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https://issues.apache.org/jira/browse/SPARK-21252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-21252.
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Resolution: Incomplete
> The duration times showed by spark web UI are inaccurate
> --------------------------------------------------------
>
> Key: SPARK-21252
> URL: https://issues.apache.org/jira/browse/SPARK-21252
> Project: Spark
> Issue Type: Improvement
> Components: Web UI
> Affects Versions: 2.0.0, 2.0.1, 2.1.0, 2.1.1
> Reporter: igor mazor
> Priority: Minor
> Labels: bulk-closed
>
> The duration times showed by spark UI are inaccurate and seems to be rounded.
> For example when a job had 2 stages, first stage executed in 47 ms and second
> stage in 3 seconds, the total execution time showed by the UI is 4 seconds.
> Another example, first stage was executed in 20 ms and second stage in 4
> seconds, the total execution time showed by the UI would be in that case also
> 4 seconds.
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