@Override
  public HDFSBlocksDistribution computeHDFSBlocksDistribution(Configuration conf,
    TableDescriptor tableDescriptor, RegionInfo regionInfo) throws IOException {
    return HRegion.computeHDFSBlocksDistribution(conf, tableDescriptor, regionInfo);
  }
Use to add balancer decision history to ring-buffer
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/MasterClusterInfoProvider.java