[jira] [Created] (PIG-4968) Fix unit test failure of TestLogicalPlanBuilder#testQuery90

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

liyunzhang_intel created PIG-4968:
-------------------------------------

             Summary: Fix unit test failure of TestLogicalPlanBuilder#testQuery90 
                 Key: PIG-4968
                 URL: https://issues.apache.org/jira/browse/PIG-4968
             Project: Pig
          Issue Type: Bug
            Reporter: liyunzhang_intel
            Assignee: liyunzhang_intel


In jenkins, [it |https://builds.apache.org/job/Pig-trunk/1935/#showFailuresLink] shows that TestLogicalPlanBuilder#testQuery90 fails. After debugging, it always fails in 
[Line1139 |https://github.com/apache/pig/blob/trunk/test/org/apache/pig/test/TestLogicalPlanBuilder.java#L1138]
{code}
 Assert.assertTrue(foreach.getSchema().toString( false ).equals("mygroup:tuple(myname:chararray,myage:int),mycount:long"));
{code}

The script is 
{code}
a = load 'myfile' as (name:Chararray, age:Int, gpa:Float);b = group a by (name, age);c = foreach b generate group as mygroup:(myname, myage), COUNT(a) as mycount;store c into 'output';
{code}
        
The reason why fails is because the schema of mygroup(myname,myage) is 
mygroup(myname:bytearray,myage:bytearray) and this user-defined schema is assigned to c. so the schema of c is
not mygroup:tuple(myname:chararray,myage:int) but mygroup:tuple(myname:bytearray,myage:bytearray).

This problem is imported since PIG-2315 as ForEachUserSchemaVisitor is used in [LogicalPlan|https://github.com/apache/pig/blob/trunk/src/org/apache/pig/newplan/logical/relational/LogicalPlan.java#L179].



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