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https://issues.apache.org/jira/browse/PIG-972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876764#action_12876764
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Aniket Mokashi commented on PIG-972:
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describe c and describe c::d seems more intuitive.
Further changes-
1. Currently, we are not using a deterministic way to search for nested alias
in internal plans.
With changes, we will dump the schema of latest statement for d.
For example, if we have,
{code}
c = foreach b { d = order a by $0; d = filter d by d.$0 > 0; generate d.$1;}
describe c::d;
{code}
This will dump the schema for last statement associated with d (filter). This
will be achieved by traversing the plan from leaves to root while searching for
nested alias d.
2. nested alias list is redundant and will be removed.
> Make describe work with nested foreach
> --------------------------------------
>
> Key: PIG-972
> URL: https://issues.apache.org/jira/browse/PIG-972
> Project: Pig
> Issue Type: Improvement
> Reporter: Olga Natkovich
> Assignee: Aniket Mokashi
> Fix For: 0.8.0
>
> Attachments: NestedDescribeProp1.patch,
> NestedDescribeProp2Initial.patch
>
>
> Currently Parser can't deal with that. This is because describe is part of
> Grunt parser while the rest of nested foreach is handled by the QueryParser
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