public VectorizedRowBatch createRowBatch(boolean useDecimal64) {
    return useDecimal64 ? this.schema.createRowBatchV2() : this.schema.createRowBatch();
  }
If the current batch is empty, get a new one.
@return true if we have rows available.
@throws IOException
ql/src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java