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Posted to issues@hive.apache.org by "Mustafa İman (Jira)" <ji...@apache.org> on 2020/11/24 05:05:00 UTC
[jira] [Assigned] (HIVE-24415) HiveSplitGenerator blocks Tez
dispatcher
[ https://issues.apache.org/jira/browse/HIVE-24415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mustafa İman reassigned HIVE-24415:
-----------------------------------
> 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
>
> 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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