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Key: PIG-428
URL: https://issues.apache.org/jira/browse/PIG-428
Project: Pig
Issue Type: Bug
Affects Versions: types_branch
Reporter: Pradeep Kamath
Fix For: types_branch
The TypeCastInserter tries to replace the Project's input operator in inner plans with the new foreach operator it adds. However it should replace only those Projects' input where the new Foreach has been added after the operator which was earlier the input to Project.
Here is a query which fails due to this:
{code}
a = load 'st10k' as (name:chararray,age:int, gpa:double);
another = load 'st10k';
c = foreach another generate $0, $1+ 10, $2 + 10;
d = join a by $0, c by $0;
dump d;
{code}
Here is the error:
{noformat}
2008-09-11 23:34:28,169 [main] ERROR org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - Error message from task (map) tip_200809051428_0045_m_000000java.io.IOException: Type mismatch in key from map: expected org.apache.pig.impl.io.NullableText, recieved org.apache.pig.impl.io.NullableBytesWritable
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect(MapTask.java:419)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Map.collect(PigMapReduce.java:83)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.runPipeline(PigMapBase.java:172)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:158)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Map.map(PigMapReduce.java:75)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:47)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:219)
at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2124)
{noformat}
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