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Latest Release Version2023.03.08

NebulaGraph DB v3.4.1

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This source code is licensed under the Apache 2.0 license, and supported by the community

Archived Release Version

Release Note v3.4.1


  • Support killing sessions. #5146

  • Support Memory Tracker to optimize memory management. #5082


  • Optimize job management. #5212 #5093 #5099 #4872

  • 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

  • Optimize the full-text index. #5077 #4900 #4925

  • 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 crash caused by encoding the parameter expression and evaluating it in the storage. #5336

  • Fix the crash of some list functions. #5383

  • Fix the bug about query plan generation and optimization. #4863 #4813

  • Fix the bugs related to indexes:

  • Fix the bugs related to query statements:

  • 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 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

  • 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:

NebulaGraph Products

NebulaGraph Studio v3.6.2

NebulaGraph Studio (Studio for short) is a web-based visualization tool for NebulaGraph. With Studio, you can create a graph schema, import data, edit nGQL statements for data queries, and explore graphs in one stop.

NebulaGraph Dashboard v3.4.0

NebulaGraph Dashboard is a tool that assists NebulaGraph service operation and maintenance personnel in daily service monitoring and management.

NebulaGraph Ecosystem Tools

NebulaGraph Clients v3.4.0

For developers to connect their projects to NebulaGraph.

NebulaGraph Console v3.4.0

NebulaGraph Console (Console for short) is a console for NebulaGraph. With Console, you can create a graph schema, import the demonstration nba dataset, and retrieve data.

NebulaGraph Bench v1.2.0

NebulaGraph Bench is a tool to test the NebulaGraph benchmark by using LDBC dataset.Currently. It only support NebulaGraph 2.0+ release.

NebulaGraph Importer v3.4.0

NebulaGraph Importer is a CSV importing tool. It reads data in the local CSV files and imports data into NebulaGraph.

NebulaGraph Exchange v3.4.0

NebulaGraph Exchange is to migrate both batch and streaming data of multiple formats from a distributed system to NebulaGraph.

NebulaGraph Flink Connector v3.3.0

NebulaGraph Flink Connector supports read data from NebulaGraph to Flink and write data to NebulaGraph from external sources.

NebulaGraph Spark Connector v3.4.0

NebulaGraph Spark Connector provides the capability to read data from and write data to NebulaGraph in a standard format required by Spark.

NebulaGraph Algorithm v3.1.0

NebulaGraph Algorithm is a Spark application based on GraphX. It uses a complete algorithm tool to perform graph computing on the data in the NebulaGraph database by submitting a Spark task.

NebulaGraph BR v3.3.0

Backup and Restore (BR) is a CommandLine Interface Tool to back up data of graph spaces of NebulaGraph and to restore data from the backup files.