If multiple TiDBs are upgraded concurrently, the upgrade may block. #46228
Labels
affects-7.1
component/ddl
This issue is related to DDL of TiDB.
severity/major
type/bug
The issue is confirmed as a bug.
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
Start a cluster, it has two TiDBs, and the version is v7.1.1.
Then upgrade TiDB1 and TiDB2 to master in the meantime.
PauseAllJobsBySystem
, TiDB2 does bootstrap's DDL ops(likeadd column
for tidb_background_subtask).add column
for tidb_background_subtask), TiDB1 doesPauseAllJobsBySystem
2. What did you expect to see? (Required)
Upgrade successfully.
3. What did you see instead (Required)
Upgrade block(
add column
for tidb_background_subtask block).4. What is your TiDB version? (Required)
master
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