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https://issues.apache.org/jira/browse/SPARK-17604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim updated SPARK-17604:
---------------------------------
    Comment: was deleted

(was: The issue is even reported from user group, refer here: 

https://lists.apache.org/thread.html/r897771f5526d10d0b13da9177a6b7d2e378888b22823c839cceea457%40%3Cuser.spark.apache.org%3E

(moved from the PR description))

> Support purging aged file entry for FileStreamSource metadata log
> -----------------------------------------------------------------
>
>                 Key: SPARK-17604
>                 URL: https://issues.apache.org/jira/browse/SPARK-17604
>             Project: Spark
>          Issue Type: New Feature
>          Components: Structured Streaming
>    Affects Versions: 3.1.0
>            Reporter: Saisai Shao
>            Priority: Major
>
> Currently with SPARK-15698, FileStreamSource metadata log will be compacted 
> periodically (10 batches by default), this means compacted batch file will 
> contain whole file entries been processed. With the time passed, the 
> compacted batch file will be accumulated to a relative large file. 
> With SPARK-17165, now {{FileStreamSource}} doesn't track the aged file entry, 
> but in the log we still keep the full records,  this is not necessary and 
> quite time-consuming during recovery. So here propose to also add file entry 
> purging ability to {{FileStreamSource}} metadata log.
> This is pending on SPARK-15698.



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