Jay Lee created HIVE-11313:
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             Summary: dynamic partition with null and union select fail
                 Key: HIVE-11313
                 URL: https://issues.apache.org/jira/browse/HIVE-11313
             Project: Hive
          Issue Type: Bug
          Components: Tez
    Affects Versions: 0.14.0
         Environment: hive 0.14
hadoop 2.6.0
tez 0.6.1
            Reporter: Jay Lee


Using union with dynamic partition insert will fail if there is a null 
partition name.

hive> select * from testDynamicTezPartitionWithUnionSource;
OK
jay     18      20150101        NULL    NULL
jack    20      20150101        NULL    NULL
linda   25      20150102        BJ      NULL
nancy   33      20150103        BJ      NC

hive> set hive.execution.engine=tez;
hive> set hive.exec.dynamic.partition=true;
hive> insert into table testDynamicTezPartitionWithUnion 
partition(birthday=20150101, city, school) select name, age, city, school from 
testDynamicTezPartitionWithUnionSource where name="jay" union all select name, 
age, city, school from testDynamicTezPartitionWithUnionSource where name="jack";
...
Loading data to table test.testdynamictezpartitionwithunion partition 
(birthday=20150101, city=null, school=null)
Failed with exception MetaException(message:Invalid partition key & values; 
keys [birthday, city, school, ], values [20150101, NULL, ])
FAILED: Execution Error, return code 1 from 
org.apache.hadoop.hive.ql.exec.MoveTask

When change engine to mr, every thing just works fine.



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