protected int runDistCpInternal(DistCp distcp, List<String> params) {
    ensureMapReduceQueue(distcp.getConf());
    return distcp.run(params.toArray(new String[0]));
  }
Constructs the params to be passed for using snapshot based replication
@param srcPaths source paths
@param dst destination
@param sourceSnap starting snapshot
@param destSnap end snapshot
@param conf hive configuration
@param diff -diff or -rdiff
@return
shims/0.23/src/main/java/org/apache/hadoop/hive/shims/Hadoop23Shims.java