New logical plan: script fail when reuse foreach inner alias
------------------------------------------------------------
Key: PIG-1721
URL: https://issues.apache.org/jira/browse/PIG-1721
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.8.0
Reporter: Daniel Dai
Assignee: Daniel Dai
Fix For: 0.8.0
The following script fail:
{code}
a = load '1.txt' as (a0:int, a1:map[]);
b = filter a by a0==1;
c = FOREACH b {
b0 = a1#'key1';
generate ((b0 is null or b0 == '')?1:0);
}
dump c;
{code}
In the foreach inner plan, b0 is used twice.
Error message:
java.lang.ClassCastException: org.apache.pig.data.BinSedesTuple cannot be cast
to java.util.Map
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POMapLookUp.getNext(POMapLookUp.java:100)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POMapLookUp.getNext(POMapLookUp.java:117)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POIsNull.getNext(POIsNull.java:72)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POOr.getNext(POOr.java:67)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POBinCond.getNext(POBinCond.java:172)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:355)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:291)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.runPipeline(PigMapBase.java:236)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:231)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:53)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:621)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:177)
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