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https://issues.apache.org/jira/browse/DRILL-6164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vlad Rozov updated DRILL-6164:
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Reviewer: Parth Chandra
> 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
>
> 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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