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https://issues.apache.org/jira/browse/HIVE-23144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17076487#comment-17076487
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László Bodor commented on HIVE-23144:
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cc: [~ashutoshc]
> LLAP: Let QueryTracker cleanup on serviceStop
> ---------------------------------------------
>
> Key: HIVE-23144
> URL: https://issues.apache.org/jira/browse/HIVE-23144
> Project: Hive
> Issue Type: Bug
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Attachments: HIVE-23144.01.patch
>
>
> QueryTracker's executor service basically runs cleanup tasks:
> ExternalQueryCleanerCallable, DagMapCleanerCallable,
> FileCleanerCallable...changing the shutdown behavior to
> [.shutdown()|https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ExecutorService.html#shutdown--]
> from
> [.shutdownNow()|https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ExecutorService.html#shutdownNow--]
> would let QueryTracker to cleanup it's garbage, for example shuffle local
> files:
> https://github.com/apache/hive/blob/c3ec20dd4f5b5fbde4007041844f6aed8c262ca1/llap-server/src/java/org/apache/hadoop/hive/llap/daemon/impl/QueryTracker.java#L440
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