Weekly update in TiDB

Last week, we landed 41 PRs in the TiDB repository.

Added

• Make the Performance.*, OOMAction and MemQuotaQuery config items support hot-reloading
• Make SQL bind work when executing select and explain select statements
• Add the memory table to show Region information
• Support CMSketch with TopN

Improved

• Change the offset type of chunk to int64
• Make tidb_disable_txn_auto_retry disable retry for explicit transactions
• Refine point get failpoint
• Check time zone when encoding timestamp datum
• Check whether the TiKV instance is stopped when recreating connection to it
• Add transaction commit time to slow log
• Ignore the overflow error when constructing inner keys
• Support pre-splitting Region for the partitioned table
• Enhance Index Join

Fixed

• Fix the issue that TiDB handles leap year incorrectly in some cases
• Fix incorrect Internal display in the admin show slow output
• Fix data race of parser in the global handle
• Fix the issue that timestampadd is not compatible with MySQL
• Fix wrong judgment conditions when judging point get
• Fix the issue that JSON_CONTAINS is not compatible with MySQL
• Fix the wrong privilege check for update in some cases
• Fix the wrong error message when granting to a non-existent user

Weekly update in TiSpark

Last week, we landed 4 PRs in the TiSpark repository.

Fixed

• Fix the issue that tempView might be unresolved when applying a timestamp to the plan
• Fix the issue that Catalog is not closed when Session closes

Weekly update in TiKV and PD

Last week, we landed 21 PRs in the TiKV and PD repositories.

Added

• Share block cache among column families
• Add the AVG batch aggregate function
• Add the LogicalAnd RPN function
• Enable using Region storage by default in PD config
• Add the LogicalOr RPN function
• Add the LTReal, LEReal, GTReal, GEReal, NEReal, EQReal RPN functions
• Add more fuzz tests
• Add an execution summary framework for non-batch executors

Improved

• Simplify the usage of RpnExpressionBuilder
• Enhance the error report for fuzzing
• Rename and move ExecSummary to support non-batch executors
• Simplify the exec summary
• Support the exec summary for normal table/index scan executor
• Tune SstFileWriter options to reduce CPU usage in Importer

Fixed

• Register mailbox before sending in tests
• Fix read pool names
• Update Raft to 0.4.2

New contributors (Thanks!)

tidb:

• gunjanpatidar
• ian-p-cooke
• mantuliu

tikv:

• yeshengm

tidb-operator:

• jlerche