hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gunther Hagleitner (JIRA)" <>
Subject [jira] [Updated] (HIVE-8042) Optionally allow move tasks to run in parallel
Date Wed, 10 Sep 2014 21:10:34 GMT


Gunther Hagleitner updated HIVE-8042:
    Attachment: HIVE-8042.2.patch

.2 removes config var

> Optionally allow move tasks to run in parallel
> ----------------------------------------------
>                 Key: HIVE-8042
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Gunther Hagleitner
>            Assignee: Gunther Hagleitner
>         Attachments: HIVE-8042.1.patch, HIVE-8042.2.patch
> hive.exec.parallel allows one to run different stages of a query in parallel. However
that applies only to map-reduce tasks. When using large multi insert queries there are many
MoveTasks that are all executed in sequence on the client. There's no real reason for that
- they could be run in parallel as well (i.e.: the stage graph captures the dependencies and
knows which tasks can happen in parallel)
> Proposal here is to create a new config var:
> hive.exec.parallel.movetask
> When set to true it run movetasks in parallel also.

This message was sent by Atlassian JIRA

View raw message