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747 contributions in the last year
Contribution activity
August 2020
Created a pull request in pingcap/tidb that received 12 comments
transaction: fix union select for update race
What problem does this PR solve?
union select for update statements are executed concurrently, so LockKeys is executed concurrently too, but
LockKeys
+28
−24
•
12
comments
- executor: set the coprocessor concurrency to 1 for simple scan with limit.
- planner: copy column info FieldType when build datasoure schema
- transaction: always lock keys with presume not exists flag
- store/tikv: use unistore instead of mocktikv in unit test
- store/tikv: reduce lock scope
- executor: batch checker skip primary index key for clustered index table
- test: fix unstable TestPessimisticLockOnPartition
- session: switch to pessimistic txn mode for autocommit statement retry.
- planner: refactor buildPhysicalIndexLookUpReader for admin check
- test: debug stable scan test
- executor: support 'recover index' in clustered index tables
- test: try to stablize scan test
- server: support new frame item for cluster index
- Planner: provide settings to prefer index scan over table scan
- *: support clustered index for fast analyze
- executor: fix cluster index encode wrong key in plan cached point get
- txn: fix pessimitic exist check
- test: fix unstable TestPessimisticLockOnPartition (#18963)
- *: use the newly designed memdb
- executor: fix wrong result for update ignore