[jira] [Created] (PIG-4595) Fix unit test failures about TestFRJoinNullValue in spark mode

["liyunzhang_intel (JIRA)" <ji...@apache.org>]

liyunzhang_intel created PIG-4595:
-------------------------------------

             Summary: Fix unit test failures about TestFRJoinNullValue in spark mode
                 Key: PIG-4595
                 URL: https://issues.apache.org/jira/browse/PIG-4595
             Project: Pig
          Issue Type: Sub-task
            Reporter: liyunzhang_intel
            Assignee: liyunzhang_intel


based on f9a50f3, using following command to test TestFRJoinNullValue：
ant -Dtestcase=TestFRJoinNullValue -Dexectype=spark  -Dhadoopversion=23  test 

following ut fail:
• org.apache.pig.test.TestFRJoinNullValue.testTupleLeftNullMatch
• org.apache.pig.test.TestFRJoinNullValue.testLeftNullMatch
• org.apache.pig.test.TestFRJoinNullValue.testTupleNullMatch
• org.apache.pig.test.TestFRJoinNullValue.testNullMatch

The reason why these unit test fail is because null value from table a and table b are considered same when table a fr join table b.





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