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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-10319) Avoid requestPartitionState from JM but always try retrigger
Date Wed, 12 Sep 2018 08:42:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16611764#comment-16611764

ASF GitHub Bot commented on FLINK-10319:

Clarkkkkk commented on issue #6680: [FLINK-10319] [runtime] Avoid requestPartitionState from
JM but alway…
URL: https://github.com/apache/flink/pull/6680#issuecomment-420563206
   Hi @TisonKun , I am not sure if it fails the execution too eagerly? I think the too problem
that many RPC requests and block JM can be resolved by add a single-thread thread pool so
that only one request would be issued at the same time. What do you think?

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> Avoid requestPartitionState from JM but always try retrigger
> ------------------------------------------------------------
>                 Key: FLINK-10319
>                 URL: https://issues.apache.org/jira/browse/FLINK-10319
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination
>    Affects Versions: 1.7.0
>            Reporter: 陈梓立
>            Assignee: 陈梓立
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.7.0
> Do not requestPartitionState from JM on partition request fail, which may generate too
many RPC requests and block JM.
> We gain little benefit to check what state producer is in, which in the other hand crash
JM by too many RPC requests. Task could always retriggerPartitionRequest from its InputGate,
it would be fail if the producer has gone and succeed if the producer alive. Anyway, no need
to ask for JM for help.

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