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https://issues.apache.org/jira/browse/SPARK-27647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-27647.
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Resolution: Invalid
> Metric Gauge not threadsafe
> ---------------------------
>
> Key: SPARK-27647
> URL: https://issues.apache.org/jira/browse/SPARK-27647
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.4.2
> Reporter: bettermouse
> Priority: Major
>
> when I read class DAGSchedulerSource,I find some Gauges may be not
> threadSafe.like
> metricRegistry.register(MetricRegistry.name("stage", "failedStages"), new
> Gauge[Int] {
> override def getValue: Int = dagScheduler.failedStages.size
> })
> this method may be called in other thread,but failedStages field is not
> thread safe
> filed runningStages,waitingStages have same problem
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