Alex Behm has posted comments on this change.

Change subject: IMPALA-5504: Fix TupleIsNullPredicate evaluation.
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Patch Set 2:

Tim has a good point and I did investigate that. 

The underlying problem in this JIRA and in IMPALA-1987 is the same, but 
IMPALA-1987 did not fix is correctly.

The code before the fix for IMPALA-1987 was not correct because it only checked 
the nullable tuples in that loop. But the predicate should always return false 
if there is at least one non-nullable tuple.

The fix IMPALA-1987 for was still not correct for the reasons stated in the 
commit message here.

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Gerrit-MessageType: comment
Gerrit-Change-Id: Id659f849a68d88cfe22c65dd1747dd6d6a916163
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Alex Behm <[email protected]>
Gerrit-Reviewer: Alex Behm <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Matthew Jacobs <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
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