@Override
      public String toString() {
        return "{recordReader=" + recordReader + ", isBucketPropertyRepeating=" + isBucketPropertyRepeating +
            ", bucketForSplit=" + bucketForSplit + ", isBucketedTable=" + isBucketedTable + "}";
      }
Whenever we are reading a batch, we must ensure that all the records in the batch
have the same bucket id as the bucket id of the split. If not, throw exception.
ql/src/java/org/apache/hadoop/hive/ql/io/orc/VectorizedOrcAcidRowBatchReader.java