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Index FMSketch takes up too much TiDB memory #42052

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xuyifangreeneyes opened this issue Mar 9, 2023 · 1 comment · Fixed by #42074
Closed

Index FMSketch takes up too much TiDB memory #42052

xuyifangreeneyes opened this issue Mar 9, 2023 · 1 comment · Fixed by #42074
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affects-5.1 This bug affects 5.1.x versions. affects-5.2 This bug affects 5.2.x versions. affects-5.3 This bug affects 5.3.x versions. affects-5.4 This bug affects 5.4.x versions. affects-6.0 affects-6.1 affects-6.2 affects-6.3 affects-6.4 affects-6.5 affects-6.6 component/statistics severity/major sig/planner SIG: Planner type/bug The issue is confirmed as a bug.

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@xuyifangreeneyes
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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Create many tables(> 1000) and collect their statistics. Observe the memory profiling result.

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

Index FMSketch would not be directly used by optimizer. Hence, we should not load it into memory.

3. What did you see instead (Required)

Index FMSketch takes up too much TiDB memory.

20230309-144711

4. What is your TiDB version? (Required)

v6.5.0(master also has the problem)
@xuyifangreeneyes xuyifangreeneyes added type/bug The issue is confirmed as a bug. sig/planner SIG: Planner component/statistics labels Mar 9, 2023
@xuyifangreeneyes xuyifangreeneyes mentioned this issue Mar 9, 2023
Merged
12 tasks
@ti-chi-bot ti-chi-bot added may-affects-4.0 This bug maybe affects 4.0.x versions. may-affects-5.0 This bug maybe affects 5.0.x versions. may-affects-5.1 This bug maybe affects 5.1.x versions. may-affects-5.2 This bug maybe affects 5.2.x versions. 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 labels Mar 9, 2023
@xuyifangreeneyes xuyifangreeneyes added affects-5.1 This bug affects 5.1.x versions. affects-5.2 This bug affects 5.2.x versions. affects-5.3 This bug affects 5.3.x versions. affects-5.4 This bug affects 5.4.x versions. affects-6.0 affects-6.1 affects-6.2 affects-6.3 affects-6.4 and removed may-affects-4.0 This bug maybe affects 4.0.x versions. may-affects-5.1 This bug maybe affects 5.1.x versions. may-affects-5.2 This bug maybe affects 5.2.x versions. 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-5.0 This bug maybe affects 5.0.x versions. may-affects-6.1 may-affects-6.5 labels Mar 9, 2023
ti-chi-bot pushed a commit that referenced this issue Mar 10, 2023
@xuyifangreeneyes
statistics: fix unnecessary index fmsketch loading (#42074)
cdab358 
close #42052
@xuyifangreeneyes
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/cherry-pick release-6.5

@ti-chi-bot ti-chi-bot mentioned this issue May 30, 2023
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12 tasks
@xuyifangreeneyes xuyifangreeneyes mentioned this issue Jun 1, 2023
Merged
12 tasks
ti-chi-bot bot pushed a commit that referenced this issue Jun 1, 2023
@xuyifangreeneyes
statistics: fix unnecessary index fmsketch loading (#44330)
cf696ae 
close #42052
This was referenced Jun 30, 2023
Merged
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ti-chi-bot bot pushed a commit that referenced this issue Jul 1, 2023
@ti-chi-bot
statistics: fix unnecessary index fmsketch loading (#42074) (#45083)
c71f045 
close #42052
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affects-5.1 This bug affects 5.1.x versions. affects-5.2 This bug affects 5.2.x versions. affects-5.3 This bug affects 5.3.x versions. affects-5.4 This bug affects 5.4.x versions. affects-6.0 affects-6.1 affects-6.2 affects-6.3 affects-6.4 affects-6.5 affects-6.6 component/statistics severity/major sig/planner SIG: Planner type/bug The issue is confirmed as a bug.
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statistics: fix unnecessary index fmsketch loading xuyifangreeneyes/tidb
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