[jira] [Assigned] (HIVE-16879) Improve Cache Key

["BELUGA BEHR (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-16879?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

BELUGA BEHR reassigned HIVE-16879:
----------------------------------

    Assignee: BELUGA BEHR

> Improve Cache Key
> -----------------
>
>                 Key: HIVE-16879
>                 URL: https://issues.apache.org/jira/browse/HIVE-16879
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore
>    Affects Versions: 2.1.1, 3.0.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Trivial
>         Attachments: HIVE-16879.1.patch
>
>
> Improve cache key for cache implemented in {{org.apache.hadoop.hive.metastore.AggregateStatsCache}}.
> # Cache some of the key components themselves (db name, table name) using {{String}} intern method to conserve memory for repeated keys, to improve {{equals}} method as now references can be used for equality, and hashcodes will be cached as well as per {{String}} clash hashcode method.
> # Upgrade _debug_ logging to not generate text unless required
> # Changed _equals_ method to check first for the item most likely to be different, column name



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