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https://issues.apache.org/jira/browse/HIVE-19041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16462473#comment-16462473
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Sahil Takiar edited comment on HIVE-19041 at 5/3/18 1:54 PM:
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I think this applies to almost every Thrift class where we do string interning:
{{SerDeInfo}}, {{StorageDescriptor}}, {{FieldSchema}}, {{Partition}}.
was (Author: stakiar):
I think this applies to almost every Thrift class where we do, {{SerDeInfo}},
{{StorageDescriptor}}, {{FieldSchema}}, {{Partition}}.
> 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
>
> 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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