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Posted to dev@pig.apache.org by "Gianmarco De Francisci Morales (JIRA)" <ji...@apache.org> on 2012/10/13 01:15:04 UTC
[jira] [Commented] (PIG-2970) Nested foreach getting incorrect
schema when having unrelated inner query
[ https://issues.apache.org/jira/browse/PIG-2970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475423#comment-13475423 ]
Gianmarco De Francisci Morales commented on PIG-2970:
-----------------------------------------------------
Haven't had time to look at the patch, but I guess it is related to PIG-2119.
I thought we had solved it though.
> Nested foreach getting incorrect schema when having unrelated inner query
> -------------------------------------------------------------------------
>
> Key: PIG-2970
> URL: https://issues.apache.org/jira/browse/PIG-2970
> Project: Pig
> Issue Type: Bug
> Components: parser
> Reporter: Koji Noguchi
> Assignee: Koji Noguchi
> Priority: Minor
> Attachments: pig-2970-trunk-v01.txt
>
>
> While looking at PIG-2968, hit a weird error message.
> {noformat}
> $ cat -n test/foreach2.pig
> 1 daily = load 'nyse' as (exchange, symbol);
> 2 grpd = group daily by exchange;
> 3 unique = foreach grpd {
> 4 sym = daily.symbol;
> 5 uniq_sym = distinct sym;
> 6 --ignoring uniq_sym result
> 7 generate group, daily;
> 8 };
> 9 describe unique;
> 10 zzz = foreach unique generate group;
> 11 explain zzz;
> % pig -x local -t ColumnMapKeyPrune test/foreach2.pig
> ...
> unique: {symbol: bytearray}
> 2012-10-12 16:55:44,226 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1025:
> <file test/foreach2.pig, line 10, column 30> Invalid field projection. Projected field [group] does not exist in schema: symbol:bytearray.
> ...
> {noformat}
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