[ http://issues.apache.org/jira/browse/HADOOP-764?page=all ]
dhruba borthakur updated HADOOP-764:
------------------------------------
Attachment: processBlockReport.patch
Request for code review.
> 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
> Attachments: processBlockReport.patch
>
>
> 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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