGraph Explorer now boasts support for CAS login authentication and three innovative message types, thereby enhancing compatibility, optimizing high availability, and streamlining usability.

The NebulaGraph Dashboard has been upgraded to support Zone cluster management, graph space size capacity warning management, and kernel permission management. These enhancements allow customers to manage and monitor their graph database systems with greater ease and efficiency. Moreover, the dashboard now facilitates the analysis of historical slow query statements, pinpointing the cause of slow queries with precision. Additionally, the NebulaGraph Dashboard now offers more adaptable configurations in terms of installation and deployment, enabling customers to deploy flexibly in line with enterprise security requirements.

![image](https://www-cdn.nebula-graph.io/pic-upload/NebulaGraph_3.6_dashboard.png)

## Get started
In essence, NebulaGraph Enterprise v3.6.0 continues to cement its status as a distributed graph database designed for handling super large-scale graphs with milliseconds of latency. With the added support for zone management, NebulaGraph Enterprise now offers customers heightened security, improved efficiency, and more cost-effective maintenance.

We're thrilled to present this enterprise-grade feature in NebulaGraph Enterprise v3.6.0, addressing our customers’ demands for high data reliability and consistency. We invite you to [reach out to us](https://www.nebula-graph.io/contact) for a trial.

**About Vesoft**

Vesoft is devoted to the development of NebulaGraph, an open-source, distributed and scalable graph database. With the ability to handle super-large-scale data sets with hundreds of billions of nodes and trillions of edges while maintaining millisecond-level query latency, NebulaGraph is trusted by leading corporations worldwide across sectors such as banking, financial services, e-commerce, telecommunications, and more. From financial risk management to real-time recommendations and knowledge graph creation, NebulaGraph excels in diverse business scenarios. Headquartered in Cupertino, California, Vesoft is committed to empowering enterprises with stable and reliable infrastructure software. Get started for free at [https://www.nebula-graph.io/](https://www.nebula-graph.io).



We are thrilled to unveil the latest release of NebulaGraph Enterprise v3.6.0. This version brings a series of exciting features and improvements, significantly enhancing the user experience for enterprise clients in specific use-cases.

Announcing NebulaGraph Enterprise v3.6.0: Zone Management Added to Upgrade Business Security and Efficiency

![](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/%20v3.6.0%20Release%20Note%20_%E7%94%BB%E6%9D%BF%201%20%E5%89%AF%E6%9C%AC%202.jpg)

The NebulaGraph Community Edition v3.6.0 has arrived! In this release, we have bolstered the full-text index capabilities and fine-tuned the performance of MATCH operations in select scenarios.

Let's take a quick look at the specific updates introduced in the new version 😄


# Features

- Enhance the full-text index. 
[#5567](https://github.com/vesoft-inc/nebula/pull/5567) [#5575](https://github.com/vesoft-inc/nebula/pull/5575) [#5577](https://github.com/vesoft-inc/nebula/pull/5577) [#5580](https://github.com/vesoft-inc/nebula/pull/5580) [#5584](https://github.com/vesoft-inc/nebula/pull/5584) [#5587](https://github.com/vesoft-inc/nebula/pull/5587)

# Optimizations

- Support variables when querying vertex id or property index in a match clause. [#5486](https://github.com/vesoft-inc/nebula/pull/5486) [#5553](https://github.com/vesoft-inc/nebula/pull/5553)

- Support parallel startup of RocksDB instances to speed up the startup of the Storage service. [#5521](https://github.com/vesoft-inc/nebula/pull/5521)

- Optimize the prefix search performance of the RocksDB iterator after the `DeleteRange` operation. [#5525](https://github.com/vesoft-inc/nebula/pull/5525)

- Optimize the appendLog sending logic to avoid impacting write performance when a follower is down. [#5571](https://github.com/vesoft-inc/nebula/pull/5571)

- Optimize the performance of the `MATCH` statement when querying for non-existent properties. [#5634](https://github.com/vesoft-inc/nebula/pull/5634)

# Bug fixes

- Fix the bug of meta data inconsistency. [#5517](https://github.com/vesoft-inc/nebula/pull/5517)

- Fix the bug that RocksDB ingest causes the leader lease to be invalid. [#5534](https://github.com/vesoft-inc/nebula/pull/5534)
- Fix the error in the statistics logic of storage. [#5547](https://github.com/vesoft-inc/nebula/pull/5547)

- Fix the bug that causes the web service to crash if a flag is set for an invalid request parameter. [#5566](https://github.com/vesoft-inc/nebula/pull/5566)

- Fix the bug that too many logs are printed when listing sessions. [#5618](https://github.com/vesoft-inc/nebula/pull/5618)

- Fix the crash of the Graph service when executing a single big query. [#5619](https://github.com/vesoft-inc/nebula/pull/5619)

- Fix the crash of the Graph service when executing the `Find All Path` statement. [#5621](https://github.com/vesoft-inc/nebula/pull/5621) [#5640](https://github.com/vesoft-inc/nebula/pull/5640)

- Fix the bug that some expired data is not recycled at the bottom level. [#5447](https://github.com/vesoft-inc/nebula/pull/5447) [#5622](https://github.com/vesoft-inc/nebula/pull/5622)

- Fix the bug that adding a path variable in the `MATCH` statement causes the `all()` function push-down optimization to fail. [#5631](https://github.com/vesoft-inc/nebula/pull/5631)

- Fix the bug in the `MATCH` statement that returns incorrect results when querying the self-loop by the shortest path. [#5636](https://github.com/vesoft-inc/nebula/pull/5636)

- Fix the bug that deleting edges by pipe causes the Graph service to crash. [#5645](https://github.com/vesoft-inc/nebula/pull/5645)

- Fix the bug in the `MATCH` statement that returns missing properties of edges when matching multiple hops. [#5646](https://github.com/vesoft-inc/nebula/pull/5646)

# Changes

Enhance full-text index features with the following changes:

- The original full-text indexing function has been changed from calling Elasticsearch's Term-level queries to Full text queries.

- In addition to supporting wildcards, regulars, fuzzy matches, etc. (but the syntax has been changed), support for word splitting (relying on Elasticsearch's own word splitter) has been added, and the query results include scoring results. For more syntax, see [official Elasticsearch documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/full-text-queries.html).

# Legacy versions

[Release notes of legacy versions](https://nebula-graph.io/posts/)



If you come across any problems while using NebulaGraph, please don't hesitate to seek solutions within the [NebulaGraph Database Manual](https://docs.nebula-graph.io/3.6.0/).  It records in detail the knowledge points and specific usage of the graph database NebulaGraph.


Join our [Slack channel](https://nebulagraph.slack.com/ssb/redirect#/shared-invite/email) if you want to discuss with the rest of the NebulaGraph community!


The NebulaGraph Community Edition v3.6.0 has arrived! In this release, we have bolstered the full-text index capabilities and fine-tuned the performance of MATCH operations in select scenarios.

