Figure distributed database Nebula RC2 released: CSV Importer enhanced functionality

Nebula Graph is an open source distributed database diagram, it can be applied to mapping knowledge, social recommendation, risk control, IoT and other scenes.

The major new RC2 GO FROM ... REVERSELY and GROUP BY other statements, Storage Engine is also more flexible, the user can obtain configuration information through Console or Http, trigger compaction; client currently supports Python, Java, Go; in tools, enhanced functionality CSV Importer

Query Engine

• Support GROUP BY statement aggregate functions, grouped according to the result set one or more attributes. # 749
• UPDATE CONFIGS Increased expression of support for # 1273
• Support change the log level by Console # 1273
• New "IF ... RETURN ...", returns the corresponding result when the conditions are met, provided certain if else logic skills # 1233  , # 1246
• String  Data type supports unlimited length # 1103
• Side of the insertion point, and SQL, since it allows the order of the attribute name entered by the user to insert (property name order rather than the Schema) # 1219
• Tag/Edgetype Property supports set the default value # 860
• New GO FROM ... REVERSELY query inverse relationship  # 1349

Storage

• New SHOW PARTS acquisition of the SPACE current partition details # 1086
• New BALANCE STOP pause Balance the Load # 1238
• Support and trigger RocksDB compaction manually flush # 677 , # 1240
• RocksDB default BlockBasedTable size changed from 4 MB MB 1024 # 1248
• gflags in New max_edge_returned_per_vertex option to limit the number of super-vertex return side # 1221
• Storage increased to the point buffer # 1294 # 1268
• Upgrade dependencies Folly, fbthrift # 1161

Tools

• Importer optimization CSV, CSV Importer new image, the user can use the CSV Docker import data, please see https://github.com/vesoft-inc/nebula-importer

Client

• New Python client, uploaded PyPI, using examples and see https://github.com/vesoft-inc/nebula-python
• Golang client, using examples and see https://github.com/vesoft-inc/nebula-go
• Java client to upload the official Repo, using examples and see  https://github.com/vesoft-inc/nebula-java

Changed/Removed

• Command ADD/REMOVE HOSTS is no longer supported, hosts are automatically discovered, users no longer need to manually add

RC3 Roadmap

• Query Engine
  • Subgraph

• Storage
  • Snapshot
  • index
  • Remove / Scan Interface
  • Jepsen
• Tools
  • DumpTool
• Test Framework
  • Regression Testing
  • Chaos test
• UI
  • Inquire
  • CSV data import
  • Hash Tool
  • Graph Exploration

Finally, the Nebula GitHub address, welcome to try, what questions we can to raise issue. GitHub Address: https://github.com/vesoft-inc/nebula