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ttl gc or report metrics may introduce some unnecessary overhead #59357

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#59358
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ttl gc or report metrics may introduce some unnecessary overhead#59357
#59358
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affects-7.1This bug affects the 7.1.x(LTS) versions.affects-7.5This bug affects the 7.5.x(LTS) versions.affects-8.1This bug affects the 8.1.x(LTS) versions.affects-8.5This bug affects the 8.5.x(LTS) versions.severity/moderatesig/sql-infraSIG: SQL Infratype/bugThe issue is confirmed as a bug.
@lcwangchao

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@lcwangchao
lcwangchao
opened on Feb 10, 2025

JobManager.reportMetrics and JobManager.DoGC runs on every tidb node. If tidb has many nodes and there are many ttl tables, it may introduce some unnecessary overhead.

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    affects-7.1This bug affects the 7.1.x(LTS) versions.affects-7.5This bug affects the 7.5.x(LTS) versions.affects-8.1This bug affects the 8.1.x(LTS) versions.affects-8.5This bug affects the 8.5.x(LTS) versions.severity/moderatesig/sql-infraSIG: SQL Infratype/bugThe issue is confirmed as a bug.

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