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https://issues.apache.org/jira/browse/SPARK-30804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-30804:
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Affects Version/s: (was: 3.0.0)
3.1.0
> Measure and log elapsed time for "compact" operation in
> CompactibleFileStreamLog
> --------------------------------------------------------------------------------
>
> Key: SPARK-30804
> URL: https://issues.apache.org/jira/browse/SPARK-30804
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 3.1.0
> Reporter: Jungtaek Lim
> Priority: Major
>
> "compact" operation in FileStreamSourceLog and FileStreamSinkLog is
> introduced to solve "small files" problem, but introduced non-trivial latency
> which is another headache in long run query.
> There're bunch of reports from community for the same issue (see SPARK-24295,
> SPARK-29995, SPARK-30462) - before trying to solve the problem, it would be
> better to measure the latency (elapsed time) and log to help indicating the
> issue when the additional latency becomes concerns.
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