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https://issues.apache.org/jira/browse/HIVE-19041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16469680#comment-16469680
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Vihang Karajgaonkar commented on HIVE-19041:
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Talked with [~stakiar] offline. Removed {{AddPartitionsRequest}},
{{DropPartitionsRequest}}, {{AddDynamicPartitionsRequest}} and
{{PartitionsStatsRequest}} from the patch since these are request objects and
it is very unlikely that duplicate strings from these objects overwhelm the
heap. The {{Partition}} list in these objects will however will interned
because of the changes to Partition class from this patch.
> Thrift deserialization of Partition objects should intern fields
> ----------------------------------------------------------------
>
> Key: HIVE-19041
> URL: https://issues.apache.org/jira/browse/HIVE-19041
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Affects Versions: 3.0.0, 2.3.2
> Reporter: Vihang Karajgaonkar
> Assignee: Vihang Karajgaonkar
> Priority: Major
> Attachments: HIVE-19041.01.patch, HIVE-19041.02.patch,
> HIVE-19041.03.patch, HIVE-19041.04.patch
>
>
> When a client is creating large number of partitions, the thrift objects are
> deserialized into Partition objects. The read method of these objects does
> not intern the inputformat, location, outputformat which cause large number
> of duplicate Strings in the HMS memory. We should intern these objects while
> deserialization to reduce memory pressure.
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