private static String toHex(ImmutableBytesWritable bytes) {
      return Bytes.toHex(bytes.get(), bytes.getOffset(), bytes.getLength());
    }
Finish the currently open hash batch. Compare the target hash to the given source hash. If
they do not match, then sync the covered key range.
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/SyncTable.java