[ 
https://issues.apache.org/jira/browse/PIG-428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12669687#action_12669687
 ] 

Pradeep Kamath commented on PIG-428:
------------------------------------

Have you tried your query with top of trunk? The original issue fixed in this 
issue was when the TypeCastInserter was involved in the query. That is the case 
only when the load statement has a schema like " a = load 'bla' as (x:int, 
y:float);". In your query in the previous comment the load statement does not 
have a schema. I am wondering if the issues is somewhere else in that query but 
the error message is the same. 

> TypeCastInserter does not replace projects in inner plans correctly
> -------------------------------------------------------------------
>
>                 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
>
>         Attachments: PIG-428.patch
>
>
> 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}

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.

Reply via email to