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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5704) Change OP_UPDATE_BLOCKS with a new OP_ADD_BLOCK
Date Sun, 29 Dec 2013 07:35:51 GMT
Suresh Srinivas created HDFS-5704:
-------------------------------------

             Summary: Change OP_UPDATE_BLOCKS  with a new OP_ADD_BLOCK
                 Key: HDFS-5704
                 URL: https://issues.apache.org/jira/browse/HDFS-5704
             Project: Hadoop HDFS
          Issue Type: Bug
         Environment: Currently every time a block a allocated, the entire list of blocks
are written in the editlog in OP_UPDATE_BLOCKS operation. This has n^2 growth issue. The total
size of editlog records for a file with large number of blocks could be huge.

The goal of this jira is discuss adding a different editlog record that only records allocation
of block and not the entire block list, on every block allocation.
            Reporter: Suresh Srinivas
            Assignee: Suresh Srinivas






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