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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7437) Storing block ids instead of BlockInfo object in INodeFile
Date Mon, 24 Nov 2014 22:24:15 GMT
Haohui Mai created HDFS-7437:
--------------------------------

             Summary: Storing block ids instead of BlockInfo object in INodeFile
                 Key: HDFS-7437
                 URL: https://issues.apache.org/jira/browse/HDFS-7437
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Haohui Mai
            Assignee: Haohui Mai


Currently {{INodeFile}} stores the lists of blocks as references of {{BlockInfo}} instead
of the block ids. This creates implicit dependency between the namespace and the block manager.

The dependency blocks several recent efforts, such as separating the block manager out as
a standalone service, moving block information off heap, and optimizing the memory usage of
block manager.

This jira proposes to decouple the dependency by storing block ids instead of object reference
in {{INodeFile}} objects.



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