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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1175) HAR files used for RAID parity need to have configurable partfile size
Date Wed, 26 May 2010 02:06:32 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12871476#action_12871476

Hadoop QA commented on HDFS-1175:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 948260.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 patch.  The patch command could not apply the patch.

Console output: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h5.grid.sp2.yahoo.net/378/console

This message is automatically generated.

> HAR files used for RAID parity need to have configurable partfile size
> ----------------------------------------------------------------------
>                 Key: HDFS-1175
>                 URL: https://issues.apache.org/jira/browse/HDFS-1175
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: contrib/raid
>    Affects Versions: 0.20.1
>            Reporter: Ramkumar Vadali
>            Priority: Minor
>         Attachments: HDFS-1175.patch
> RAID parity files are merged into HAR archives periodically. This is required to reduce
the number of files that the NameNode has to track. The number of files present in a HAR archive
depends on the size of HAR part files - higher the size, lower the number of files.
> The size of HAR part files is configurable through the setting har.partfile.size, but
that is a global setting. This task introduces a new setting specific to raid.har.partfile.size,
that is used in-turn to set har.partfile.size

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