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https://issues.apache.org/jira/browse/FLINK-1493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17328989#comment-17328989
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Flink Jira Bot commented on FLINK-1493:
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This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Support for streaming jobs preserving global ordering of records
> ----------------------------------------------------------------
>
> Key: FLINK-1493
> URL: https://issues.apache.org/jira/browse/FLINK-1493
> Project: Flink
> Issue Type: New Feature
> Components: API / DataStream
> Reporter: Márton Balassi
> Priority: Major
> Labels: stale-major
>
> Distributed streaming jobs do not give total, global ordering guarantees for
> records only partial ordering is provided by the system: records travelling
> on the same exact route of the physical plan are ordered, but they aren't
> between routes.
> It turns out that although this feature can only be implemented via "merge
> sorting" in the input buffers on a timestamp field thus creating substantial
> latency is still desired for a number of applications.
> Just a heads up for the implementation: the sorting introduces back pressure
> in the buffers and might cause deadlocks.
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