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[Enhancement] Improve observability of TiCDC lag #10675

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#10596
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[Enhancement] Improve observability of TiCDC lag#10675
#10596
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affects-6.5This bug affects the 6.5.x(LTS) versions.affects-7.1This bug affects the 7.1.x(LTS) versions.affects-7.5This bug affects the 7.5.x(LTS) versions.area/ticdcIssues or PRs related to TiCDC.type/enhancementThe issue or PR belongs to an enhancement.
@lidezhu

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@lidezhu
lidezhu
opened on Feb 29, 2024

Need to improve observability of TiCDC lag in the following aspects:

  1. Per event histogram metrics calculated by (TS after flushing to downstream - event TSO)

  2. More fine grained bucketing for lag metrics. Currently the bucketing after 20 s is very coarse grained (https://github.com/pingcap/tiflow/blob/master/cdc/owner/metrics.go#L162).

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    affects-6.5This bug affects the 6.5.x(LTS) versions.affects-7.1This bug affects the 7.1.x(LTS) versions.affects-7.5This bug affects the 7.5.x(LTS) versions.area/ticdcIssues or PRs related to TiCDC.type/enhancementThe issue or PR belongs to an enhancement.

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