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Posted to dev@pig.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2011/03/10 20:20:59 UTC
[jira] Commented: (PIG-579) Adding newlines to format foreach
statement with constants causes parse errors
[ https://issues.apache.org/jira/browse/PIG-579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13005267#comment-13005267 ]
Xuefu Zhang commented on PIG-579:
---------------------------------
Appearing to have the same cause as PIg-548.
> Adding newlines to format foreach statement with constants causes parse errors
> ------------------------------------------------------------------------------
>
> Key: PIG-579
> URL: https://issues.apache.org/jira/browse/PIG-579
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.2.0
> Reporter: David Ciemiewicz
> Assignee: Xuefu Zhang
> Fix For: 0.9.0
>
>
> The following code example files with parse errors on step D:
> {code}
> A = LOAD 'student_data' AS (name: chararray, age: int, gpa: float);
> B = LOAD 'voter_data' AS (name: chararray, age: int, registration: chararray, contributions: float);
> C = COGROUP A BY name, B BY name;
> D = FOREACH C GENERATE
> group,
> flatten((not IsEmpty(A) ? A : (bag{tuple(chararray, int, float)}){(null, null, null)})),
> flatten((not IsEmpty(B) ? B : (bag{tuple(chararray, int, chararray, float)}){(null,null,null, null)}));
> dump D;
> {code}
> I get the parse error:
> Caused by: org.apache.pig.impl.logicalLayer.parser.ParseException: Encountered "not IsEmpty ( A ) ? A : ( bag { tuple ( chararray , int , float ) } ;" at line 9, column 18.
> Was expecting one of:
> "(" ...
> "-" ...
> "tuple" ...
> "bag" ...
> "map" ...
> "int" ...
> "long" ...
> ...
> However, if I simply remove the new lines from statement D and make it:
> {code}
> D = FOREACH C GENERATE group, flatten((not IsEmpty(A) ? A : (bag{tuple(chararray, int, float)}){(null, null, null)})), flatten((not IsEmpty(B) ? B : (bag{tuple(chararray, int, chararray, float)}){(null,null,null, null)}));
> {code}
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