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infoschema: refine info cache logic to reduce the impact of DDL on information schema cache #48293
infoschema: refine info cache logic to reduce the impact of DDL on information schema cache #48293
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Signed-off-by: crazycs520 <[email protected]>
Signed-off-by: crazycs520 <[email protected]>
Hi @crazycs520. Thanks for your PR. PRs from untrusted users cannot be marked as trusted with I understand the commands that are listed here. Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. |
…formation schema cache (pingcap#48293) Signed-off-by: crazycs520 <[email protected]>
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LGTM
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Can also pick the comments from #48284
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: cfzjywxk, ekexium The full list of commands accepted by this bot can be found here. The pull request process is described here
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868456d
into
pingcap:tidb-6.5-with-kv-timeout-feature
…formation schema cache pingcap#48293 (pingcap#19) * refine info cache Signed-off-by: crazycs520 <[email protected]> * update Signed-off-by: crazycs520 <[email protected]> Signed-off-by: crazycs520 <[email protected]> Co-authored-by: crazycs520 <[email protected]>
cherry-pick #48284
What problem does this PR solve?
Issue Number: close #48285
Problem Summary: refine info cache logic to reduce the impact of DDL on information schema cache
What is changed and how it works?
Do same test in #48285, with this PR, the impact of
failed to get schema version
to stale read QPS is much smaller.The the related metric is following, as you can see, the QPS is much more stable and load snapshot ops is much lower.
Before This PR
Check List
Tests
Side effects
Documentation
Release note
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