default long modifyTable(final TableName tableName, final TableDescriptor descriptor,
    final long nonceGroup, final long nonce) throws IOException {
    return modifyTable(tableName, descriptor, nonceGroup, nonce, true);
  }
Modify the descriptor of an existing table
@param tableName  The table name
@param descriptor The updated table descriptor
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterServices.java