NebulaGraph Database v3.6.0 Release Note

Recently, NebulaGraph Enterprise Edition (v3.5.0) was officially launched. This native distributed graph database has the impressive capability of handling billions of nodes and trillions of edges while maintaining query latency of millisecond-levels. The new version emphasizes the optimization of the database kernel's query performance and stability and comprehensively upgrades the built-in visualization and discovery tools like NebulaGraph Explorer and NebulaGraph Dashboard, making them more user-friendly.

# Enhanced Querying Efficiency: Improved Performance

NebulaGraph has a unique storage-compute separation design and native distributed architecture, facilitating real-time exploration of massive data sets. The new version v3.5.0 further enhances the reliability and stability of the distributed system, improving the query performance significantly. 

Additionally, data import capabilities and full-text index functions have been optimized to better support full-text retrieval, word segmentation, and match return. 

With these improvements, NebulaGraph is equipped to handle real-time processing of complex large-scale data for various business scenarios, such as financial risk control, production management, fraud detection, intelligent Q&A, and investment analysis. It is also suitable for organizing massive industry knowledge graphs and performing AI large-scale model training and multi-type industry intelligence applications.

# Lower User Threshold: Visual Querying with No Code Required

NebulaGraph Explorer is a visual graph data exploration tool based on the NebulaGraph kernel. It supports quickly finding friend relationships, analyzing suspicious targets, and executing graph computing analysis from complex relationships and large amounts of data. It displays graph data in a visual way, which can help you easily analyze and explore business data and quickly discover the association relationships in the data.

![NebulaGraph Explorer:2D/3D mode](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/01.png)

- NebulaGraph Explorer supports 2D/3D visualization data exploration

In terms of data import, NebulaGraph Explorer supports you to import CSV format data into the NebulaGraph database in a visual way. Compared with the previous version, v3.5.0 newly supports cloud storage and SFTP types of data sources, making data import more flexible and convenient.

In terms of data exploration, the workflow function launched supports you to connect graph computing and graph querying in a drag-and-drop manner. You can perform complex graph computing in the visual interface, even if they do not understand the code, they can also achieve visual graph computing through simple clicks.

The new version v3.5.0 further optimizes the user experience of workflow and supports you to save the running results locally, which greatly reduces the time and energy required for you to prepare the environment. In addition, the new version also adds a pre-environment link detection to reduce the probability of runtime errors and greatly improve the usability of workflow.

# Simplified Operations Management: Clear Cluster Status

NebulaGraph Dashboard is a visual operations and maintenance tool developed based on the NebulaGraph kernel. In v3.5.0, NebulaGraph Dashboard has been upgraded for cluster monitoring and diagnostic analysis. The new version supports **customized monitoring panels**. You can select the data indicators displayed on the panel according to the business situation, without the need to switch back and forth between service monitoring and node monitoring. They can grasp the cluster running status on one screen.

![Dashboard: Customized metrics](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/02.png)

- NebulaGraph Dashboard supports customized data indicators

To enhance the efficiency of database operations and maintenance management, the latest version has optimized and enriched the **Cluster Diagnostic Report**, providing an easily understandable overview of the cluster's health status, as well as detailed information on individual nodes, services, sessions, and configurations over a historical period. With this information, you can make recommendations for operations and maintenance, and monitor for potential cluster warnings, all with a clear and concise diagnostic report.

![Cluster diagnostic report](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/03.png)

- NebulaGraph Dashboard supports cluster diagnostic reports, allowing you to monitor cluster status at any time

What's more, the new version v3.5.0 adds the **Slow Query Analysis** function. Through the visual background of NebulaGraph Dashboard, you can always know the basic information and execution time of the slow queries that have been run, which can help DBAs, data engineers, and other users quickly locate slow query statement analysis and performance problems during execution, to make targeted optimizations and further improve the efficiency of operations and maintenance.

NebulaGraph Dashboard also supports one-click deployment of the license management tool (License Manager, LM for short) in a visual way. You can perform LM operation and maintenance management in one place and get timely information about license usage to ensure the healthy operation of the NebulaGraph database kernel and its associated products.

To learn more about NebulaGraph Enterprise Edition, please visit the [**NebulaGraph website**](https://www.nebula-graph.io).



Native distributed graph database with more  user-friendly visualization and discovery tools.

NebulaGraph Enterprise v3.5.0 Released: Significant Query Performance Improvements for Intelligent Decisions and AI Applications

This article provides the performance test report for NebulaGraph Community Edition v3.5.0.

NebulaGraph Database v3.5.0 Benchmark Report

![](https://www-cdn.yueshu.cn/yueshu-website/images/blogs/%E6%96%B0%E9%97%BB%E5%8A%A8%E6%80%81/%20v3.5.0%20Release%20Note_%E7%94%BB%E6%9D%BF%201.jpg)

NebulaGraph Community Edition v3.5.0 is here! This version greatly improves FIND PATH performance.

# Features
Support UDF. [#4804](https://github.com/vesoft-inc/nebula/pull/4804) [#5391](https://github.com/vesoft-inc/nebula/pull/5391)

Support expressions like v.tag in return statements. [#5440](https://github.com/vesoft-inc/nebula/pull/5440)

Support json_extract function in UPDATE statements. [#5457](https://github.com/vesoft-inc/nebula/pull/5457)

Support TCK format in EXPLAIN output. [#5414](https://github.com/vesoft-inc/nebula/pull/5414)

DML supports parameters. [#5328](https://github.com/vesoft-inc/nebula/pull/5328)

# Optimizations

Support TTL in milliseconds. [#5430](https://github.com/vesoft-inc/nebula/pull/5430)

Enhance attribute trimming in aggregation functions. [#5301](https://github.com/vesoft-inc/nebula/pull/5301)

Improve the performance of traversal executor. [#5308](https://github.com/vesoft-inc/nebula/pull/5308)

Optimize FIND ALL PATH performance. [#5409](https://github.com/vesoft-inc/nebula/pull/5409)

Removes some Raft locks to improve performance.[ #5451](https://github.com/vesoft-inc/nebula/pull/5451)

Optimize predicate function filtering for variable-length edges. [#5464](https://github.com/vesoft-inc/nebula/pull/5464) [#5470 ](https://github.com/vesoft-inc/nebula/pull/5470)[#5481](https://github.com/vesoft-inc/nebula/pull/5481) [#5503](https://github.com/vesoft-inc/nebula/pull/5503)

Parallel traversal executor. [#5314](https://github.com/vesoft-inc/nebula/pull/5314)

MATCH supports ID collection. [#5360](https://github.com/vesoft-inc/nebula/pull/5360)

Refactor the GO planner. [#5369](https://github.com/vesoft-inc/nebula/pull/5369)

Add some Graph performance options in the configuration file. [#5463](https://github.com/vesoft-inc/nebula/pull/5463)

Add maximum connection number flag. [#5309](https://github.com/vesoft-inc/nebula/pull/5309)

# Bug fixes

Fix the defect where RocksDB data import invalidates the leader lease. [#5271](https://github.com/vesoft-inc/nebula/pull/5271)

Fix the error message when DESC USER does not exist.[ #5345](https://github.com/vesoft-inc/nebula/pull/5345)

