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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-995) Limit Optimizer throw exception "ERROR 2156: Error while fixing projections"
Date Mon, 05 Oct 2009 18:54:31 GMT
Limit Optimizer throw exception "ERROR 2156: Error while fixing projections"

                 Key: PIG-995
                 URL: https://issues.apache.org/jira/browse/PIG-995
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.3.0
            Reporter: Daniel Dai
             Fix For: 0.6.0

The following script fail:

A = load '1.txt' AS (a0, a1, a2);
B = order A by a1;
C = limit B 10;
D = foreach C generate $0;
dump D;

Error log:
Caused by: org.apache.pig.impl.plan.VisitorException: ERROR 2156: Error while fixing projections.
Projection map of node to be replaced is null.
        at org.apache.pig.impl.logicalLayer.ProjectFixerUpper.visit(ProjectFixerUpper.java:138)
        at org.apache.pig.impl.logicalLayer.LOProject.visit(LOProject.java:408)
        at org.apache.pig.impl.logicalLayer.LOProject.visit(LOProject.java:58)
        at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:65)
        at org.apache.pig.impl.plan.DepthFirstWalker.walk(DepthFirstWalker.java:50)
        at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
        at org.apache.pig.impl.logicalLayer.LOForEach.rewire(LOForEach.java:761)

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