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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4596) RESTART_STRATEGY is not really pluggable
Date Fri, 04 Nov 2016 13:16:58 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15636294#comment-15636294

ASF GitHub Bot commented on FLINK-4596:

Github user tillrohrmann commented on a diff in the pull request:

    --- Diff: flink-runtime/src/main/scala/org/apache/flink/runtime/jobmanager/JobManager.scala
    @@ -1114,7 +1114,8 @@ class JobManager(
    --- End diff --
    True, you're right because it would prevent the `StreamingJobGraphGenerator` from setting
the `FixedDelayRestartStrategy` in case that no other restarting strategy has been set.

> RESTART_STRATEGY is not really pluggable
> ----------------------------------------
>                 Key: FLINK-4596
>                 URL: https://issues.apache.org/jira/browse/FLINK-4596
>             Project: Flink
>          Issue Type: Wish
>          Components: Distributed Coordination
>    Affects Versions: 1.2.0
>            Reporter: Nagarjun Guraja
> Standalone cluster config accepts an implementation(class) as part of the yaml config
file but that does not work either as cluster level restart strategy or streaming job level
restart strategy
> CLUSTER LEVEL CAUSE: createRestartStrategyFactory converts configured value of strategyname
to lowercase and searches for class name using lowercased string.
> JOB LEVEL CAUSE: Checkpointed streams have specific code to add fixeddelayrestartconfiguration
if no RestartConfiguration is specified in  the job env. Also, jobs cannot provide their own
custom restart strategy implementation and are constrained to pick up one of the three restart
strategies provided by flink. 
> FIX: Do not lower case the strategy config value, support a new restartconfiguration
to fallback to cluster level restart strategy and support jobs to provide custom implementation
of the strategy class itself.

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