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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8423) Allow Major Compaction to Use Different Compression
Date Wed, 24 Apr 2013 22:11:15 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nicolas Spiegelberg updated HBASE-8423:
---------------------------------------

    Description: For the Messages use case, ~90% of the disk util is associated with major
compacted files but less than 33% of the get IOPS are due to mc files.  Allowing a different
compaction algorithm for major compacted files will allow us to get ~30% disk savings.  Latency
should be higher, but storefile querying is sequential, so only 1/3 of the get latency is
from disk access to these files.
       Priority: Minor  (was: Major)
         Labels: compaction regionserver  (was: )
    
> Allow Major Compaction to Use Different Compression
> ---------------------------------------------------
>
>                 Key: HBASE-8423
>                 URL: https://issues.apache.org/jira/browse/HBASE-8423
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Nicolas Spiegelberg
>            Priority: Minor
>              Labels: compaction, regionserver
>
> For the Messages use case, ~90% of the disk util is associated with major compacted files
but less than 33% of the get IOPS are due to mc files.  Allowing a different compaction algorithm
for major compacted files will allow us to get ~30% disk savings.  Latency should be higher,
but storefile querying is sequential, so only 1/3 of the get latency is from disk access to
these files.

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