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Posted to dev@pig.apache.org by "Daniel Dai (JIRA)" <ji...@apache.org> on 2014/02/25 18:36:21 UTC
[jira] [Resolved] (PIG-3777) Pig 12.0 Documentation
[ https://issues.apache.org/jira/browse/PIG-3777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Dai resolved PIG-3777.
-----------------------------
Resolution: Fixed
Fix Version/s: 0.13.0
0.12.1
Assignee: Karina Hauser
> Pig 12.0 Documentation
> ----------------------
>
> Key: PIG-3777
> URL: https://issues.apache.org/jira/browse/PIG-3777
> Project: Pig
> Issue Type: Wish
> Components: documentation
> Affects Versions: 0.12.0
> Reporter: Karina Hauser
> Assignee: Karina Hauser
> Priority: Trivial
> Fix For: 0.12.1, 0.13.0
>
> Attachments: PIG-3777-1.patch
>
> Original Estimate: 0.25h
> Remaining Estimate: 0.25h
>
> I think the example for SAMPLE is wrong
> In this example, a scalar expression is used (it will sample approximately 1000 records from the input).
> a = load 'a.txt';
> b = group a all;
> c = foreach b generate COUNT(a) as num_rows;
> e = sample d 1000/num_rows;
> There is no relation d and I get a "Projected field [num_rows] does not exist in schema" error, I think it need to be
> e = sample a 1000/c.numrows
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