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https://issues.apache.org/jira/browse/PIG-288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pi Song updated PIG-288:
------------------------
Attachment: PIG_288_OptimizerNPE_2.patch
Just found out that the thing I mentioned already exists so moved the COGroup
fixing logic to the appropriate place.
The test is still failing though due to problem in JarManager instead now.
> Null pointer exception with load as schema - Optimizer
> ------------------------------------------------------
>
> Key: PIG-288
> URL: https://issues.apache.org/jira/browse/PIG-288
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: types_branch
> Reporter: Santhosh Srinivasan
> Attachments: PIG_288_OptimizerNPE.patch, PIG_288_OptimizerNPE_2.patch
>
>
> A new test case (testNestedPlan) added to TestEvalPipeline has the following
> query:
> pig.registerQuery("A = LOAD 'file:" + tmpFile + "'as (a:int,
> b:int);");
> pig.registerQuery("B = group A by $0;");
> + "C1 = filter A by $0 > -1;"
> + "C2 = distinct C1;"
> + "C3 = distinct A;"
> + "generate (int)group;"
> + "};";
> Testcase: testNestedPlan took 0.913 sec
> Caused an ERROR
> Unable to open iterator for alias: C
> java.io.IOException: Unable to open iterator for alias: C
> at
> org.apache.pig.impl.util.WrappedIOException.wrap(WrappedIOException.java:34)
> at org.apache.pig.PigServer.openIterator(PigServer.java:268)
> at
> org.apache.pig.test.TestEvalPipeline.testNestedPlan(TestEvalPipeline.java:376)
> Caused by: org.apache.pig.impl.plan.optimizer.OptimizerException: Unable to
> insert type casts into plan
> at
> org.apache.pig.impl.logicalLayer.optimizer.TypeCastInserter.transform(TypeCastInserter.java:144)
> at
> org.apache.pig.impl.plan.optimizer.PlanOptimizer.optimize(PlanOptimizer.java:63)
> at org.apache.pig.PigServer.compileLp(PigServer.java:551)
> at org.apache.pig.PigServer.execute(PigServer.java:477)
> at org.apache.pig.PigServer.openIterator(PigServer.java:259)
> ... 16 more
> Caused by: java.lang.NullPointerException
> at org.apache.pig.impl.logicalLayer.LOVisitor.visit(LOVisitor.java:121)
> at
> org.apache.pig.impl.logicalLayer.optimizer.SchemaRemover.visit(SchemaRemover.java:65)
> at org.apache.pig.impl.logicalLayer.LOCogroup.visit(LOCogroup.java:273)
> at org.apache.pig.impl.logicalLayer.LOCogroup.visit(LOCogroup.java:37)
> at
> org.apache.pig.impl.plan.DependencyOrderWalker.walk(DependencyOrderWalker.java:68)
> at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
> at
> org.apache.pig.impl.logicalLayer.optimizer.LogicalTransformer.rebuildSchemas(LogicalTransformer.java:57)
> at
> org.apache.pig.impl.logicalLayer.optimizer.TypeCastInserter.transform(TypeCastInserter.java:141)
> ... 20 more
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