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https://issues.apache.org/jira/browse/FLINK-7936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu resolved FLINK-7936.
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Resolution: Not A Problem
Should not be a problem after refactor.
> Lack of synchronization w.r.t. taskManagers in MetricStore#add()
> ----------------------------------------------------------------
>
> Key: FLINK-7936
> URL: https://issues.apache.org/jira/browse/FLINK-7936
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Reporter: Ted Yu
> Priority: Minor
>
> {code}
> String tmID = ((QueryScopeInfo.TaskManagerQueryScopeInfo)
> info).taskManagerID;
> tm = taskManagers.computeIfAbsent(tmID, k -> new
> TaskManagerMetricStore());
> {code}
> In other places, access to taskManagers is protected by lock on
> MetricStore.this
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