[jira] [Assigned] (HIVE-21154) Investigate using object IDs in Acid HMS schema instead of names

["KIRTI RUGE (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-21154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

KIRTI RUGE reassigned HIVE-21154:
---------------------------------

    Assignee: KIRTI RUGE

> Investigate using object IDs in Acid HMS schema instead of names
> ----------------------------------------------------------------
>
>                 Key: HIVE-21154
>                 URL: https://issues.apache.org/jira/browse/HIVE-21154
>             Project: Hive
>          Issue Type: New Feature
>          Components: Transactions
>    Affects Versions: 1.0.0
>            Reporter: Eugene Koifman
>            Assignee: KIRTI RUGE
>            Priority: Major
>
> Currently all Acid related tables in HMS DB (HIVE_LOCKS, TXN_COMPONENTS, etc) use db_name/table_name/partition_name to identify the metastore object that is being tracked (these are potentially long strings, esp partition name.  It would improve perf to use object ID such as TBLS.TBL_ID which is exposed in Thrift since HIVE-20556.  It would also make handling object rename operations no-op (currently handled in {{TxnHandler.onRename()}} from {{AcidEventListener extends MetaStoreEventListener}}).  This would require significant HMS schema changes and surfacing the ID of Database/Partition objects.
> Need to think how this affects replication.



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