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https://issues.apache.org/jira/browse/AURORA-263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935778#comment-13935778
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Maxim Khutornenko commented on AURORA-263:
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https://reviews.apache.org/r/19243/
> Support a min guaranteed task history retention period
> ------------------------------------------------------
>
> Key: AURORA-263
> URL: https://issues.apache.org/jira/browse/AURORA-263
> Project: Aurora
> Issue Type: Task
> Components: Scheduler
> Reporter: Maxim Khutornenko
> Assignee: Maxim Khutornenko
>
> Task history currently does not deliver any retention guarantees beyond a max
> of 100 tasks per job over at most 2 days (whichever comes first). This makes
> any immediate event processing (i.e. SLA monitoring) impossible under heavy
> turn over.
> Have the HistoryPrunner support a min configurable retention period (e.g. 2
> minutes) to mitigate the above problem. The risk of overloading mem store is
> minimal due to throttling of flapping tasks.
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