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https://issues.apache.org/jira/browse/SPARK-49788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18035126#comment-18035126
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Holden Karau commented on SPARK-49788:
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[~abellina] so the TTL timer is based on the last access time, which includes
the initial write time.
> Add spark.cleaner.ttl functionality for long lived jobs
> -------------------------------------------------------
>
> Key: SPARK-49788
> URL: https://issues.apache.org/jira/browse/SPARK-49788
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 4.0.0
> Reporter: Holden Karau
> Assignee: Holden Karau
> Priority: Major
> Labels: pull-request-available
>
> We should add a TTL (and maybe a threshold?) to clean shuffle files which
> have been stored for greater than some fixed period of time. This would be
> useful for long lived jobs with Spark Connect and Notebooks where items may
> not go out-of-scope and be resident for longer than needed.
>
> See SPARK-7689 which removed the original TTL cleaner.
>
> To reduce the chance of confusion/difficulty to understand which was part of
> the original reason for removing the TTL based cleaner we should (instead of
> "raw" TTL) keep track of when it was accessed last to reset the counter + log
> on removal.
>
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