problem in union if the first subquery is a map-only job
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Key: HIVE-384
URL: https://issues.apache.org/jira/browse/HIVE-384
Project: Hadoop Hive
Issue Type: Bug
Reporter: Namit Jain
Assignee: Namit Jain
Union needs special handling.
explain
select unionsrc.key, count(1) FROM (select s2.key as key, s2.value as value
from src1 s2
UNION ALL
select 'tst1' as key, cast(count(1) as
string) as value from src s1)
unionsrc group by unionsrc.key;
results in a null pointer exception
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