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https://issues.apache.org/jira/browse/HIVE-15099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15622899#comment-15622899
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Wei Zheng commented on HIVE-15099:
----------------------------------
Sample query that can reproduce the issue
{code}
SELECT 1
FROM (
SELECT a,
b,
row_number() OVER ( partition BY a ORDER BY c DESC ) AS rank
FROM t1) x
JOIN
(
SELECT a,
row_number() OVER ( partition BY a ORDER BY c DESC ) AS rank
FROM t2) y
ON y.a=x.a
LEFT OUTER JOIN
(
SELECT a,
row_number() OVER ( partition BY a ORDER BY c DESC ) AS rank
FROM t3) z
ON y.a=z.a
WHERE x.rank = 1
AND y.rank=1
{code}
> PTFOperator.PTFInvocation didn't properly reset the input partition
> -------------------------------------------------------------------
>
> Key: HIVE-15099
> URL: https://issues.apache.org/jira/browse/HIVE-15099
> Project: Hive
> Issue Type: Bug
> Components: Hive, PTF-Windowing
> Affects Versions: 1.3.0, 1.2.1, 2.1.0, 2.2.0
> Reporter: Wei Zheng
> Assignee: Wei Zheng
>
> There is an issue with PTFOperator.PTFInvocation where the inputPart is not
> reset properly. The inputPart has been closed and its content (member
> variables) has been cleaned up, but since itself is not nullified, it's
> reused in the next round and caused NPE issue.
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