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https://issues.apache.org/jira/browse/SPARK-14678?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Armbrust resolved SPARK-14678.
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Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 12435
[https://github.com/apache/spark/pull/12435]
> Add a file sink log to support versioning and compaction
> --------------------------------------------------------
>
> Key: SPARK-14678
> URL: https://issues.apache.org/jira/browse/SPARK-14678
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Shixiong Zhu
> Assignee: Shixiong Zhu
> Fix For: 2.0.0
>
>
> To use FileStreamSink in production, there are two requirements for
> FileStreamSink's log:
> 1.Versioning. A future Spark version should be able to read the metadata of
> an old FileStreamSink.
> 2. Compaction. As reading from many small files is usually pretty slow, we
> should compact small metadata files into big files.
> See the PR description for more details.
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