Eric Hanson created HIVE-4533:
---------------------------------
Summary: vectorized NotNull operation does not handle
short-circuit evaluation for NULL propagation correctly
Key: HIVE-4533
URL: https://issues.apache.org/jira/browse/HIVE-4533
Project: Hive
Issue Type: Sub-task
Reporter: Eric Hanson
This code does not look at the selection vector so it may waste time
propagating nulls if the batch has already been filtered.
A more serious problem is that it only copies over n entries. So if a filter
has been applied, nulls my not be copied over when they should.
// handle NULLs
if (inputColVector.noNulls) {
outV.noNulls = true;
} else {
outV.noNulls = false;
if (inputColVector.isRepeating) {
outV.isNull[0] = inputColVector.isNull[0];
} else {
System.arraycopy(inputColVector.isNull, 0, outV.isNull, 0, n);
}
}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
