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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1175) HAR files used for RAID parity need to have configurable partfile size
Date Wed, 26 May 2010 05:06:32 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

dhruba borthakur updated HDFS-1175:
-----------------------------------

        Status: Resolved  (was: Patch Available)
    Resolution: Invalid

HAR is part of the MAPREDUCE project. Please open a JIRA there https://issues.apache.org/jira/browse/MAPREDUCE
and then attach the patch to that JIRA. Thanks for doing this.

> 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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