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https://issues.apache.org/jira/browse/FLINK-17564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhijiang reassigned FLINK-17564:
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Assignee: Yingjie Cao
> Inflight data of incoming channel may be disordered for unaligned checkpoint
> ----------------------------------------------------------------------------
>
> Key: FLINK-17564
> URL: https://issues.apache.org/jira/browse/FLINK-17564
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.11.0
> Reporter: Yingjie Cao
> Assignee: Yingjie Cao
> Priority: Major
> Fix For: 1.11.0
>
>
> For unaligned checkpoint, when checkpointing the inflight data of incoming
> channel, both task thread and Netty thread may add data to the channel state
> writer. More specifically, the task thread will first request inflight
> buffers from the input channel and add the buffers to the channel state
> writer, and then the Netty thread will add the following up buffers (if any)
> to the channel state writer. The buffer adding of task thread and Netty
> thread is not synchronized so the Netty thread may add buffers before the
> task thread which leads to disorder of the data and corruption of the data
> stream.
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