default boolean supportsAppendData(Table table, boolean withPartClause) throws SemanticException {
    return false;
  }
Checks whether the table supports appending data files to the table.
@param table the table
@param withPartClause whether a partition is specified
@return true if the table can append files directly to the table
@throws SemanticException in case of any error.
ql/src/java/org/apache/hadoop/hive/ql/metadata/HiveStorageHandler.java