Jack Yu

Unique key lock not consistent when row is changed or not

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## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) ``` mysql> show create table t; +-------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table...

*: reduce logs of too many pings

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Signed-off-by: Jack Yu ### What problem does this PR solve? Issue Number: close #36861 Problem Summary: https://github.com/pingcap/tidb/pull/17885 reduced parts of this kind of logs, it could still be found in...

Combine SQL with the same digest in Statements

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## Feature Request **Is your feature request related to a problem? Please describe:** In some scenarios, it is possible that the SQLs for different databases are the same. It is...

Revert "planner: remove the useless variable tidb_enable_point_get_cache"

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### What problem does this PR solve? Issue Number: close #51007, also will close #48958 Problem Summary: ### What changed and how does it work? Revert https://github.com/pingcap/tidb/pull/36844 Add `tidb_enable_point_get_cache` back....

If the requests are retriable, high log level will make the log files too noisy.

`RecordHistoricalStatsToStorage` used too much memory

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## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) It seems that there are many long insert internal SQL statements in...

domain: fail fast when infoSchema is expired

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### What problem does this PR solve? Issue Number: close #47377 Problem Summary: Remove the retries. ### What is changed and how it works? ### Check List Tests - [x]...

*: set default shard_row_id_bits and pre_split_regions for all tables

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### What problem does this PR solve? Issue Number: close #55716 Problem Summary: ### What changed and how does it work? ### Check List Tests - [x] Unit test -...