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https://issues.apache.org/jira/browse/FLINK-19601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen closed FLINK-19601.
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> Introduce sort-merge based blocking result partition SortMergeResultPartition
> and the corresponding subpartition reader
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-19601
> URL: https://issues.apache.org/jira/browse/FLINK-19601
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Network
> Affects Versions: 1.12.0
> Reporter: Yingjie Cao
> Priority: Major
> Fix For: 1.12.0
>
>
> SortMergeResultPartition appends all added records and events to a SortBuffer
> and after the SortBuffer is full, all data in the SortBuffer will be copied
> and spilled to a PartitionedFile in subpartition index order. Different from
> the hash-based blocking shuffle implementation, SortMergeResultPartition can
> write at most one file concurrently.
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