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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (PIG-1847) implement typechecking and lineage tracking on new logical plan
Date Wed, 02 Mar 2011 21:31:36 GMT

     [ https://issues.apache.org/jira/browse/PIG-1847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thejas M Nair resolved PIG-1847.
--------------------------------

      Resolution: Duplicate
    Release Note: The typechecker and lineage tracking on new plan is part of NewParser-18.patch
in PIG-1618 .

> implement typechecking and lineage tracking on new logical plan
> ---------------------------------------------------------------
>
>                 Key: PIG-1847
>                 URL: https://issues.apache.org/jira/browse/PIG-1847
>             Project: Pig
>          Issue Type: Task
>    Affects Versions: 0.8.0
>            Reporter: Thejas M Nair
>            Assignee: Thejas M Nair
>             Fix For: 0.9.0
>
>         Attachments: PIG-1847.1.patch
>
>
> In 0.8, TypeCheckingVisitor works on the old logical plan, before it is translated to
new logical plan. The TypeCheckingVisitor checks the types in expressions, adds casts and
tracks lineage for identifying which load function's LoadCaster interface is to be used to
convert bytearrays into other types. 
> As the old logical plan is going away in 0.9,  this functionality needs to be added for
new plan.

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