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https://issues.apache.org/jira/browse/HIVE-15665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168804#comment-16168804
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Lefty Leverenz commented on HIVE-15665:
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Doc note: This removes the deprecated configuration parameter
*hive.llap.io.metadata.fraction*, which was introduced by HIVE-16318 in release
2.2.0 and is not documented in the wiki yet. It still needs to be documented,
with version information.
* [Configuration Properties -- LLAP I/O |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-LLAPI/O]
Added a TODOC3.0 label.
> LLAP: OrcFileMetadata objects in cache can impact heap usage
> ------------------------------------------------------------
>
> Key: HIVE-15665
> URL: https://issues.apache.org/jira/browse/HIVE-15665
> Project: Hive
> Issue Type: Improvement
> Components: llap
> Reporter: Rajesh Balamohan
> Assignee: Sergey Shelukhin
> Labels: TODOC3.0
> Fix For: 3.0.0
>
> Attachments: HIVE-15665.01.patch, HIVE-15665.02.patch,
> HIVE-15665.03.patch, HIVE-15665.04.patch, HIVE-15665.05.patch,
> HIVE-15665.06.patch, HIVE-15665.07.patch, HIVE-15665.08.patch,
> HIVE-15665.09.patch, HIVE-15665.10.patch, HIVE-15665.11.patch,
> HIVE-15665.12.patch, HIVE-15665.patch
>
>
> OrcFileMetadata internally has filestats, stripestats etc which are allocated
> in heap. On large data sets, this could have an impact on the heap usage and
> the memory usage by different executors in LLAP.
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