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Date: Tue, 25 May 2010 21:52:34 -0400 (EDT)
From: "Ramkumar Vadali (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Updated: (HDFS-1175) HAR files used for RAID parity need to
 have configurable partfile size
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     [ https://issues.apache.org/jira/browse/HDFS-1175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ramkumar Vadali updated HDFS-1175:
----------------------------------

    Attachment: HDFS-1175.patch

> 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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