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Posted to issues@hive.apache.org by "anishek (JIRA)" <ji...@apache.org> on 2017/06/21 04:46:00 UTC
[jira] [Work started] (HIVE-16893) move replication dump related
work in semantic analysis phase to execution phase using a task
[ https://issues.apache.org/jira/browse/HIVE-16893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HIVE-16893 started by anishek.
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> 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
>
>
> 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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