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the performance of merge sort phase for global sort is poor #48072

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wjhuang2016 opened this issue Oct 30, 2023 · 0 comments · Fixed by #48073
Closed

the performance of merge sort phase for global sort is poor #48072

wjhuang2016 opened this issue Oct 30, 2023 · 0 comments · Fixed by #48073
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affects-7.5 component/ddl This issue is related to DDL of TiDB. severity/major type/bug The issue is confirmed as a bug.

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@wjhuang2016
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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

It use 1 thread to do merge sort, which is slow

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 type/bug The issue is confirmed as a bug. severity/major labels Oct 30, 2023
@ti-chi-bot ti-chi-bot bot added may-affects-5.3 This bug maybe affects 5.3.x versions. may-affects-5.4 This bug maybe affects 5.4.x versions. may-affects-6.1 may-affects-6.5 may-affects-7.1 may-affects-7.5 labels Oct 30, 2023
@wjhuang2016 wjhuang2016 added affects-7.5 and removed may-affects-5.3 This bug maybe affects 5.3.x versions. may-affects-5.4 This bug maybe affects 5.4.x versions. may-affects-6.1 may-affects-6.5 may-affects-7.1 may-affects-7.5 labels Oct 30, 2023
@wjhuang2016 wjhuang2016 mentioned this issue Oct 30, 2023
Merged
13 tasks
ti-chi-bot bot pushed a commit that referenced this issue Nov 2, 2023
@wjhuang2016
external: merge overlapping files concurrently (#48073)
028d7b8 
close #48072
@ti-chi-bot ti-chi-bot mentioned this issue Nov 2, 2023
Merged
13 tasks
ti-chi-bot bot pushed a commit that referenced this issue Nov 2, 2023
@ti-chi-bot
external: merge overlapping files concurrently (#48073) (#48215)
457c000 
close #48072
@jebter jebter added the component/ddl This issue is related to DDL of TiDB. label Nov 23, 2023
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affects-7.5 component/ddl This issue is related to DDL of TiDB. severity/major type/bug The issue is confirmed as a bug.
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external: merge overlapping files concurrently wjhuang2016/tidb
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@jebter @wjhuang2016