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From "Ramkumar Vadali (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1175) HAR files used for RAID parity need to have configurable partfile size
Date Wed, 26 May 2010 01:34:34 GMT
HAR files used for RAID parity need to have configurable partfile size
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                 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


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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