Weekly update in TiDB

Last week, we landed 69 PRs in the TiDB repository.

Added

• Make TxnEntryCountLimit and TxnTotalSizeLimit configurable
• Add delay-clean-table-lock when the session is closed
• Add the affinity-cpus starting argument
• Allow more charset/collation modifications for the database/table

Improved

• Disallow modifying the generated expression of a stored or an indexed column
• Remove the maximum gRPC message limitation for key-value requests
• Add a recover in the runDDLJob function

Fixed

• Fix a logical error about update ignore introduced in the previous refactoring process
• Fix the issue that the decimal fraction is missed for the default CURRENT_TIMESTAMP
• Fix the invalid key error of fast Analyze
• Make a deep copy of the string when assigning it to a user variable
• Handle the unsigned primary key for fast Analyze
• Fix the PointGet snapshot TS for pessimistic transactions
• Fix a bug of canceling an OOM action
• Fix a bug that double closes channels
• Fix a corner case in the column pruning rule
• Fix a bug of modifying a column from null to not null
• Make the sleep function respond to the KILL statement

Weekly update in TiSpark

Last week, we landed 18 PRs in the TiSpark repository and released TiSpark 2.1.1 and 1.2.1.

Added

• Support Region split for tables
• Add support for delaying cleaning the table lock

Fixed

• Fix the count error when advanceNextResponse is empty
• Fill zero for an encoding binary type

Weekly update in TiKV and PD

Last week, we landed 34 PRs in the TiKV and PD repositories.

Improved

• Set blob_run_mode=ReadOnly for non-default CFs
• Ignore the not found error when rotating log files
• Reduce the size of Duration to 8 bytes
• Handle BatchCommandsEmptyRequest
• Keep the comment consistent with the code
• Optimize memtable desc scan
• Log all divergent routines when filtering the target store
• Tune the default limit for hot Region scheduling
• Remove the limit on the size of received messages
• Set influence according to the Region size
• Check the maximum number of open files required for Titan
• Refine convert_*_to_int functions

Added

• Add the titan-key-only option
• Support the variable number of arguments
• Adds the /config endpoint to the status server that returns the TiKV configuration
• Support the request snapshot on the leader's side
• Add the abs RPN function
• Add the IN() RPN function
• Support CASE_WHEN

Fixed

• Check the replica for hot Regions
• Fix duplicated plus assign

New contributors (Thanks!)

tidb:

• tcmichael

tikv:

• jlerche
• mapleFU

tidb-operator:

• shinnosuke-okada
• thecodeassassin