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Posted to dev@pig.apache.org by "Santhosh Srinivasan (JIRA)" <ji...@apache.org> on 2008/07/23 02:57:31 UTC
[jira] Updated: (PIG-306) count with multiple group by keys fails
[ https://issues.apache.org/jira/browse/PIG-306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Santhosh Srinivasan updated PIG-306:
------------------------------------
Attachment: cogroup_schema.patch
The patch fixes the following:
1. Cogroup schema compuation
2. LOMapLookup fieldSchema computation
Unit test cases that still fail are:
[junit] Running org.apache.pig.test.TestEvalPipeline
[junit] Tests run: 8, Failures: 0, Errors: 1, Time elapsed: 179.904 sec
[junit] Test org.apache.pig.test.TestEvalPipeline FAILED
[junit] Running org.apache.pig.test.TestFilterOpNumeric
[junit] Tests run: 8, Failures: 0, Errors: 1, Time elapsed: 56.124 sec
[junit] Test org.apache.pig.test.TestFilterOpNumeric FAILED
[junit] Running org.apache.pig.test.TestBuiltin
[junit] Tests run: 23, Failures: 1, Errors: 1, Time elapsed: 14.8 sec
[junit] Test org.apache.pig.test.TestBuiltin FAILED
[junit] Running org.apache.pig.test.TestStoreOld
[junit] Tests run: 3, Failures: 0, Errors: 2, Time elapsed: 21.453 sec
[junit] Test org.apache.pig.test.TestStoreOld FAILED
> count with multiple group by keys fails
> ---------------------------------------
>
> Key: PIG-306
> URL: https://issues.apache.org/jira/browse/PIG-306
> Project: Pig
> Issue Type: Bug
> Affects Versions: types_branch
> Reporter: Alan Gates
> Assignee: Santhosh Srinivasan
> Fix For: types_branch
>
> Attachments: cogroup_schema.patch
>
>
> The query:
> {code}
> a = load 'myfile' as (name, age, gpa);
> b = group a by (name, age);
> c = foreach b generate group.name, group.age, COUNT(a.gpa);
> store c into 'outfile';
> {code}
> generates
> 07-12 16:55:54,348 [main] ERROR org.apache.pig.impl.mapReduceLayer.Launcher - Error message from task (reduce) tip_200807090821_0580_r_000000 java.lang.ClassCastException: org.apache.pig.data.DataByteArray cannot be cast to org.apache.pig.data.Tuple
> at org.apache.pig.impl.physicalLayer.expressionOperators.POProject.getNext(POProject.java:262)
> at org.apache.pig.impl.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:189)
> at org.apache.pig.impl.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:148)
> at org.apache.pig.impl.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:164)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:333)
> at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2071)
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