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https://issues.apache.org/jira/browse/SPARK-24386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16511994#comment-16511994
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Apache Spark commented on SPARK-24386:
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User 'jose-torres' has created a pull request for this issue:
https://github.com/apache/spark/pull/21560
> implement continuous processing coalesce(1)
> -------------------------------------------
>
> Key: SPARK-24386
> URL: https://issues.apache.org/jira/browse/SPARK-24386
> Project: Spark
> Issue Type: Sub-task
> Components: Structured Streaming
> Affects Versions: 2.4.0
> Reporter: Jose Torres
> Priority: Major
>
> [~marmbrus] suggested this as a good implementation checkpoint. If we do the
> shuffle reader and writer correctly, it should be easy to make a custom
> coalesce(1) execution for continuous processing using them, without having to
> implement the logic for shuffle writers finding out where shuffle readers are
> located. (The coalesce(1) can just get the RpcEndpointRef directly from the
> reader and pass it to the writers.)
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