TiDB Weekly

Community

New contributors

tidb:

• young-127
• yongchaoyan
• chacha923
• liugangjian

parser:

• ekalinin
• sim41

docs-cn:

• elvizlai

Call for participation

• Vectorized Expression Working Group
  • Date or Time built-in functions (14/65)
  • Decimal built-in functions (15/31)
  • Int built-in functions (69/187)
  • JSON built-in functions (13/27)
  • Real built-in functions (41/49)
  • String built-in functions (53/133)
  • Duration built-in functions (13/45)
  • Last week, 30 PRs are landed in the expression component.
• Issues to solve for TiDB
• Issues to solve for TiKV

Updates of the week

Progress

Last week, we landed 77 PRs in the TiDB repository, 6 PRs in the TiSpark repository, and 34 PRs in the TiKV and PD repositories.

Critical PRs

TiDB:

• Introduce TransformationID in the cascades planner
• Fix the issue that the snapshot does not cache the non-existing KV entries that lead to the poor insert ignore performance
• Reuse the chunk row for the row insertion on the duplicate update
• Fix the panic caused by the data race in GetDirtyTable()
• Support CREATE VIEW on the union
• Make requests fail quickly when the dial times out

TiSpark:

• Fix the No Matching column bug

TiKV and PD:

• Add the checksum feature for the backup and restore
• Update the rust-rocksdb to avoid the intra-L0 compaction issue
• Revert the approximate update in the pd-worker
• Add used_size for the store API
• Fix the race issue of the scatter range scheduler
• Add options to enable the placement rules