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https://issues.apache.org/jira/browse/SPARK-32898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17197341#comment-17197341
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wuyi commented on SPARK-32898:
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I think the issue is(for executorRunTimeMs): Before a task reaches to
"taskStartTimeNs = System.nanoTime()", it might be already killed(e.g., by
another successful attempt). So, taskStartTimeNs can not get initialized and
remains 0. However, the executorRunTimeMs is calculated by "System.nanoTime() -
taskStartTimeNs" in collectAccumulatorsAndResetStatusOnFailure, which is
obviously a wrong big result when taskStartTimeNs = 0.
I haven't taken a detail look for the submissionTime, but it sounds like it's a
different issue? Though, it may be due to the same logic hole.
I'd like to make a fix for the executorRunTimeMs first if [~linhongliu-db]
doesn't mind.
> totalExecutorRunTimeMs is too big
> ---------------------------------
>
> Key: SPARK-32898
> URL: https://issues.apache.org/jira/browse/SPARK-32898
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.0.1
> Reporter: Linhong Liu
> Priority: Major
>
> This might be because of incorrectly calculating executorRunTimeMs in
> Executor.scala
> The function collectAccumulatorsAndResetStatusOnFailure(taskStartTimeNs) can
> be called when taskStartTimeNs is not set yet (it is 0).
> As of now in master branch, here is the problematic code:
> [https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/executor/Executor.scala#L470]
>
> There is a throw exception before this line. The catch branch still updates
> the metric.
> However the query shows as SUCCESSful. Maybe this task is speculative. Not
> sure.
>
> submissionTime in LiveExecutionData may also have similar problem.
> [https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/ui/SQLAppStatusListener.scala#L449]
>
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