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https://issues.apache.org/jira/browse/FLINK-5501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858423#comment-15858423
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Stephan Ewen commented on FLINK-5501:
-------------------------------------
I would actually go ahead with what you suggested originally and extend the
{{RunningJobsRegistry}} to support the different states "CREATED", "RUNNING",
"FINISHED".
I was only listing the other possible options for interested readers.
> Determine whether the job starts from last JobManager failure
> -------------------------------------------------------------
>
> Key: FLINK-5501
> URL: https://issues.apache.org/jira/browse/FLINK-5501
> Project: Flink
> Issue Type: Sub-task
> Components: JobManager
> Reporter: Zhijiang Wang
> Assignee: Zhijiang Wang
>
> When the {{JobManagerRunner}} grants leadership, it should check whether the
> current job is already running or not. If the job is running, the
> {{JobManager}} should reconcile itself (enter RECONCILING state) and waits
> for the {{TaskManager}} reporting task status. Otherwise the {{JobManger}}
> can schedule the {{ExecutionGraph}} in common way.
> The {{RunningJobsRegistry}} can provide the way to check the job running
> status, but we should expand the current interface and fix the related
> process to support this function.
> 1. {{RunningJobsRegistry}} sets RUNNING status after {{JobManagerRunner}}
> granting leadership at the first time.
> 2. If the job finishes, the job status will be set FINISHED by
> {{RunningJobsRegistry}} and the status will be deleted before exit.
> 3. If the mini cluster starts multi {{JobManagerRunner}}, and the leader
> {{JobManagerRunner}} already finishes the job to set the job status FINISHED,
> other {{JobManagerRunner}} will exit after grants the leadership again.
> 4. If the {{JobManager}} fails, the job status will be still in RUNNING. So
> if the {{JobManagerRunner}} (the previous or new one) grants leadership
> again, it will check the job status and enters {{RECONCILING}} state.
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