hadoop-pig-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1143) Poisson Sample Loader should compute the number of samples required only once
Date Fri, 11 Dec 2009 01:39:18 GMT

    [ https://issues.apache.org/jira/browse/PIG-1143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12789069#action_12789069
] 

Thejas M Nair commented on PIG-1143:
------------------------------------

If the data is going to be in BinStorage, my comments regarding the approach for this patch
are not applicable. But the patch does not need to be ported to load-store redesign branch.


> Poisson Sample Loader should compute the number of samples required only once
> -----------------------------------------------------------------------------
>
>                 Key: PIG-1143
>                 URL: https://issues.apache.org/jira/browse/PIG-1143
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Sriranjan Manjunath
>            Assignee: Sriranjan Manjunath
>
> The current poisson sampler forces each of the maps to compute the sample number. This
is redundant and causes issues when a large directory is specified in the join. The sampler
should be changed to calculate the sample count only once and this information should be shared
with the remaining mappers.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message