Reviewed-by: Masatake Iwasaki <iwasakims@apache.org> (cherry picked from commit 9b9e2ef87ffe7b33dc01699892acf62965fb3550) Conflicts: hadoop-tools/hadoop-federation-balance/pom.xml (cherry picked from commit 35c5c6bb83beb4f68e1ff18907589b062a0467e8) Conflicts: hadoop-common-project/hadoop-registry/pom.xml
DistCp (distributed copy) is a tool used for large inter/intra-cluster copying. It uses Map/Reduce to effect its distribution, error handling and recovery, and reporting. It expands a list of files and directories into input to map tasks, each of which will copy a partition of the files specified in the source list.