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https://issues.apache.org/jira/browse/DRILL-2100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270384#comment-15270384
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Vitalii Diravka commented on DRILL-2100:
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[~jaltekruse] Not certainly in that way.
Spill directories will delete immediately after success, failed or canceled
query due to fs.delete() in the close() method of ExternalSortBatch.java (also
spill directories will be deleted from deleteOnExit set). It can work without
using fs.deleteOnExit().
What about fs.deleteOnExit() I use it to delete temporary spill folders for the
case when drillbit process is killed.
> Drill not deleting spooling files
> ---------------------------------
>
> Key: DRILL-2100
> URL: https://issues.apache.org/jira/browse/DRILL-2100
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 0.8.0
> Reporter: Abhishek Girish
> Assignee: Deneche A. Hakim
> Fix For: 1.7.0
>
>
> Currently, after forcing queries to use an external sort by switching off
> hash join/agg causes spill-to-disk files accumulating.
> This causes issues with disk space availability when the spill is configured
> to be on the local file system (/tmp/drill). Also not optimal when configured
> to use DFS (custom).
> Drill must clean up all temporary files created after a query completes or
> after a drillbit restart.
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