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https://issues.apache.org/jira/browse/BEAM-2393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16405185#comment-16405185
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Aljoscha Krettek commented on BEAM-2393:
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Yes, it's very good to worry about those things! 👍
I would say that's it's ok, because I don't see how else we could do this
currently.
> 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: Grzegorz Kołakowski
> Priority: Major
>
> {{BoundedSourceWrapper}} does not implement snapshot() and restore(), when
> the failure to restart, it will send duplicate data.
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