The memory consumption of processReport() in the namenode can be reduced
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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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