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https://issues.apache.org/jira/browse/PIG-315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pi Song updated PIG-315:
------------------------
Attachment: PIG315.patch
The patch!
1) In "(long)age as age" we treat "as" as type cast but in fact it is only used
for altering the alias in this context
2) "SUM(age)" is aggregate of a flattened member which is a case we haven't
handled yet in type checker (Normally we do like SUM(A.age) ).
I think how we treat aggregates still can be improved to be cleaner.
> Issue with cast in foreach
> --------------------------
>
> Key: PIG-315
> URL: https://issues.apache.org/jira/browse/PIG-315
> Project: Pig
> Issue Type: Bug
> Affects Versions: types_branch
> Reporter: Pradeep Kamath
> Fix For: types_branch
>
> Attachments: PIG315.patch
>
>
> Query which causes error:
> {code}
> a = load ':INPATH:/singlefile/studenttab10k' as (name:chararray, age:int,
> gpa:double);
> b = foreach a generate (long)age as age, (int)gpa as gpa;
> c = foreach b generate SUM(age), SUM(gpa);
> store c into ':OUTPATH:';\,
> {code}
> Error:
> {quote}
> 2008-07-14 16:34:42,130 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting
> to hadoop file system at: mytesthost:8020
> 2008-07-14 16:34:42,187 [main] WARN org.apache.hadoop.fs.FileSystem -
> "mytesthost:8020" is a deprecated filesystem name. Use
> "hdfs://mytesthost:8020/" instead.
> 2008-07-14 16:34:42,441 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting
> to map-reduce job tracker at: mytesthost:50020
> 2008-07-14 16:34:42,696 [main] WARN org.apache.hadoop.fs.FileSystem -
> "mytesthost:8020" is a deprecated filesystem name. Use
> "hdfs://mytesthost:8020/" instead.
> 2008-07-14 16:34:43,006 [main] ERROR org.apache.pig.PigServer - Problem
> resolving LOForEach schema
> 2008-07-14 16:34:43,006 [main] ERROR org.apache.pig.PigServer - Severe
> problem found during validation
> org.apache.pig.impl.plan.PlanValidationException: An unexpected exception
> caused the validation to stop
> 2008-07-14 16:34:43,007 [main] ERROR org.apache.pig.tools.grunt.Grunt -
> java.io.IOException: Unable to store for alias: c
> {quote}
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