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https://issues.apache.org/jira/browse/SPARK-9063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14627858#comment-14627858
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Sean Owen commented on SPARK-9063:
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Eh, can you add more detail? why is 10000 a magic number?
> The UI and DynamicAllocation will be wrong when event number > 10000
> --------------------------------------------------------------------
>
> Key: SPARK-9063
> URL: https://issues.apache.org/jira/browse/SPARK-9063
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: meiyoula
>
> When the event number > 10000, the excess events will lost, and the
> listeners' information will be wrong. So it will cause the UI,
> HistoryEventLog and other information be wrong.
> What needs special attention is ExecutorAllocationListener, if the events
> lost, the dynamic function will be a problem and affects the following job
> process.
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