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https://issues.apache.org/jira/browse/SPARK-19779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15890188#comment-15890188
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Sean Owen commented on SPARK-19779:
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If it's a temp file and is only not deleted in a failure case is that really a
problem? tmp gets cleaned up eventually anyway.
> structured streaming exist residual tmp file
> ---------------------------------------------
>
> Key: SPARK-19779
> URL: https://issues.apache.org/jira/browse/SPARK-19779
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 2.1.0
> Reporter: Feng Gui
> Priority: Minor
>
> The PR (https://github.com/apache/spark/pull/17012) can to fix restart a
> Structured Streaming application using hdfs as fileSystem, but also exist a
> problem that a tmp file of delta file is still reserved in hdfs. And
> Structured Streaming don't delete the tmp file generated when restart
> streaming job in future, so we need to delete the tmp file after restart
> streaming job.
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