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HDFS, mail # user - trace class calls in hadoop hdfs


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trace class calls in hadoop hdfs
Karim Awara 2013-11-04, 09:24
Hi,

I want to trace the calls that both the DataNode and the NameNode do when I
execute a shell command on the hdfs such as (hadoop dfs -put {src} {dst}).
Any idea how to do that?
; tracing including the data node asking the name node for the blockID..
also the class where datanode use to determine the replica datanodes in the
pipe ..etc

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Best Regards,
Karim Ahmed Awara

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