[PIG-1721] New logical plan: script fail when reuse foreach inner alias

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.8.0
• Component/s: impl
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 12/Nov/10 09:12
• Updated: 17/Dec/10 22:46
• Resolved: 19/Nov/10 22:30

Description

The following script fail:

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;

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)