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From "Ashutosh Chauhan (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-23318) TxnHandler need not delete from MATERIALIZATION_REBUILD_LOCKS on need basis
Date Wed, 29 Apr 2020 18:53:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-23318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17095805#comment-17095805
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Ashutosh Chauhan commented on HIVE-23318:
-----------------------------------------

I am not sure I followed. Are you saying we can fix this by introducing new parameter in CommitTxnRequest
struct?

> TxnHandler need not delete from MATERIALIZATION_REBUILD_LOCKS on need basis
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-23318
>                 URL: https://issues.apache.org/jira/browse/HIVE-23318
>             Project: Hive
>          Issue Type: Improvement
>          Components: Hive, Materialized views
>            Reporter: Rajesh Balamohan
>            Priority: Minor
>
> Observed the following queries when materialized view or any of its feature was not used.

> TxnHandler need not clear this part of txn commit. It would help in reducing the sql
parsing time in server side as well.
> {noformat}
>   G....delete from MATERIALIZATION_REBUILD_LOCKS where mrl_txn_id = 120398082
>   G....delete from MATERIALIZATION_REBUILD_LOCKS where mrl_txn_id = 120398084
>   G....delete from MATERIALIZATION_REBUILD_LOCKS where mrl_txn_id = 120398112
> {noformat}



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