Fix the defect where CREATE IF NOT EXIST fails when SPACE exists. [#5375](https://github.com/vesoft-inc/nebula/pull/5375)

Fix the incorrect edge direction in GetNeighbors plan.[ #5386](https://github.com/vesoft-inc/nebula/pull/5386)

Fix the client IP format in the SHOW SESSIONS command. [#5388](https://github.com/vesoft-inc/nebula/pull/5388)

Fix the defect where attributes are pruned in USE and MATCH. [#5263](https://github.com/vesoft-inc/nebula/pull/5263)

Fix the defect where the filter is not pushed down in some cases. [#5395](https://github.com/vesoft-inc/nebula/pull/5395)

Fix the defect where the filter is incorrectly filtered in some cases. [#5422](https://github.com/vesoft-inc/nebula/pull/5422)

Fix the incorrect handling of internal variables in pattern expressions. [#5424](https://github.com/vesoft-inc/nebula/pull/5424)

Fix defects involving EMPTY comparisons. [#5433](https://github.com/vesoft-inc/nebula/pull/5433)

Fix the defect where duplicate columns are returned when all columns are requested in MATCH. [#5443](https://github.com/vesoft-inc/nebula/pull/5443)

Fix the error in comparing paths involving reflexive edges.[ #5444](https://github.com/vesoft-inc/nebula/pull/5444)

Fix the defect of redefining aliases in a MATCH path. [#5446](https://github.com/vesoft-inc/nebula/pull/5446)

Fix the type check defect when inserting geographical location values. [#5460](https://github.com/vesoft-inc/nebula/pull/5460)

Fix the crash in a shortest path. [#5472](https://github.com/vesoft-inc/nebula/pull/5472)

Fix the crash in GEO. [#5475](https://github.com/vesoft-inc/nebula/pull/5475)

Fix the error in MATCH...contains. [#5485](https://github.com/vesoft-inc/nebula/pull/5485)

Fix the bug of incorrect session count in concurrency. [#5496](https://github.com/vesoft-inc/nebula/pull/5496)

Fix the defect of SUBGRAPH and PATH parameters.[ #5500](https://github.com/vesoft-inc/nebula/pull/5500)

Fix the defect in regular expressions. [#5507](https://github.com/vesoft-inc/nebula/pull/5507)

# Changes

Disable edge list join, not supporting the use of edge list in multiple patterns. [#5268](https://github.com/vesoft-inc/nebula/pull/5268)

Remove GLR parser, needs to change YIELD 1–-1 to YIELD 1– -1. [#5290](https://github.com/vesoft-inc/nebula/pull/5290)


If you encounter any problems in the process of using NebulaGraph, please refer to [NebulaGraph Database Manual](https://docs.nebula-graph.io/3.5.0/) to troubleshoot the problem. It records in detail the knowledge points and specific usage of the graph database NebulaGraph.

Join our[ Slack channel](https://nebulagraph.slack.com/join/shared_invite/zt-7ybejuqa-NCZBroh~PCh66d9kOQj45g#/shared-invite/email) if you want to discuss with the rest of the NebulaGraph community!





NebulaGraph v3.5.0 is released, which supports full table scan without index and greatly improves FIND PATH performance.

NebulaGraph Database v3.5.0 Release Note

This is the performance report for NebulaGraph Community Edition v3.4.0.

In this version, NebulaGraph has added Memory Tracker and has enabled concurrent queries. 

NebulaGraph Database v3.4.0 Benchmark Report

NebulaGraph Database recently released its latest [Enterprise Edition v3.4.0](https://docs.nebula-graph.io/3.4.0/20.appendix/release-notes/nebula-ent-release-note/), further enhancing the stability and ease-of-use of the core product. In this version, the performance of deep queries is significantly optimized, more than 60% better than before, enabling enterprise users to explore the correlation value in massive data more efficiently.

# Guaranteed Security of Data Assets

As the significance of data storage and data mining increasingly matters, data security has become a top concern for enterprises. To meet this demand, NebulaGraph supports incremental backup in v3.4.0  on top of existing data recovery & backup features, ensuring data security and business continuity.

![incremental-backup](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/1.png)

In addition, NebulaGraph also offers more fine-grained permission management in the new version through tag/edge-type level access control so that different roles in the same graph can only see the data within their limits of authority, thus protecting team collaboration security.

# Enhanced Stability and Ease-of-Use

Facing explosive data volume growth, enterprises attach great importance to real-time data queries when selecting a database.
With the latest NebulaGraph Enterprise edition, enterprises can leverage its optimized capability in high availability and stability to explore a sheer volume of connected data with milliseconds latency.


NebulaGraph Enterprise v3.4.0 adds a new black box monitoring tool, which can capture the system status at the moment of abnormality, such as core dump and crash, and pinpoint the issue with the parsing toolkits.

The new version also optimizes memory management and adds Memory Tracker to support more refined memory management control. Users can accurately track the memory resource application of each operator in each query and control it accordingly so as to reduce the probability of OOM.

Furthermore, functions like Kill Session are also added to the latest version to avoid link non-release caused by incorrect operation, which makes it more convenient for DBAs to maintain. The full-text index also becomes more efficient by streamlined deployment and usage constraints.

# Upgraded Graph Visualization Experience

NebulaGraph is committed to building an end-to-end, easy-to-use graph technology ecosystem to accelerate the application and popularization of graph technology. Now it has developed a series of graph visualization products, such as NebulaGraph Studio, NebulaGraph Explorer and NebulaGraph Dashboard, for developers and data scientists to easily explore graph data and intuitively manage NebulaGraph clusters.

NebulaGraph Dashboard, as a multi-cluster visual operation and maintenance tool developed for NebulaGraph, provides monitoring, alerting, backup, diagnosis, upgrade and expansion, which make the work of DBAs and operations personnel easier.

![NebulaGraph-dashboard](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/nebulagraph-dashboard-overview.jpeg)


In NebulaGraph Enterprise Edition v3.4.0, NebulaGraph Dashboard adds incremental backup, runtime log, audit log, and job management functions and displays and configures multiple services. Armed with these features, DBAs and developers are able to view, pause and restore the workspace whenever needed. The new version also has a feedback portal, and users can quickly seek professional support when encountering challenging issues.

Meanwhile, other visualization tools -  NebulaGraph Studio and NebulaGraph Explorer,  are also optimized in terms of schema creation statement view, slow query optimization and significant improvement of visualization presentation effect.

# About NebulaGraph Database

As a high-performance native distributed graph database, NebulaGraph Database excels in handling mega data sets with hundreds of billions of nodes and trillions of edges, while maintaining millisecond query latency. Relying on its shared-nothing, distributed architecture and computation-and-storage separation, it is highly available, highly secure, and easy to scale out, largely meeting the security requirements of enterprises. Besides,  it can be deployed on the public cloud and on-premises as needed.

# Talk to a Graph Database Expert

Get a customized solution for your organization and see how NebulaGraph can help you:

[**Contact NebulaGraph**](https://www.nebula-graph.io/contact)



NebulaGraph Database recently released its latest Enterprise Edition v3.4.0, enabling enterprise users to explore the correlation value in massive data more efficiently.

