Weekly update in TiDB

Last week, we landed 48 PRs in the TiDB repositories.

Added

• Support the builtin aggregation function bit_or.

Removed

• Remove the old JSON type.
• Remove the HashSemiJoin plan and executor.

Fixed

• Support showing the current auto_increment id in the result of show create table.
• Fix a bug of NewIndexLookUpJoin's Next().
• Fix the trigger condition for AutoAnalyze.
• Only rebuild the range when using prepared cache.

Improved

• Merge ApplyExec and NestedLoopJoin into NestedLoopApply.
• Refine the UnionAll plan building.
• Metrics: record details of the RPC type and store id.
• Replace JSON with BinaryJSON.
• Collect and store the query feedback.
• Make the function ExtractColumns more efficient.
• Add BinaryJSON functions.
• Enhance the index join, making it can be used for more scenarios.
• Graceful shutdown will wait clients to close.
• Support Chunk in executors:
  • LoadData
  • GrantExec
  • RevokeExec
  • DeallocateExec
  • SimpleExec
  • AnalyzeExec
  • TableScanExec
  • ShowDDLjobsExec
  • TableDualExec
  • ReplaceExec
  • DeleteExec
  • MergeJoinExec

Weekly update in TiSpark

Last week, we landed 10 PRs in the TiSpark repositories.

Added

• Add counting single column tests.
• Add request.timezone.offset config.
• Add the test framework for each issue.
• Add index related integration tests.
• Add debug utils.
• Add null data for DAG test cases.

Removed

• Remove timezone in the TisparkTest.sql file.

Fixed

• Fix the Load tests problem.
• Fix the test framework concerning null tests.

Weekly update in TiKV and PD

Last week, we landed 13 PRs in the TiKV and PD repositories.

Added

• Support Raft Learner.
• Add transaction tests with fail-rs.
• Add more configurations for the RocksDB column family.
• Add more complex configurations for the PD simulator.
• Coprocessor: collect output counts for each executor.

Fixed

• PD: support join without scheme.
• Return the stale epoch error for retry.
• Add the require option to the addr command flag.
• Update rustc_serialize to pass newer Rust version compilation.

Improved

• Coprocessor: speed up the CM sketch test.
• Add key_only to avoid fetching the data value.
• Avoid calling Raft status to reduce allocation.

New contributors (Thanks!)

TiKV:

• Jiahao Huang
• Andrew Hobden