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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/06/05 00:31:00 UTC
[jira] [Work logged] (HIVE-23596) LLAP: Encode initial guaranteed
task information in containerId
[ https://issues.apache.org/jira/browse/HIVE-23596?focusedWorklogId=441608&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-441608 ]
ASF GitHub Bot logged work on HIVE-23596:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Jun/20 00:30
Start Date: 05/Jun/20 00:30
Worklog Time Spent: 10m
Work Description: mustafaiman closed pull request #1053:
URL: https://github.com/apache/hive/pull/1053
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Issue Time Tracking
-------------------
Worklog Id: (was: 441608)
Time Spent: 20m (was: 10m)
> LLAP: Encode initial guaranteed task information in containerId
> ---------------------------------------------------------------
>
> Key: HIVE-23596
> URL: https://issues.apache.org/jira/browse/HIVE-23596
> Project: Hive
> Issue Type: Improvement
> Components: llap
> Reporter: Mustafa Iman
> Assignee: Mustafa Iman
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> We should avoid calling LlapTaskScheduler to get initial isguaranteed flag for all the tasks. It causes arbitrary delays in sending tasks out. Since communicator is a single thread, any blocking there delays all the tasks.
> There are [https://jira.apache.org/jira/browse/TEZ-4192] and [https://jira.apache.org/jira/browse/HIVE-23589] for a proper solution to this. However, that requires a Tez release which seems far right now. We can replace the current hack with another hack that does not require locking.
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