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https://issues.apache.org/jira/browse/TAJO-1696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14636141#comment-14636141
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ASF GitHub Bot commented on TAJO-1696:
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GitHub user jihoonson opened a pull request:
https://github.com/apache/tajo/pull/640
TAJO-1696: Resource calculator should consider the requested disk resource
at the first stage
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jihoonson/tajo-2 TAJO-1696
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/640.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #640
----
commit e231945aebb7c3302fa8b4af4934da21de46a999
Author: Jihoon Son <[email protected]>
Date: 2015-07-22T02:47:26Z
TAJO-1696
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> Resource calculator should consider the requested disk resource at the first
> stage
> ----------------------------------------------------------------------------------
>
> Key: TAJO-1696
> URL: https://issues.apache.org/jira/browse/TAJO-1696
> Project: Tajo
> Issue Type: Improvement
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Fix For: 0.11.0
>
>
> Resource calculator currently considers only cpu and memory. However, disk is
> an important resource in the first stage, so should be considered for
> available resource calculation.
> In addition, in the current implementation, a worker sends a heartbeat
> whenever it finishes processing half of the assigned tasks. So, the problem
> of ignoring disk resource makes the first heartbeat delayed during the first
> stage, thereby making the query execution slow.
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