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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (PIG-49) optimize bag usage
Date Tue, 20 Jan 2009 23:01:02 GMT

     [ https://issues.apache.org/jira/browse/PIG-49?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Olga Natkovich resolved PIG-49.
-------------------------------

    Resolution: Won't Fix

> optimize bag usage
> ------------------
>
>                 Key: PIG-49
>                 URL: https://issues.apache.org/jira/browse/PIG-49
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Olga Natkovich
>
> (1) Currently, we always bring the entire bag into memory even though in most cases we
just need to stream through it. This is very inefficient in terms of memory and CPU usage.
> (2) If we are doing multiple computations on the same group, we iterate over the bag
that represents the group several times. This is very inefficient especially for spilled bags.

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