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https://issues.apache.org/jira/browse/FLINK-3800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344175#comment-15344175
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ASF GitHub Bot commented on FLINK-3800:
---------------------------------------
Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/2096#discussion_r68039809
--- Diff: docs/internals/job_scheduling.md ---
@@ -74,7 +74,28 @@ Besides the vertices, the ExecutionGraph also contains
the {% gh_link /flink-run
<img src="fig/job_and_execution_graph.svg" alt="JobGraph and
ExecutionGraph" height="400px" style="text-align: center;"/>
</div>
-During its execution, each parallel task goes through multiple stages,
from *created* to *finished* or *failed*. The diagram below illustrates the
+Each ExecutionGraph has a job status associated with it.
+This job status indicates the current state of the job execution.
+
+A Flink job is first in the *created* state, then switches to *running*
and upon completion of all work it switches to *finished*.
+In case of failures, a job switches first to *failing* where it cancels
all running tasks.
+If all job vertices have reached a final state and the job is not
restartable, then the job transitions to *failed*.
+If the job can be restarted, then it will enter the *restarting* state.
+Once the job has been completely restarted, it will reach the *created*
state.
+
+In case that the user cancels the job, it will go into the *cancelling*
state.
+This is also entails the cancellation of all currently running tasks.
--- End diff --
Typo: This **~~is~~** also entails...
> ExecutionGraphs can become orphans
> ----------------------------------
>
> Key: FLINK-3800
> URL: https://issues.apache.org/jira/browse/FLINK-3800
> Project: Flink
> Issue Type: Bug
> Components: JobManager
> Affects Versions: 1.0.0, 1.1.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
>
> The {{JobManager.cancelAndClearEverything}} method fails all currently
> executed jobs on the {{JobManager}} and then clears the list of
> {{currentJobs}} kept in the JobManager. This can become problematic if the
> user has set a restart strategy for a job, because the {{RestartStrategy}}
> will try to restart the job. This can lead to unwanted re-deployments of the
> job which consumes resources and thus will trouble the execution of other
> jobs. If the restart strategy never stops, then this prevents that the
> {{ExecutionGraph}} from ever being properly terminated.
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