NebulaGraph Announces General Availability of Enterprise Edition v3.4.0

Along with the release of [NebulaGraph v3.4.0](https://www.nebula-graph.io/posts/nebulagraph-v3.4.0-release-notes), its graph visualization products NebulaGraph Dashboard, NebulaGraph Explorer, and NebulaGraph Studio have also been upgraded to their latest versions. In this article, we will take a quick look at the new features of each visualization product.

# NebulaGraph Dashboard

NebulaGraph Dashboard is a powerful visualization and operations tool for the NebulaGraph database, designed to make the work of DBAs and operations personnel easier. With Dashboard, you can quickly create and import clusters and monitor them in real time, receiving alarms as needed. Additionally, the dashboard offers various operations such as cluster upgrades, scaling, backup and recovery, and service start and stop, making cluster management more straightforward and intuitive.

![NebulaGraph-Dashboard-Overview](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/nebulagraph-dashboard-overview.jpeg)

## New Features of NebulaGraph Dashboard Enterprise Edition

* When system failures occur, troubleshooting problems by reviewing runtime logs is often necessary. The 3.4.0 version of NebulaGraph Dashboard allows viewing NebulaGraph runtime logs, quickly identifying the issues.

![run-time-log](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/2.png)

* In addition to runtime logs, NebulaGraph Dashboard's audit log feature classifies and stores all operations the Graph service receives, making it easy to review NebulaGraph audit logs.

![audit-log](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/3.png)

* Furthermore,  NebulaGraph Dashboard allows for visual management of long-running tasks, also known as jobs, within a specified graph space, including the ability to view, stop, resume, and view the details of individual jobs.

![job-management](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/4.png)

* Additionally, you can also incrementally back up existing backup files on S3 through the Dashboard.

![incremental-backup](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/1.png)


## Enhancements in NebulaGraph Dashboard Community Edition v3.4.0

- Feature
  - Support the built-in dashboard.service script to manage the Dashboard services with one-click and view the Dashboard version.
  - Support viewing the configuration of Meta services.

- Enhancement
  - Adjust the directory structure and simplify the deployment steps.
  - Display the names of the monitoring metrics on the overview page of `machine`.
  - Optimize the calculation of monitoring metrics such as `num_queries`, and adjust the display to time series aggregation.
  

# NebulaGraph Explorer

NebulaGraph Explorer is a web-based visual graph exploration tool. Based on the NebulaGraph Database for visual interaction with graph data, it supports fast finding friends and neighbors,  analyzing suspicious targets, and performing graph computational analysis from complex relationships and large amounts of data.

![NebulaGraph-Explorer](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/nebulagraph-explorer-overview.png)

![NebulaGraph-Explorer-3D](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/nebulagraph-explorer-overview-3d.png)

* The new version of NebulaGraph Explorer supports viewing the schema creation statement for the specified graph space, and you can download the statement or copy it to the console for execution.

*  Removed the timeout limit for viewing slow queries.

This iteration of NebulaGraph Explorer places a major emphasis on product usability and visualization presentation, spending a significant amount of time polishing the functions of the explorer, hoping to help users more quickly and easily explore relationships between data. For more details, please see the [release notes](https://docs.nebula-graph.io/3.4.0/20.appendix/release-notes/explorer-release-note/).

# NebulaGraph Studio

Finally, the open-source web-based graph visualization tool NebulaGraph Studio. It now supports viewing the creation statements of Schema just like NebulaGraph Explorer. And a feedback page is integrated for easier issue collection. Besides, we have made optimization in multiple aspects and fixed some bugs, making it better than ever.


![NebulaGraph-Studio](https://www-cdn.nebula-graph.io/nebula-website-5.0/images/blogs/visualization-3.4.0/nebulagraph-studio-overview.png)

It now supports viewing the creation statements of Schema just like NebulaGraph Explorer. And a feedback page is integrated for easier issue collection. Besides, we have made optimization in multiple aspects and fixed some bugs, making it better than ever.

Get started free with the latest version of NebulaGraph Studio, click the link to download [https://github.com/vesoft-inc/nebula-studio/releases/tag/v3.6.0](https://github.com/vesoft-inc/nebula-studio/releases/tag/v3.6.0)


Are you interested in experiencing the entire NebulaGraph Database Enterprise Edition in one go? Click [here](https://www.nebula-graph.io/contact) to have a 30-day free trial right away!

Along with the release of NebulaGraph v3.4.0, its graph visualization products NebulaGraph Dashboard, NebulaGraph Explorer, and NebulaGraph Studio have also been upgraded to their latest versions. In this article, we will take a quick look at the new features of each visualization product.

NebulaGraph Visualization v3.4.0 Launched to Support Incremental Backup

NebulaGraph Community Edition v3.4.0 is out. This version brings new features of Kill Sessions, Memory Tracker, and so forth, in addition to continuous stability optimization.

# Feature

- Support [killing sessions](https://docs.nebula-graph.io/3.4.0/3.ngql-guide/17.query-tuning-statements/2.kill-session/). [#5146](https://github.com/vesoft-inc/nebula/pull/5146)
- Support [Memory Tracker](https://docs.nebula-graph.io/3.4.0/5.configurations-and-logs/1.configurations/4.storage-config/) to optimize memory management. [#5082](https://github.com/vesoft-inc/nebula/pull/5082)

# Enhancement

- Optimize job management. [#5212](https://github.com/vesoft-inc/nebula/pull/5212) [#5093](https://github.com/vesoft-inc/nebula/pull/5093) [#5099](https://github.com/vesoft-inc/nebula/pull/5099) [#4872](https://github.com/vesoft-inc/nebula/pull/4872)

- Modify the default value of the Graph service parameter `session_reclaim_interval_secs` to 60 seconds. [#5246](https://github.com/vesoft-inc/nebula/pull/5246)

- Adjust the default level of `stderrthreshold` in the configuration file. [#5188](https://github.com/vesoft-inc/nebula/pull/5188)

- Optimize the full-text index. [#5077](https://github.com/vesoft-inc/nebula/pull/5077) [#4900](https://github.com/vesoft-inc/nebula/pull/4900) [#4925](https://github.com/vesoft-inc/nebula/pull/4925)

- Limit the maximum depth of the plan tree in the optimizer to avoid stack overflows. [#5050](https://github.com/vesoft-inc/nebula/pull/5050)

- Optimize the treatment scheme when the pattern expressions are used as predicates. [#4916](https://github.com/vesoft-inc/nebula/pull/4916)

# Bugfix

- Fix the bug about query plan generation and optimization. [#4863](https://github.com/vesoft-inc/nebula/pull/4863) [#4813](https://github.com/vesoft-inc/nebula/pull/4813)

- Fix the bugs related to indexes:

  - Full-text indexes [#5214](https://github.com/vesoft-inc/nebula/pull/5214) [#5260](https://github.com/vesoft-inc/nebula/pull/5260)
  - String indexes [5126](https://github.com/vesoft-inc/nebula/pull/5126)

- Fix the bugs related to query statements:

