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https://issues.apache.org/jira/browse/HIVE-17669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16201174#comment-16201174
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Prasanth Jayachandran commented on HIVE-17669:
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[~mithun] I did not pull this into branch-2.2 as this is perf optimization and
not bug fix. Do you want to revert the patch from branch-2.2 or commit the
patch to branch-2.3 as well to sync the branches? I am fine with either.
> Cache to optimize SearchArgument deserialization
> ------------------------------------------------
>
> Key: HIVE-17669
> URL: https://issues.apache.org/jira/browse/HIVE-17669
> Project: Hive
> Issue Type: Improvement
> Components: ORC, Query Processor
> Affects Versions: 2.2.0, 3.0.0
> Reporter: Mithun Radhakrishnan
> Assignee: Mithun Radhakrishnan
> Fix For: 3.0.0, 2.4.0
>
> Attachments: HIVE-17669.3.patch, HIVE-17669.4.patch,
> HIVE-17699.1.patch, HIVE-17699.2.patch
>
>
> And another, from [~selinazh] and [~cdrome]. (YHIVE-927)
> When a mapper needs to process multiple ORC files, it might land up having
> use essentially the same {{SearchArgument}} over several files. It would be
> good not to have to deserialize from string, over and over again. Caching the
> object against the string-form should speed things up.
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