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ticdc/metrics: fix processor checkpoint-ts lag expr (#3543) #3555

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This is an automated cherry-pick of #3543

What problem does this PR solve?

Fix a metric expr

It is not reasonable if all captures checkpoint lag is low, but the checkpoint lag of changefeed is large

image

What is changed and how it works?

Use correct metric expr

Check List

Tests

  • Manual test (add detailed scripts or steps below)
    After fix

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Release note

None

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[REVIEW NOTIFICATION]

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@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. do-not-merge/cherry-pick-not-approved labels Nov 22, 2021
@ti-chi-bot ti-chi-bot added component/metrics-logging Metrics and logging component. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. status/LGT2 Indicates that a PR has LGTM 2. type/cherry-pick-for-release-5.2 This PR is cherry-picked to release-5.2 from a source PR. labels Nov 22, 2021
@zhouqiang-cl zhouqiang-cl added the cherry-pick-approved Cherry pick PR approved by release team. label Nov 23, 2021
@amyangfei amyangfei added this to the v5.2.3 milestone Nov 23, 2021
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: 00d104c

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Nov 23, 2021
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/run-integration-test
/run-kafka-integration-test
/run-unit-test

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/run-integration-test
/run-unit-test

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/run-kafka-integration-test
/run-leak-test

@ti-chi-bot ti-chi-bot merged commit 96a119c into pingcap:release-5.2 Nov 23, 2021
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cherry-pick-approved Cherry pick PR approved by release team. component/metrics-logging Metrics and logging component. release-note-none Denotes a PR that doesn't merit a release note. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. status/can-merge Indicates a PR has been approved by a committer. status/LGT2 Indicates that a PR has LGTM 2. type/cherry-pick-for-release-5.2 This PR is cherry-picked to release-5.2 from a source PR.
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3 participants