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Posted to issues@tajo.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2015/09/21 07:04:04 UTC
[jira] [Commented] (TAJO-1872) Increase the minimum split size and
add a classpath to hadoop tools
[ https://issues.apache.org/jira/browse/TAJO-1872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14900206#comment-14900206 ]
ASF GitHub Bot commented on TAJO-1872:
--------------------------------------
GitHub user jihoonson opened a pull request:
https://github.com/apache/tajo/pull/773
TAJO-1872: Increase the minimum split size and add a classpath to hadoop tools
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jihoonson/tajo-2 TAJO-1872
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/773.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 #773
----
commit ca735d69fc23ef3f8132d5fedd2aa718c1f46dc6
Author: Jihoon Son <ji...@apache.org>
Date: 2015-09-21T05:03:05Z
TAJO-1872
----
> Increase the minimum split size and add a classpath to hadoop tools
> -------------------------------------------------------------------
>
> Key: TAJO-1872
> URL: https://issues.apache.org/jira/browse/TAJO-1872
> Project: Tajo
> Issue Type: Task
> Components: conf and scripts
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Fix For: 0.11.0
>
>
> The current minimum split size is 1 byte. This can cause a wrong behaviour when the underlying file system gives the wrong block size.
> For example, s3a file system sometimes returns 0, so tajo creates a split for each byte as follows.
> {noformat}
> default> \d customer
> table name: default.customer
> table uri: s3a://id:key@tajo-data-sa-east-1/tpch-1g/customer/customer.tbl
> store type: TEXT
> number of rows: unknown
> volume: 24.3 MB
> ...
> 2015-09-21 12:42:37,806 INFO org.apache.tajo.storage.FileTablespace: Total # of splits: 24346144
> ...
> {noformat}
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