NebulaGraph v2.0.1 Release Note

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
• HTTP GetFlags interface adds support for Unsigned Integers 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-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
• 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-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
• 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
• 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-common/pull/480
• Fix the issue that GetNeighborsIter() may return partial results in cluster mode 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
• Fix SemanticError problem when seeking by negative vid 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-storage/pull/426
• Fix the issue that REBUILD INDEX returns succeed even if failed sometimes 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
• Fix the issue that using NULL in substr() or substring() makes graphd crash 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
  • 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 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 for discussion.