[PIG-4597] Enable "TestNullConstant" unit test in spark mode

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: spark-branch
• Component/s: spark
• Assignee: Xianda Ke
• Reporter: Xianda Ke
• Created: 11/Jun/15 07:52
• Updated: 21/Jun/17 09:18
• Resolved: 12/Jun/15 02:49

Description

ant -Dtestcase=TestNullConstant -Dexectype=spark -DdebugPort=9999 -Dhadoopversion=23 test
You will find following unit test failure:

Error Message
expected:<4> but was:<3>
Stacktrace
junit.framework.AssertionFailedError: expected:<4> but was:<3>
at org.apache.pig.test.TestNullConstant.testOuterJoin(TestNullConstant.java:117)

It failed because the actual result of the group operator is not in the same order as expected result.