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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16893) move replication dump related work in semantic analysis phase to execution phase using a task
Date Wed, 30 Aug 2017 18:44:01 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16147805#comment-16147805
] 

ASF GitHub Bot commented on HIVE-16893:
---------------------------------------

Github user anishek closed the pull request at:

    https://github.com/apache/hive/pull/201


> move replication dump related work in semantic analysis phase to execution phase using
a task
> ---------------------------------------------------------------------------------------------
>
>                 Key: HIVE-16893
>                 URL: https://issues.apache.org/jira/browse/HIVE-16893
>             Project: Hive
>          Issue Type: Sub-task
>          Components: HiveServer2
>    Affects Versions: 3.0.0
>            Reporter: anishek
>            Assignee: anishek
>             Fix For: 3.0.0
>
>         Attachments: HIVE-16893.2.patch, HIVE-16893.3.patch, HIVE-16893.4.patch
>
>
> Since we run in to the possibility of creating a large number tasks during replication
bootstrap dump
> * we may not be able to hold all of them in memory for really large databases, which
might not hold true once we complete HIVE-16892
> * Also a compile time lock is taken such that only one query is run in this phase which
in replication bootstrap scenario is going to be a very long running task and hence moving
it to execution phase will limit the lock period in compile phase.



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