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Posted to dev@pig.apache.org by "Rohini Palaniswamy (JIRA)" <ji...@apache.org> on 2016/04/26 01:38:15 UTC
[jira] [Updated] (PIG-3133) Revamp algebraic interface to actually
return classes
[ https://issues.apache.org/jira/browse/PIG-3133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rohini Palaniswamy updated PIG-3133:
------------------------------------
Fix Version/s: (was: 0.16.0)
0.17.0
> Revamp algebraic interface to actually return classes
> -----------------------------------------------------
>
> Key: PIG-3133
> URL: https://issues.apache.org/jira/browse/PIG-3133
> Project: Pig
> Issue Type: Improvement
> Reporter: Jonathan Coveney
> Fix For: 0.17.0
>
>
> The current algebraic interface is a bit weird to work with. It would make a lot more sense to let people return Class<? extends EvalFunc<Tuple>> or what have you, or even a FuncSpec, but the current string based approach circumvents the whole point of using Java and is annoying. I think we should have an abstract EFInitial, EFIntermediate, EFFinal which implemented the exec function for the user, but in terms of a simpler, clearer interface. This way if people really want the old way they can, but we can present them something less ugly.
> This would also be a good time to clarify the contracts of Algebraics and simplify them (the initial function's "a tuple which contains a bag which contains 1 tuple" is super whack).
> If anyone wants to work on this let me know because this is the sort of thing I will probably bang out when procrastinating something else.
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