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Hadoop, mail # user - distcp can not use in yarn??

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distcp can not use in yarn??
ch huang 2013-08-14, 06:19
i use yarn ,and i try distcp tool ,it can not work normal,why?

# hadoop distcp -p -m 100 -update -skipcrccheck -log /distcp /alex /carl
13/08/14 14:17:02 INFO tools.DistCp: srcPaths=[/alex, /carl]
13/08/14 14:17:02 INFO tools.DistCp: destPath=/distcp
13/08/14 14:17:03 WARN conf.Configuration: session.id is deprecated.
Instead, use dfs.metrics.session-id
13/08/14 14:17:03 INFO jvm.JvmMetrics: Initializing JVM Metrics with
processName=JobTracker, sessionId13/08/14 14:17:03 WARN conf.Configuration: slave.host.name is deprecated.
Instead, use dfs.datanode.hostname
13/08/14 14:17:03 INFO tools.DistCp: sourcePathsCount=2
13/08/14 14:17:03 INFO tools.DistCp: filesToCopyCount=0
13/08/14 14:17:03 INFO tools.DistCp: bytesToCopyCount=0
13/08/14 14:17:03 INFO jvm.JvmMetrics: Cannot initialize JVM Metrics with
processName=JobTracker, sessionId= - already initialized