tidb

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

set @@max_allowed_packet=default;

2. What did you expect to see? (Required)

mysql> set @@max_allowed_packet=default;
ERROR 1621 (HY000): SESSION variable 'max_allowed_packet' is read-only. U

Error 报告

This repository is ONLY used to solve problems related to DOCS-CN.
For other issues (TiDB, TiKV, etc), please move to other repositories.

Please answer the following questions before submitting your issue. Thanks!

Feature Request

Is your feature request related to a problem? Please describe:

The shared informer factory has called the WaitForCacheSync method, and it is no longer need to call it separately for each controller. We can remove Informer ().HasSynced because it will not be used.

See questdb/questdb#595.

In pingcap/docs#695 we determined that SQL keywords should be in all caps. There are a number of pages that require updating.

Question

TiDB-Lightning doesn't need data to keep in order of _tidb_rowid, but we still sort data in the order of _tidb_rowid. This may increase TiDB's memory usage because we'll need a global sort in TiDB.

Fix typos in the code repository.

The best practices of reporting errors:

1. The error message should be more user-friendly. Bad case: The table 101 exceeds table size. Good case: The table tbl exceeds table size.
2. Provide workarounds if necessary. Bad case: The table tbl exceeds table size. Good case: The table tbl exceeds table size. Please try to turn up the value of the system variable tmp_table_size.
3. Define

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   If possible, provide a recipe for reproducing the error.
   we didn't record store id when download/ingest sst failed.

2. What did you expect to see?
   the error log with store id.

3. What did you see instead?
   only the error.

4. What version of BR and TiDB/TiKV/PD are you using?

all version.