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From Ismaël Mejía (JIRA) <j...@apache.org>
Subject [jira] [Commented] (BEAM-2393) BoundedSource is not fault-tolerant in FlinkRunner Streaming mode
Date Wed, 28 Jun 2017 06:12:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-2393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065970#comment-16065970
] 

Ismaël Mejía commented on BEAM-2393:
------------------------------------

[~lzljs3620320] Does this imply that as a side effect of this JIRA Flink runner will implement
Dynamic Work Rebalancing? (if so this would be great).
Other issue is the fact that at this moment there is not a single IO that implements splitAtFraction
(apart of the google ones) so this approach could be also not that useful.
[~aljoscha] is there a way to expand BoundedSource for this? maybe we can bring this subject
to the mailing list too, since this seems super important, and partially related to the drain/update
proposal no?

> BoundedSource is not fault-tolerant in FlinkRunner Streaming mode
> -----------------------------------------------------------------
>
>                 Key: BEAM-2393
>                 URL: https://issues.apache.org/jira/browse/BEAM-2393
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-flink
>            Reporter: Jingsong Lee
>            Assignee: Jingsong Lee
>
> {{BoundedSourceWrapper}} does not implement snapshot() and restore(), when the failure
to restart, it will send duplicate data.



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