  - Variables [#5192](https://github.com/vesoft-inc/nebula/pull/5192)
  - Filter conditions and expressions [#4952](https://github.com/vesoft-inc/nebula/pull/4952) [#4893](https://github.com/vesoft-inc/nebula/pull/4893) [#4863](https://github.com/vesoft-inc/nebula/pull/4863)
  - Properties of vertices or edges [#5230](https://github.com/vesoft-inc/nebula/pull/5230) [#4846](https://github.com/vesoft-inc/nebula/pull/4846) [#4841](https://github.com/vesoft-inc/nebula/pull/4841) [#5238](https://github.com/vesoft-inc/nebula/pull/5238)
  - Functions and aggregations [#5135](https://github.com/vesoft-inc/nebula/pull/5135) [#5121](https://github.com/vesoft-inc/nebula/pull/5121) [#4884](https://github.com/vesoft-inc/nebula/pull/4884)
  - Using illegal data types [#5242](https://github.com/vesoft-inc/nebula/pull/5242)
  - Clauses and operators [#5241](https://github.com/vesoft-inc/nebula/pull/5241) [#4965](https://github.com/vesoft-inc/nebula/pull/4965)

- Fix the bugs related to DDL and DML statements:

  - ALTER TAG [#5105](https://github.com/vesoft-inc/nebula/pull/5105) [#5136](https://github.com/vesoft-inc/nebula/pull/5136)
  - UPDATE [#4933](https://github.com/vesoft-inc/nebula/pull/4933)

- Fix the bugs related to other functions:

  - TTL [#4961](https://github.com/vesoft-inc/nebula/pull/4961)
  - Authentication [#4885](https://github.com/vesoft-inc/nebula/pull/4885)
  - Services [#4896](https://github.com/vesoft-inc/nebula/pull/4896)

# Change

- The added property name can not be the same as an existing or deleted property name, otherwise, the operation of adding a property fails. [#5130](https://github.com/vesoft-inc/nebula/pull/5130)
- Limit the type conversion when modifying the schema. [#5098](https://github.com/vesoft-inc/nebula/pull/5098)
- The default value must be specified when creating a property of type `NOT NULL`. [#5105](https://github.com/vesoft-inc/nebula/pull/5105)
- Add the multithreaded query parameter `query_concurrently` to  the configuration file with a default value of `true`. [#5119](https://github.com/vesoft-inc/nebula/pull/5119)
- Remove the parameter `kv_separation` of the KV separation storage function from the configuration file, which is turned off by default. [#5119](https://github.com/vesoft-inc/nebula/pull/5119)
- Modify the default value of `local_config` in the configuration file to `true`. [#5119](https://github.com/vesoft-inc/nebula/pull/5119)
- Consistent use of `v.tag.property` to get property values, because it is necessary to specify the Tag. Using `v.property` to access the property of a Tag on `v` was incorrectly allowed in the previous version. [#5230](https://github.com/vesoft-inc/nebula/pull/5230)
- Remove the column `HTTP port` from the command `SHOW HOSTS`. [#5056](https://github.com/vesoft-inc/nebula/pull/5056)
- Disable the queries of the form `OPTIONAL MATCH <pattern> WHERE <condition>`. [#5273](https://github.com/vesoft-inc/nebula/pull/5273)
- Disable TOSS. [#5119](https://github.com/vesoft-inc/nebula/pull/5119)
- Rename Listener's pid filename and log directory name. [#5119](https://github.com/vesoft-inc/nebula/pull/5119)

# Notes for upgrading

To upgrade to v3.4.0, follow the upgrade guide:

- [Upgrade NebulaGraph to 3.4.0](https://docs.nebula-graph.io/3.4.0/4.deployment-and-installation/3.upgrade-nebula-graph/upgrade-nebula-graph-to-latest/)


>If you encounter any problems in the process of using NebulaGraph, please refer to [NebulaGraph Database Manual ](https://docs.nebula-graph.io/3.4.0/20.appendix/release-notes/nebula-comm-release-note/)to troubleshoot the problem. It records in detail the knowledge points and specific usage of the graph database and the graph database NebulaGraph.

>Join our [Slack channel](https://join.slack.com/t/nebulagraph/shared_invite/zt-7ybejuqa-NCZBroh~PCh66d9kOQj45g) if you want to discuss with the rest of the NebulaGraph community!





NebulaGraph Database v3.4.0 brings new features of Kill Sessions, Memory Tracker, and so forth, in addition to continuous stability optimization.

 NebulaGraph Database v3.4.0 Release Note


![NebulaGraph v3.0.0 Release Note](https://user-images.githubusercontent.com/90186547/154224692-2244e379-843b-4046-958d-3e672c304c90.jpg)

NebulaGraph v3.0.0 is here! The new version introduced a series of new features including enhanced backup and restore, better support for the openCypher query language, and more fine-grained user management.

# Features

* Support backup and restore. [#3469](https://github.com/vesoft-inc/nebula/pull/3469) [#1](https://github.com/vesoft-inc/nebula-agent/pull/1) [#22](https://github.com/vesoft-inc/nebula-br/pull/22)

* Support openCypher queries with multiple `MATCH` statements. [#3519](https://github.com/vesoft-inc/nebula/pull/3519) [#3318](https://github.com/vesoft-inc/nebula/pull/3318)

* Support Standalone NebulaGraph. [#3310](https://github.com/vesoft-inc/nebula/pull/3310)

* Support key value separation for the storage engine. [#3281](https://github.com/vesoft-inc/nebula/pull/3281)

* Support topN push down for `LOOKUP`. [#3499](https://github.com/vesoft-inc/nebula/pull/3499)

* Support vertex without tag. [#3316](https://github.com/vesoft-inc/nebula/pull/3316) [#3335](https://github.com/vesoft-inc/nebula/pull/3335) [#3328](https://github.com/vesoft-inc/nebula/pull/3328) [#3286](https://github.com/vesoft-inc/nebula/pull/3286)

* Support parameterized queries. [#3379](https://github.com/vesoft-inc/nebula/pull/3379)

* Support queries without specifying VIDs but a `LIMIT` clause must be used to restrict the number of results. [#3320](https://github.com/vesoft-inc/nebula/pull/3320) [#3329](https://github.com/vesoft-inc/nebula/pull/3329) [#3262](https://github.com/vesoft-inc/nebula/pull/3262)

* Support duration. [#3338](https://github.com/vesoft-inc/nebula/pull/3338)

* Support most UTF-8 encoded characters of 1 to 4 bytes in Schema.  [#3380](https://github.com/vesoft-inc/nebula/pull/3380) [#3440](https://github.com/vesoft-inc/nebula/pull/3440)

* Support `DESCRIBE USER`.  [#3300](https://github.com/vesoft-inc/nebula/pull/3300)

# Optimizations

- Refactor cluster management. [#3343](https://github.com/vesoft-inc/nebula/pull/3343)

- Add log monitor to check free bytes for log disks, change log level when your graph space is almost full. [#3576](https://github.com/vesoft-inc/nebula/pull/3576)

- Support any string for tag names in apostrophe. [#3424](https://github.com/vesoft-inc/nebula/pull/3424)

