[jira] [Assigned] (FLINK-5499) Try to reuse the resource location of prior execution attempt in allocating slot

["Zhijiang Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-5499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhijiang Wang reassigned FLINK-5499:
------------------------------------

    Assignee: Zhijiang Wang

> 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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