[jira] [Reopened] (HIVE-17669) Cache to optimize SearchArgument deserialization

["Mithun Radhakrishnan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-17669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mithun Radhakrishnan reopened HIVE-17669:
-----------------------------------------

Thank you for the heads-up, [~vihangk1]. 

I had a non-lambda version of this patch queued up for {{branch-2}}. I'll revert this commit, and check that version in, very shortly.

> 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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