void flushInternalBatch() throws IOException {
    if (internalBatch.size != 0) {
      super.addRowBatch(internalBatch);
      internalBatch.reset();
    }
  }
Set the value for a given column value within a batch.
@param rowId the row to set
@param column the column to set
@param inspector the object inspector to interpret the obj
@param obj the value to use
ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.java