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https://issues.apache.org/jira/browse/PIG-333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Gates reassigned PIG-333:
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Assignee: Alan Gates (was: Santhosh Srinivasan)
> MIN on strings (undeclared) gives strange error in store
> --------------------------------------------------------
>
> Key: PIG-333
> URL: https://issues.apache.org/jira/browse/PIG-333
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.2.0
> Reporter: Pradeep Kamath
> Assignee: Alan Gates
> Priority: Minor
> Fix For: 0.9.0
>
>
> Script which causes error:
> {code}
> a = load '/user/pig/tests/data/singlefile/votertab10k' as (name, age,
> registration, contribution);
> b = group a all;
> c = foreach b generate MIN(a.name), MAX(a.name);
> store c into '/tmp';
> {code}
> Error:
> {noformat}
> 2008-07-23 11:31:15,415 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - 0.0%
> complete
> 2008-07-23 11:31:19,167 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - 50.0%
> complete
> 2008-07-23 11:31:43,431 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher -
> 100.0% complete
> 2008-07-23 11:31:45,956 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher -
> Unsuccessful attempt. Completed 0.0% of the job
> 2008-07-23 11:31:45,969 [main] ERROR
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - Error
> message from task (map) tip_200807231111_0002_m_000000
> 2008-07-23 11:31:45,974 [main] ERROR
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - Error
> message from task (reduce) tip_200807231111_0002_r_000000
> java.io.IOException: Cannot store a non-flat tuple using PigStorage
> at org.apache.pig.builtin.PigStorage.putNext(PigStorage.java:163)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:117)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:90)
> at org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:373)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:170)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:85)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:391)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2124)
> java.io.IOException: Cannot store a non-flat tuple using PigStorage
> at org.apache.pig.builtin.PigStorage.putNext(PigStorage.java:163)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:117)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:90)
> at org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:373)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:170)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:85)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:391)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2124)
> java.io.IOException: Cannot store a non-flat tuple using PigStorage
> at org.apache.pig.builtin.PigStorage.putNext(PigStorage.java:163)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:117)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:90)
> at org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:373)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:170)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:85)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:391)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2124)
> java.io.IOException: Cannot store a non-flat tuple using PigStorage
> at org.apache.pig.builtin.PigStorage.putNext(PigStorage.java:163)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:117)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:90)
> at org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:373)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:170)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:85)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:391)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2124)
> {noformat}
> MIN in the default case converts the ByteArray input to a Double and tries to
> compute a MIN of the doubles. Since in the above query the column actually
> contains strings, the conversion from string to double should fail with a
> NumberFormat exception - instead the error shows up differently in the store
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