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https://issues.apache.org/jira/browse/SPARK-17406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-17406.
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Resolution: Fixed
Fix Version/s: 2.1.0
Issue resolved by pull request 14969
[https://github.com/apache/spark/pull/14969]
> Event Timeline will be very slow when there are too many executor events
> ------------------------------------------------------------------------
>
> Key: SPARK-17406
> URL: https://issues.apache.org/jira/browse/SPARK-17406
> Project: Spark
> Issue Type: Improvement
> Components: Web UI
> Affects Versions: 1.6.2, 2.0.0
> Reporter: cen yuhai
> Priority: Minor
> Fix For: 2.1.0
>
> Attachments: timeline1.png, timeline2.png
>
>
> The job page will be too slow to open when there are thousands of executor
> events(added or removed). I found that in ExecutorsTab file, executorIdToData
> will not remove elements, it will increase all the time. Before this pr, it
> looks like timeline1.png. After this pr, it looks like timeline2.png(we can
> set how many events will be displayed)
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