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Posted to dev@pig.apache.org by "Cheolsoo Park (JIRA)" <ji...@apache.org> on 2014/02/18 15:20:20 UTC
[jira] [Updated] (PIG-3747) Update skewed join documentation
[ https://issues.apache.org/jira/browse/PIG-3747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cheolsoo Park updated PIG-3747:
-------------------------------
Status: Patch Available (was: Open)
> Update skewed join documentation
> --------------------------------
>
> Key: PIG-3747
> URL: https://issues.apache.org/jira/browse/PIG-3747
> Project: Pig
> Issue Type: Bug
> Components: documentation
> Reporter: Cheolsoo Park
> Assignee: Cheolsoo Park
> Fix For: 0.13.0
>
> Attachments: PIG-3747-1.patch
>
>
> While working on Tez skewed join, I found two problems with the skewed join documentation-
> # The following is misleading because skewed join also works with left, right, and full outer joins.
> {quote}
> Skewed join works with two-table inner join.
> {quote}
> # In two-way join, the 1st table must be the skewed one because Pig samples on that. But this is not mentioned anywhere.
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