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https://issues.apache.org/jira/browse/FLINK-19297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yingjie Cao closed FLINK-19297.
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Resolution: Fixed
> Make ResultPartitionWriter record-oriented
> ------------------------------------------
>
> Key: FLINK-19297
> URL: https://issues.apache.org/jira/browse/FLINK-19297
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Network
> Affects Versions: 1.12.0
> Reporter: Yingjie Cao
> Assignee: Yingjie Cao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0
>
>
> Currently, ResultPartitionWriter is buffer-oriented, that is, RecordWriter
> will add buffer of different channels to ResultPartitionWriter and the buffer
> boundary serves as a nature boundary of data belonging to different channels.
> However, this abstraction is not flexible enough to handle some cases where
> records are appended a joint-structure shared by all channels and sorting is
> used to cluster data belonging to different channels.
> In this ticket, we propose to make ResultPartitionWriter record oriented
> which offers more flexibility to the implementation of ResultPartitionWriter.
> And based on the new record-oriented Interface, we will introduce the
> sort-merge based blocking shuffle to Flink in the future.
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