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NebulaGraph 3.4.0 release notes



  • Modify the default value of the Graph service parameter session_reclaim_interval_secs to 60 seconds. #5246
  • Adjust the default level of stderrthreshold in the configuration file. #5188
  • Limit the maximum depth of the plan tree in the optimizer to avoid stack overflows. #5050
  • Optimize the treatment scheme when the pattern expressions are used as predicates. #4916


  • Fix the bug about query plan generation and optimization. #4863 #4813
  • Fix the bugs related to indexes:

  • Fix the bugs related to DDL and DML statements:

  • Fix the bugs related to other functions:


  • 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
  • Limit the type conversion when modifying the schema. #5098
  • The default value must be specified when creating a property of type NOT NULL. #5105
  • Add the multithreaded query parameter query_concurrently to the configuration file with a default value of true. #5119
  • Remove the parameter kv_separation of the KV separation storage function from the configuration file, which is turned off by default. #5119
  • Modify the default value of local_config in the configuration file to true. #5119
  • Consistent use of to get property values, because it is necessary to specify the Tag. Using to access the property of a Tag on v was incorrectly allowed in the previous version. #5230
  • Remove the column HTTP port from the command SHOW HOSTS. #5056
  • Disable the queries of the form OPTIONAL MATCH <pattern> WHERE <condition>. #5273
  • Disable TOSS. #5119
  • Rename Listener's pid filename and log directory name. #5119

Notes for upgrading

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

Legacy versions

Release notes of legacy versions

Last update: February 19, 2024