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https://issues.apache.org/jira/browse/PIG-932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich resolved PIG-932.
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    Resolution: Duplicate

This is duplicate of https://issues.apache.org/jira/browse/PIG-1324

> Required fields projection in Loader: nested fields in bag/tuple, map key 
> lookup more than two levels
> -----------------------------------------------------------------------------------------------------
>
>                 Key: PIG-932
>                 URL: https://issues.apache.org/jira/browse/PIG-932
>             Project: Pig
>          Issue Type: Improvement
>          Components: impl
>    Affects Versions: 0.3.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.8.0
>
>
> To leverage the performance features provided by Zebra, Pig should be able to 
> figure out which input fields are actually used in Pig script, and prune 
> unnecessary inputs. This feature is being implementing in 
> [PIG-922|https://issues.apache.org/jira/browse/PIG-922]. However, there are 
> two limitations currently:
> 1. Pruning nested fields only apply to map. We do not prune sub-field inside 
> a bag or tuple
> 2. For map, currently we only go one level deep. Eg, if in Pig script, user 
> uses a#'key0'#'key1', a#'key0' will be asked
> These two limitations are in line with current limitation of Zebra loader. 
> Once Zebra loader can handle this, we need to work to lift these limitations.

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