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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-764) The memory consumption of processReport() in the namenode can be reduced
Date Thu, 30 Nov 2006 00:03:21 GMT
The memory consumption of processReport() in the namenode can be reduced
------------------------------------------------------------------------

                 Key: HADOOP-764
                 URL: http://issues.apache.org/jira/browse/HADOOP-764
             Project: Hadoop
          Issue Type: Bug
          Components: dfs
            Reporter: dhruba borthakur
         Assigned To: dhruba borthakur


The FSNamesystem.processReport() method converts the blocklist for a datanode into an array
by calling node.getBlocks(). Although this memory allocation is transient, it could possibly
require the garbage-collector to work that much harder. 

The method Block.getBlocks() should be deprecated. Code that currently uses this method should
instead iterate over the Collection.

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