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https://issues.apache.org/jira/browse/DRILL-6164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368290#comment-16368290
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ASF GitHub Bot commented on DRILL-6164:
---------------------------------------
Github user vrozov commented on the issue:
https://github.com/apache/drill/pull/1122
The functional test failure is fixed. Please merge.
> Heap memory leak during parquet scan and OOM
> --------------------------------------------
>
> Key: DRILL-6164
> URL: https://issues.apache.org/jira/browse/DRILL-6164
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Vlad Rozov
> Assignee: Vlad Rozov
> Priority: Major
> Labels: ready-to-commit
> Fix For: 1.13.0
>
>
> During a scan of a large set of parquet files, Drill iterates over the set
> initializing parquet readers. Such initialization may require a significant
> memory usage (both heap and direct). When scan moves to the next parquet file
> in the set, it does not remove reference to the reader from the set it
> iterates over and does not remove references created during initialization.
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