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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-858) Order By followed by "replicated" join fails while compiling MR-plan from physical plan
Date Fri, 19 Jun 2009 18:22:07 GMT
Order By followed by "replicated" join fails while compiling MR-plan from physical plan
---------------------------------------------------------------------------------------

                 Key: PIG-858
                 URL: https://issues.apache.org/jira/browse/PIG-858
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.3.0
            Reporter: Ashutosh Chauhan
             Fix For: 0.4.0


Consider the query:
{code}
A = load 'a';
B = order A by $0;
C = join A by $0, B by $0;
explain C;
{code}
works. But if replicated join is used instead
{code}
A = load 'a';
B = order A by $0;
C = join A by $0, B by $0 using "replicated";
explain C;
{code}
this fails with ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2034: Error compiling operator
POFRJoin
relevant stacktrace:
{code}
Caused by: java.lang.RuntimeException: org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompilerException:
ERROR 2034: Error compiling operator POFRJoin
        at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.explain(HExecutionEngine.java:306)
        at org.apache.pig.PigServer.explain(PigServer.java:574)
        ... 8 more
Caused by: org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompilerException:
ERROR 2034: Error compiling operator POFRJoin
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.visitFRJoin(MRCompiler.java:942)
        at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POFRJoin.visit(POFRJoin.java:173)
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.compile(MRCompiler.java:342)
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.compile(MRCompiler.java:327)
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.compile(MRCompiler.java:233)
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.compile(MapReduceLauncher.java:301)
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.explain(MapReduceLauncher.java:278)
        at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.explain(HExecutionEngine.java:303)
        ... 9 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.visitFRJoin(MRCompiler.java:901)
        ... 16 more
{code}

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