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Package org.apache.hadoop.hdfs.tools

Added Classes
DelegationTokenFetcher Fetch a DelegationToken from the current Namenode and store it in the specified file.
HDFSConcat  
JMXGet tool to get data from NameNode or DataNode using MBeans currently the following MBeans are available (under hadoop domain): hadoop:service=NameNode name=FSNamesystemState (static) hadoop:service=NameNode name=NameNodeActivity (dynamic) hadoop:service=NameNode name=RpcActivityForPort9000 (dynamic) hadoop:service=DataNode name=RpcActivityForPort50020 (dynamic) hadoop:name=service=DataNode FSDatasetState-UndefinedStorageId663800459 (static) hadoop:service=DataNode name=DataNodeActivity-UndefinedStorageId-520845215 (dynamic) implementation note: all logging is sent to System.err (since it is a command line tool)
 

Changed Classes
DFSAdmin This class provides some DFS administrative access.
DFSck This class provides rudimentary checking of DFS volumes for errors and sub-optimal conditions.