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bad performance for global sort if key is small and has hotspot #47923

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wjhuang2016 opened this issue Oct 23, 2023 · 0 comments · Fixed by #48063
Closed

bad performance for global sort if key is small and has hotspot #47923

wjhuang2016 opened this issue Oct 23, 2023 · 0 comments · Fixed by #48063
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affects-7.5 component/ddl This issue is related to DDL of TiDB. feature/developing the related feature is in development severity/moderate type/bug The issue is confirmed as a bug.

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Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

bad performance for global sort if key is small and has hotspot

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

3. What did you see instead (Required)

4. What is your TiDB version? (Required)

master
@wjhuang2016 wjhuang2016 added the type/bug The issue is confirmed as a bug. label Oct 23, 2023
@seiya-annie seiya-annie added component/ddl This issue is related to DDL of TiDB. severity/moderate feature/developing the related feature is in development labels Oct 25, 2023
@wjhuang2016 wjhuang2016 mentioned this issue Oct 29, 2023
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ti-chi-bot bot pushed a commit that referenced this issue Oct 30, 2023
@wjhuang2016
external: set the period of checking merge iter hotspot according to …
f325595 
…the key size (#48063)

close #47923
@ti-chi-bot ti-chi-bot mentioned this issue Oct 30, 2023
Merged
13 tasks
ti-chi-bot bot pushed a commit that referenced this issue Oct 31, 2023
@ti-chi-bot
external: set the period of checking merge iter hotspot according to …
4de802f 
…the key size (#48063) (#48121)

close #47923
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affects-7.5 component/ddl This issue is related to DDL of TiDB. feature/developing the related feature is in development severity/moderate type/bug The issue is confirmed as a bug.
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external: set the period of checking merge iter hotspot according to the key size wjhuang2016/tidb
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@jebter @wjhuang2016 @seiya-annie