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Runtime info cause OOM when the cop task num is large #39413

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wshwsh12 opened this issue Nov 28, 2022 · 0 comments · Fixed by #39394
Closed

Runtime info cause OOM when the cop task num is large #39413

wshwsh12 opened this issue Nov 28, 2022 · 0 comments · Fixed by #39394
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affects-4.0 This bug affects 4.0.x versions. affects-5.0 This bug affects 5.0.x versions. 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 severity/major sig/execution SIG execution type/bug The issue is confirmed as a bug.

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@wshwsh12
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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Run a sql with many cop task(more than 10000000 cop tasks), and then TiDB OOM

Profile: Heap in Use
image
and
image

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

Runtime info doesn't use too many memory.

3. What did you see instead (Required)

OOM

4. What is your TiDB version? (Required)

master
@wshwsh12 wshwsh12 added type/bug The issue is confirmed as a bug. severity/major labels Nov 28, 2022
@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-6.0 may-affects-6.1 may-affects-6.2 may-affects-6.3 may-affects-6.4 labels Nov 28, 2022
@wshwsh12 wshwsh12 mentioned this issue Nov 28, 2022
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@wshwsh12 wshwsh12 added affects-4.0 This bug affects 4.0.x versions. affects-5.0 This bug affects 5.0.x versions. 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. labels Nov 28, 2022
@ti-chi-bot ti-chi-bot removed 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-4.0 This bug maybe affects 4.0.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. labels Nov 28, 2022
ti-chi-bot pushed a commit that referenced this issue Nov 29, 2022
@wshwsh12
*: merge the runtime stats in time to avoid using too many memory (#3…
23543a4 
…9394)

close #39413
This was referenced Nov 29, 2022
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@jebter jebter added the sig/execution SIG execution label Jan 18, 2023
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affects-4.0 This bug affects 4.0.x versions. affects-5.0 This bug affects 5.0.x versions. 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 severity/major sig/execution SIG execution type/bug The issue is confirmed as a bug.
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*: merge the runtime stats in time to avoid using too many memory wshwsh12/tidb
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