- Support that the storage service sends partition disk paths to the meta. [#3369](https://github.com/vesoft-inc/nebula/pull/3369) [#3416](https://github.com/vesoft-inc/nebula/pull/3416)

- Add constraints on invalid password attempts. [#3573](https://github.com/vesoft-inc/nebula/pull/3573) [#3629](https://github.com/vesoft-inc/nebula/pull/3629)

- Support `DELETE` in TOSS. [#3374](https://github.com/vesoft-inc/nebula/pull/3374)

- Support to use logrotate. [#3541](https://github.com/vesoft-inc/nebula/pull/3541)

- Support more metrics. [#3446](https://github.com/vesoft-inc/nebula/pull/3446) [#3605](https://github.com/vesoft-inc/nebula/pull/3605) [#3590](https://github.com/vesoft-inc/nebula/pull/3590)

- Enhancement date and time parser. [#3179](https://github.com/vesoft-inc/nebula/pull/3179)

- Remove read lock in the meta service to reduce the side effect of read-write locks. [#3256](https://github.com/vesoft-inc/nebula/pull/3256)

- Refactor storage indexes to solve the coupling problem between services. [#3196](https://github.com/vesoft-inc/nebula/pull/3196)

- Support specifying the floating point accuracy of the `round()` function. [#3178](https://github.com/vesoft-inc/nebula/pull/3178)ß

- Support HTTPS for the ES client. [#3150](https://github.com/vesoft-inc/nebula/pull/3150)

- Move version info outside of heartbeat. [#3378](https://github.com/vesoft-inc/nebula/pull/3378)

- Support empty list, set, and map. [#3302](https://github.com/vesoft-inc/nebula/pull/3302)

- Support specifying s2 region coverage parameters when creating a geo index. [#3396](https://github.com/vesoft-inc/nebula/pull/3396)

- Add version info for `SHOW HOSTS`. [#3702](https://github.com/vesoft-inc/nebula/pull/3702)

# Bugfix

* Fix the bug that memory is not released when a default value is used and no value is specified in nGQL. [#3666](https://github.com/vesoft-inc/nebula/pull/3666)

- Fix the bug that the function `coalesce()` cannot be used. [#3653](https://github.com/vesoft-inc/nebula/pull/3653)

- Fix the bug that using multiple INSERT on an indexed tag will lead to incorrect LOOKUP results. [#3627](https://github.com/vesoft-inc/nebula/pull/3627)

- Fix the crash when the expression exceeds the depth. [#3606](https://github.com/vesoft-inc/nebula/pull/3606)

- Disable the aggregate function in the `YIELD` and `WHERE` clauses of nGQL. [#3597](https://github.com/vesoft-inc/nebula/pull/3597)

- Fix the crash when using the aggregate function in `UNWILD` and `WHERE` clauses. [#3397](https://github.com/vesoft-inc/nebula/pull/3397) [#3355](https://github.com/vesoft-inc/nebula/pull/3355)

- Fix the bug that the tag index is rebuilt with an old schema version value. [#3332](https://github.com/vesoft-inc/nebula/pull/3332)

- Fix the bug that the query results will still contain the expired edges if we use `GO...REVERSELY`. [#3536](https://github.com/vesoft-inc/nebula/pull/3536)

- Fix the memory estimation error info in CentOS 6.0. [#3534](https://github.com/vesoft-inc/nebula/pull/3534)

- Fix the crash when the `LOOKUP` statement contains a filter that consists of a logical And expression and an IN expression with only one element. [#3525](https://github.com/vesoft-inc/nebula/pull/3525)

- Fix the bug that metad progress is suspended under heavy load. [#3482](https://github.com/vesoft-inc/nebula/pull/3482)

- Fix the unwinding subgraph crash. [#3506](https://github.com/vesoft-inc/nebula/pull/3506)

- Fix the `DROP SPACE` crash when rebuilding an index. [#3406](https://github.com/vesoft-inc/nebula/pull/3406)

- Fix the bug of reading memory stats under cgroup v2. [#3419](https://github.com/vesoft-inc/nebula/pull/3419)

- Fix the bug that `DROP TAG INDEX` deletes the edge index with the same name unexpectedly, and vice versa for the deletion of the tag index. [#3413](https://github.com/vesoft-inc/nebula/pull/3413)

- Fix the bug that edges are not shown after a graph space is cloned. [#3351](https://github.com/vesoft-inc/nebula/pull/3351)

- Fix the index existence check problem. [#3315](https://github.com/vesoft-inc/nebula/pull/3315)

- Fix a bug that running the `ALTER` statement to query the type property may lead to a null pointer obtained by the graph service. [#3325](https://github.com/vesoft-inc/nebula/pull/3325)

- Optimized the Raft to make the system more stable. [#3172](https://github.com/vesoft-inc/nebula/pull/3172) [#3435](https://github.com/vesoft-inc/nebula/pull/3435) [#3358](https://github.com/vesoft-inc/nebula/pull/3358) [#3322](https://github.com/vesoft-inc/nebula/pull/3322) [#3031](https://github.com/vesoft-inc/nebula/pull/3031)

- Cancel memory check when the ratio is greater than 1.0. [#3289](https://github.com/vesoft-inc/nebula/pull/3289)

- Fix the error with ninja-build. [#3195](https://github.com/vesoft-inc/nebula/pull/3195)

- Fix the bug that creating tag and edge with the same name at the same time may both succeed. [#3735](https://github.com/vesoft-inc/nebula/pull/3735)

- Fix the full-text index creation failure when there are the same tags or edges in different spaces. [#3747](https://github.com/vesoft-inc/nebula/pull/3747)

- Fix variable inconsistency in `YIELD` clauses and `GO` statements. [#3430](https://github.com/vesoft-inc/nebula/pull/3430)

- Fix the crash when schema version is greater than 256. [#3893](https://github.com/vesoft-inc/nebula/pull/3893)

# Incompatibility

* NebulaGraph 3.0.0 does not support most ecosystem tools of v2.x, please upgrade the [ecosystem tools](https://docs.nebula-graph.io/3.0.1/20.appendix/6.eco-tool-version/).

