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From "Praveen Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-4056) Support for using faster storage for write-ahead log
Date Sat, 02 Jul 2011 00:35:28 GMT
Support for using faster storage for write-ahead log
----------------------------------------------------

                 Key: HBASE-4056
                 URL: https://issues.apache.org/jira/browse/HBASE-4056
             Project: HBase
          Issue Type: New Feature
            Reporter: Praveen Kumar
            Priority: Minor


On clusters with heterogeneous storage components like hard drives and flash memory, it could
be beneficial to use flash memory for write-ahead log. This can be accomplished by using client
side mount table support (HADOOP-7257) that is offered by HDFS federation (HDFS-1052) feature.
One can define two HDFS namespaces (faster and slower), and configure HBase to use faster
storage namespace for storing WAL.

This is an abstract task that captures the idea. More brainstorming and subtasks identification
to follow.

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