Secondary sort fail when dereferencing two fields inside foreach
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Key: PIG-1978
URL: https://issues.apache.org/jira/browse/PIG-1978
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.9.0
Reporter: Daniel Dai
Assignee: Daniel Dai
Fix For: 0.9.0
The following script fail:
{code}
a = load '1.txt' as (a0, a1, a2);
b = group a by (a0, a1);
c = foreach b {
c1 = a.(a1,a2);
generate group, c1;
}
explain c;
{code}
Error message:
Caused by: org.apache.pig.impl.logicalLayer.FrontendException: ERROR 0:
POForEach has more than 1 input plans
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.SecondaryKeyOptimizer$SecondaryKeyDiscover.processForEach(SecondaryKeyOptimizer.java:551)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.SecondaryKeyOptimizer$SecondaryKeyDiscover.processRoot(SecondaryKeyOptimizer.java:485)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.SecondaryKeyOptimizer$SecondaryKeyDiscover.process(SecondaryKeyOptimizer.java:470)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.SecondaryKeyOptimizer.visitMROp(SecondaryKeyOptimizer.java:254)
Thanks William reporting.
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