- Storage services defined in the configuration files cannot be read or written directly. The configuration files only register the storage services into the meta services. You must run the `ADD HOSTS` command to read and write data on storage servers. [#3343](https://github.com/vesoft-inc/nebula/pull/3343)

- Disable ZONE and GROUP. [#3776](https://github.com/vesoft-inc/nebula/pull/3776) [#3825](https://github.com/vesoft-inc/nebula/pull/3825) [#3330](https://github.com/vesoft-inc/nebula/pull/3330)

- Disable `BALANCE DATA`. [#3756](https://github.com/vesoft-inc/nebula/pull/3756)

- Modify the default session timeout from `0` to `28800` seconds, limit the value to between `1` and `604800` seconds. [#3357](https://github.com/vesoft-inc/nebula/pull/3357) [#3807](https://github.com/vesoft-inc/nebula/pull/3807)

- Add `SHOW LOCAL SESSIONS` and `SHOW LOCAL QUERIES` commands, and deprecate `SHOW ALL QUERIES`. [#3488](https://github.com/vesoft-inc/nebula/pull/3488)

- A tag is not required for a vertex. `DELETE VERTEX` only deletes the vertices and does not delete the related outgoing and incoming edges of the vertices. At this time, there will be hanging edges by default. [#3316](https://github.com/vesoft-inc/nebula/pull/3316) [#3335](https://github.com/vesoft-inc/nebula/pull/3335) [#3328](https://github.com/vesoft-inc/nebula/pull/3328) [#3286](https://github.com/vesoft-inc/nebula/pull/3286)

- Disable the `YIELD` clause to return custom variables. [#3271](https://github.com/vesoft-inc/nebula/pull/3271)

- The `YIELD` clause is required in the `FETCH`, `GO`, `LOOKUP`, `FIND PATH` and `GET SUBGRAPH` statements. [#2957](https://github.com/vesoft-inc/nebula/pull/2957) [#3056](https://github.com/vesoft-inc/nebula/pull/3056) [#3139](https://github.com/vesoft-inc/nebula/pull/3139)

- Add non-reserved keywords: `s2_max_level`, `s2_max_cells`. [#3396](https://github.com/vesoft-inc/nebula/pull/3396)

- It is required to specify a tag to query properties of a vertex in a `MATCH` statement. For example, from `return v.name` to `return v.player.name`. [#3255](https://github.com/vesoft-inc/nebula/pull/3255)

If you encounter any problems in the process of using NebulaGraph, please refer to [NebulaGraph Database Manual](https://docs.nebula-graph.io/3.0.1/pdf/NebulaGraph-EN.pdf) to troubleshoot the problem. It records in detail the knowledge points and specific usage of the graph database and the graph database NebulaGraph.

Join our [Slack channel](https://join.slack.com/t/nebulagraph/shared_invite/zt-7ybejuqa-NCZBroh~PCh66d9kOQj45g) if you want to discuss with the rest of the NebulaGraph community!

NebulaGraph v3.0.0 is here! The new version introduced a series of new features including enhanced backup and restore, better support for the openCypher query language, and more fine-grained user management.

NebulaGraph v3.0.0 Release Note

NebulaGraph v2.6 has just released. In this version, functions such as TOSS, ZONE, Geo Spatial, transmission intelligence, and JSON format return etc. have been added, and the computation of index scan limit pushdown, YIELD data format, memory watermark detection and other functions have been optimized. Also, some bugs have been fixed.

# New Features

* Support TOSS 

https://github.com/vesoft-inc/nebula/pull/2525


* Support ZONE

https://github.com/vesoft-inc/nebula/issues/2604

* Support Geo Spatial 

https://github.com/vesoft-inc/nebula/pull/2954 
https://github.com/vesoft-inc/nebula/pull/2979
https://github.com/vesoft-inc/nebula/pull/3043

* Support crypto in transmission

https://github.com/vesoft-inc/nebula/pull/2584

* Support to return query result as JSON format

https://github.com/vesoft-inc/nebula/pull/2824

* Support to clone space meta

https://github.com/vesoft-inc/nebula/pull/2763

* Support indexScan when using IN expressions in LOOKUP

https://github.com/vesoft-inc/nebula/pull/2906

* Integration Breakpad

https://github.com/vesoft-inc/nebula/pull/2536

* Support to copy the local folder of metad to remote

https://github.com/vesoft-inc/nebula/pull/2532

* Support DELETE TAG

https://github.com/vesoft-inc/nebula/pull/2520

* Support concat function

https://github.com/vesoft-inc/nebula/pull/2540

* Support SHOW META LEADER

https://github.com/vesoft-inc/nebula/pull/2542

# Improvements

* Optimize the computation of index scan limit pushdown

https://github.com/vesoft-inc/nebula/pull/2905 https://github.com/vesoft-inc/nebula/pull/2823 https://github.com/vesoft-inc/nebula/pull/2796

* Optimize the calculation of sampling and limit pushdown at each step of the go statement

https://github.com/vesoft-inc/nebula/pull/2904 https://github.com/vesoft-inc/nebula/pull/2853 https://github.com/vesoft-inc/nebula/pull/2831

* Better yield data format

https://github.com/vesoft-inc/nebula/pull/2555 https://github.com/vesoft-inc/nebula/pull/2572 https://github.com/vesoft-inc/nebula/pull/2779 https://github.com/vesoft-inc/nebula/pull/2895 https://github.com/vesoft-inc/nebula/pull/2944

* Enable prefix bloom filter by default to improve performance

https://github.com/vesoft-inc/nebula/pull/2860

* Support server to verify client version to make sure the connection reliability(client version start from v2.6.0)

https://github.com/vesoft-inc/nebula/pull/2965

* Optimize flow control when pulling the entire partition

https://github.com/vesoft-inc/nebula/pull/2557

* SHOW JOBS only show space related

https://github.com/vesoft-inc/nebula/pull/2872

* Grant job permission for all roles except GUEST

https://github.com/vesoft-inc/nebula/pull/2928

* Improve memory watermark detection

https://github.com/vesoft-inc/nebula/pull/2885

* Support to kill the slow queries of storage 

https://github.com/vesoft-inc/nebula/pull/2534

# Bugfix

* Fixed the bug that part of RocksDB data is cleaned when executing `raftpart::reset`

https://github.com/vesoft-inc/nebula/pull/2522

* Fixed the bug that the nebula connection will be interrupted if the YIELD clause in LOOKUP contains aggregate function

https://github.com/vesoft-inc/nebula/pull/3245

* Fixed the bug that mismatched dates are inserted

https://github.com/vesoft-inc/nebula/pull/2527

* Fixed the bug that setting millisecond failed but microsecond worked

https://github.com/vesoft-inc/nebula/pull/2781

* Fixed the bug that the Meta service crashed when too much data (millions of lines) are inserted in batches

https://github.com/vesoft-inc/nebula/pull/2813

* Fixed the bug that getting edges crashed when no edge schema exists in SPACE

https://github.com/vesoft-inc/nebula/pull/2571

* Fixed the bug that GO with WHERE clause expression eval when the property data type is `FIXED_STRING`

https://github.com/vesoft-inc/nebula/pull/2762

* Fixed the bug of FIND ALL PATH

https://github.com/vesoft-inc/nebula/pull/2773

* Fixed the bug that users without roles have the permission to find all roles of SPACE

https://github.com/vesoft-inc/nebula/pull/2778

* Fixed the bug of the case expression

https://github.com/vesoft-inc/nebula/pull/2819

* Fixed the bug that the infinite loop is returned when using time()

https://github.com/vesoft-inc/nebula/pull/2820

* Fixed the bug that the JOB is still running when the node is already shut down

https://github.com/vesoft-inc/nebula/pull/2843

* Fixed the bug that `INSERT` statements may cause inconsistent property values between replicas in the case of multiple replicas

https://github.com/vesoft-inc/nebula/pull/2862

* Fixed the bug that SPACE goes wrong when submit job after USE

https://github.com/vesoft-inc/nebula/pull/3010

* Fixed the bug that getting attribute error of the thrift structure failed when column is not nullable

