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https://issues.apache.org/jira/browse/BEAM-1438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17224164#comment-17224164
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Beam JIRA Bot commented on BEAM-1438:
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This issue was marked "stale-P2" and has not received a public comment in 14
days. It is now automatically moved to P3. If you are still affected by it, you
can comment and move it back to P2.
> The default behavior for the Write transform doesn't work well with the
> Dataflow streaming runner
> -------------------------------------------------------------------------------------------------
>
> Key: BEAM-1438
> URL: https://issues.apache.org/jira/browse/BEAM-1438
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Reuven Lax
> Priority: P3
> Fix For: 2.5.0
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> If a Write specifies 0 output shards, that implies the runner should pick an
> appropriate sharding. The default behavior is to write one shard per input
> bundle. This works well with the Dataflow batch runner, but not with the
> streaming runner which produces large numbers of small bundles.
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