[
https://issues.apache.org/jira/browse/PIG-359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12626647#action_12626647
]
Santhosh Srinivasan commented on PIG-359:
-----------------------------------------
In POUserFunc.java, the following code makes an assumption that project( * )
always returns a tuple. In the foreach nested block, we could be projecting
bags, at which point the code will fail with ClassCastException. E.g:
testNestedPlan in TestEvalPipeline.java
{code}
+ if(op instanceof POProject){
+ POProject projOp = (POProject)op;
+ if(projOp.isStar()){
+ Tuple trslt = (Tuple) temp.result;
+ Tuple rslt = (Tuple) res.result;
+ for(int i=0;i<trslt.size();i++)
+ rslt.append(trslt.get(i));
+ continue;
+ }
+ }
{code}
> Semantics of generate * have changed
> ------------------------------------
>
> Key: PIG-359
> URL: https://issues.apache.org/jira/browse/PIG-359
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: types_branch
> Reporter: Alan Gates
> Assignee: Shravan Matthur Narayanamurthy
> Fix For: types_branch
>
> Attachments: 359-1.patch, 359.patch
>
>
> In the main trunk, the script
> A = load 'myfile';
> B = foreach A generate *;
> returns:
> (x, y, z)
> In the types branch, it returns:
> ((x, y, z))
> There is an extra level of tuple in it. In the main branch generate * seems
> to include an implicit flatten.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
