Weekly update in TiDB

Last week, we landed 43 PRs in the TiDB repositories.

Added

• Add an option to disable Chunk.
• Add the schema info API of the http status server.

Removed

• Remove the Align method of IndexRange.

Fixed

• Set the priority for IndexLookupExecutor when reading the table.
• Fix the length metadata of the decimal column returned to the client.
• Fix the bug about auto-increment key after renaming a table from the old DB to another DB.
• Fix large float64 to bigint.
• Notify TiDB of updating privileges after Alter User and Drop user.

Improved

• Refine codes and make backoffer the is-a go context.
• Refactor NewDomain.
• Speed up loading full stats info.
• Speed up loading stats info when the server is started.
• Remvove the hasGby field.
• Limit the Chunk size to MaxChunkSize.
• Remove the useless object clone.
• Split Selection to the logical plan and physical plan.
• Move Range to the package ranger.
• No longer treat DML as a logical/physical plan.
• Support Chunk in:
  • LimitExec
  • Sort
  • SelectionExec

Weekly update in TiSpark

Last week, we landed 6 PRs in the TiSpark repositories.

Added

• Support the version print for both the client and TiSpark.

Fixed

• Fix the inconsistent timezone behavior of Datetime.
• Fix wrongly folded common aggregation expressions.
• Fix the inconsistent PD cache eviction and add capture for leaked exception.

Weekly update in TiKV

Last week, we landed 17 PRs in the TiKV and PD repositories.

Added

• Implement the count-min sketch in TiKV Coprocessor.
• Add the fake TiKV client.
• Add TLS support in TiKV and PD.

Fixed

• Fix weird leader distribution after adding a new node and restarting.
• Fix wrong key range generation in tests.
• Fix wrong default features.

Improved

• Limit the generation IO of region snapshot.
• Update to protobuf 3.
• Reduce the slow log in endpoint and scheduler.
• Use readyNotify of etcd.
• Always link to RocksDB statically.
• Use the latest rust-prometheus.
• Update RocksDB to 5.8.

New contributors (Thanks!)

• TiDB: Johnny Bergström
• Docs: Du Chuan