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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/11/24 08:45:00 UTC

[jira] [Updated] (HIVE-24415) HiveSplitGenerator blocks Tez dispatcher

     [ https://issues.apache.org/jira/browse/HIVE-24415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HIVE-24415:
----------------------------------
    Labels: pull-request-available  (was: )

> HiveSplitGenerator blocks Tez dispatcher
> ----------------------------------------
>
>                 Key: HIVE-24415
>                 URL: https://issues.apache.org/jira/browse/HIVE-24415
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Mustafa İman
>            Assignee: Mustafa İman
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> HiveSplitGenerator does a lot of heavyweight operations in its constructor. These operations block AsyncDispatcher in Tez [https://github.com/apache/tez/blob/989d286d09cac7c4e4c5a0e06dd75ea5a6f15478/tez-dag/src/main/java/org/apache/tez/dag/app/dag/RootInputInitializerManager.java#L141] . We should move bulk of initialization out of constructor.
> The only reason of setting up everything in constructor is DynamicPartitionPruner. We can buffer incoming events in HiveSplitGenerator until dynamic partition pruner is initialized.



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