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https://issues.apache.org/jira/browse/FLINK-5499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15851433#comment-15851433
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ASF GitHub Bot commented on FLINK-5499:
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Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/3125
> Try to reuse the resource location of prior execution attempt in allocating
> slot
> --------------------------------------------------------------------------------
>
> Key: FLINK-5499
> URL: https://issues.apache.org/jira/browse/FLINK-5499
> Project: Flink
> Issue Type: Improvement
> Components: JobManager
> Reporter: Zhijiang Wang
> Assignee: Zhijiang Wang
>
> Currently when schedule execution to request to allocate slot from
> {{SlotPool}}, the {{TaskManagerLocation}} parameter is empty collection. So
> for task fail over scenario, the new execution attempt may be deployed to
> different task managers. If setting rockDB as state backend, the performance
> is better if the data can be restored from local machine. So we try to reuse
> the {{TaskManagerLocation}} of prior execution attempt when allocating slot
> from {{SlotPool}}. If the {{TaskManagerLocation}} is empty from prior
> executions, the behavior is the same with current status.
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