https://github.com/vesoft-inc/nebula/issues/3011

* Fixed the bug that graphd is still running even if the meta service is not ready

https://github.com/vesoft-inc/nebula/issues/3048

* Fixed the bug that dangling edge returns a null vertex when using `FIND PATH WITH PROP`

https://github.com/vesoft-inc/nebula/pull/3008

* Fixed the bug that executing `YIELD DISTINCT` map crashes 

https://github.com/vesoft-inc/nebula/pull/3051

* Fixed the bug that the service can still start with a wrong ip/host 

https://github.com/vesoft-inc/nebula/pull/3057

* Fixed the bug that repeatedly modifying the same property in one statement returns an error 

https://github.com/vesoft-inc/nebula/pull/3036

* Fixed the bug that the multi-step filtering on edge is invalid

https://github.com/vesoft-inc/nebula/pull/3144

If you encounter any problems in the process of using Nebula Graph, please refer to [NebulaGraph Database Manual](https://docs.nebula-graph.io/3.0.1/pdf/NebulaGraph-EN.pdf) to troubleshoot the problem. It records in detail the knowledge points and specific usage of the graph database and the graph database Nebula Graph.

Join our [Slack channel](https://join.slack.com/t/nebulagraph/shared_invite/zt-7ybejuqa-NCZBroh~PCh66d9kOQj45g) if you want to discuss with the rest of the NebulaGraph community!

NebulaGraph v2.6 has just released. In this version, functions such as TOSS, ZONE, Geo Spatial, transmission intelligence, and JSON format return etc. have been added, and the computation of index scan limit pushdown, YIELD data format, memory watermark detection and other functions have been optimized. Also, some bugs have been fixed.

NebulaGraph v2.6 Release Note


![v2.0.1 Release note](https://user-images.githubusercontent.com/57335825/115352166-9ee21280-a1e9-11eb-99bf-941af1e50f7e.png)

NebulaGraph v2.0.1 has just been released. This version has mainly improved the performance of NebulaGraph. It has also fixed some bugs.

Check out the new features and improvements in detail below.

# Improvements

- Optimize the performance of `StorageClient` [https://github.com/vesoft-inc/nebula-common/pull/468](https://github.com/vesoft-inc/nebula-common/pull/468)
- HTTP `GetFlags` interface adds support for Unsigned Integers [https://github.com/vesoft-inc/nebula-common/pull/469](https://github.com/vesoft-inc/nebula-common/pull/469) 
- Add check for Raft Listener and Storage Service IP/Port conflicts [https://github.com/vesoft-inc/nebula-graph/pull/875](https://github.com/vesoft-inc/nebula-graph/pull/875) [https://github.com/vesoft-inc/nebula-common/pull/470](https://github.com/vesoft-inc/nebula-common/pull/470)

# Bugfix

- Fix the issue that the `GO` statement fails to yield the source vertex properties [https://github.com/vesoft-inc/nebula-graph/pull/859](https://github.com/vesoft-inc/nebula-graph/pull/859)
- Fix the issue that the services may fail to start when the `logs` directory does not exist [https://github.com/vesoft-inc/nebula-graph/pull/873](https://github.com/vesoft-inc/nebula-graph/pull/873) [https://github.com/vesoft-inc/nebula-storage/pull/403](https://github.com/vesoft-inc/nebula-storage/pull/403)
- Fix the issue that `FIND SHORTEST PATH xxx UPTO N STEPS` return N+1 steps' path when N is an odd number [https://github.com/vesoft-inc/nebula-graph/pull/912](https://github.com/vesoft-inc/nebula-graph/pull/912)
- Fix the issue when taking the output of a query as the input of the `DELETE` statement, `SementicError` is returned [https://github.com/vesoft-inc/nebula-graph/pull/917](https://github.com/vesoft-inc/nebula-graph/pull/917)
- Fix the issue that the return value of the aggregation function is inconsistent with `openCypher` if no item is found [https://github.com/vesoft-inc/nebula-graph/pull/901](https://github.com/vesoft-inc/nebula-graph/pull/901) [https://github.com/vesoft-inc/nebula-common/pull/480](https://github.com/vesoft-inc/nebula-common/pull/480)
- Fix the issue that `GetNeighborsIter()` may return partial results in cluster mode [https://github.com/vesoft-inc/nebula-graph/pull/922](https://github.com/vesoft-inc/nebula-graph/pull/922)
- Fix the issue that illegal filtering of aggregate functions in the "MATCH ... WHERE" clause makes `graphd` crash. [https://github.com/vesoft-inc/nebula-graph/pull/919](https://github.com/vesoft-inc/nebula-graph/pull/919)
- Fix `SemanticError` problem when seeking by negative vid [https://github.com/vesoft-inc/nebula-graph/pull/932](https://github.com/vesoft-inc/nebula-graph/pull/932)
- Fix the issue that the `TAG/EDGE` specification does not work in `SHOW CREATE TAG/EDGE INDEX` clauses [https://github.com/vesoft-inc/nebula-graph/pull/933](https://github.com/vesoft-inc/nebula-graph/pull/933) [https://github.com/vesoft-inc/nebula-storage/pull/426](https://github.com/vesoft-inc/nebula-storage/pull/426)
- Fix the issue that `REBUILD INDEX` returns succeed even if failed sometimes [https://github.com/vesoft-inc/nebula-storage/pull/405](https://github.com/vesoft-inc/nebula-storage/pull/405)
- Fix the issue that the indexes of newly inserted data may fail to update during the rebuilding index process [https://github.com/vesoft-inc/nebula-storage/pull/408](https://github.com/vesoft-inc/nebula-storage/pull/408)
- Fix the issue that using `NULL` in `substr()` or `substring()` makes `graphd` crash [https://github.com/vesoft-inc/nebula-common/pull/491](https://github.com/vesoft-inc/nebula-common/pull/491)

# How to Upgrade

If you are using the NebulaGraph v2.0 GA version, please follow the steps below to upgrade:

- Stop all Nebula services
    - Execute `scripts/nebula.service stop all` on each machine
    - Execute `scripts/nebula.service status  all` to ensure that all processes have exited
- Install the new RPM package on each machine per your system environment
    - Get the package：[https://github.com/vesoft-inc/nebula-graph/releases/tag/v2.0.1](https://github.com/vesoft-inc/nebula-graph/releases/tag/v2.0.1)
    - Install the package
- Start Nebula
    - Execute `scripts/nebula.service start all` on each machine
    - Execute `scripts/nebula.service status all` to ensure that all processes have started properly

If you are using other versions of NebulaGraph, please refer to [how to upgrade](https://docs.nebula-graph.io/2.0/4.deployment-and-installation/3.upgrade-nebula-graph) to first upgrade to v2.0 GA and then follow the steps above to upgrade from v2.0 GA to v2.0.1.

If you have any problem, please head over to the [Discussions](https://github.com/vesoft-inc/nebula/discussions) for discussion.

NebulaGraph v2.0.1 has just been released. This version has mainly improved the performance of NebulaGraph. It has also fixed some bugs.