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https://issues.apache.org/jira/browse/PIG-2359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13165022#comment-13165022
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Dmitriy V. Ryaboy commented on PIG-2359:
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Found a place where this breaks. InternalCachedBag (and presumably other cached
bags) use <code>t.write(out)<code> to spill to disk, and <code>t =
factory.newTuple(); t.readFields(in)<code> to read. This is a problem as it
assumes t will write itself in a format the default tuple returned by
factory.newTuple() will read. Seems like a straightforward fix would be to use
InterSedes to read, right? Any reason that wouldn't work?
> Support more efficient Tuples when schemas are known
> ----------------------------------------------------
>
> Key: PIG-2359
> URL: https://issues.apache.org/jira/browse/PIG-2359
> Project: Pig
> Issue Type: New Feature
> Reporter: Dmitriy V. Ryaboy
> Assignee: Dmitriy V. Ryaboy
> Attachments: PIG-2359.1.patch, PIG-2359.2.patch
>
>
> Pig Tuples have significant overhead due to the fact that all the fields are
> Objects.
> When a Tuple only contains primitive fields (ints, longs, etc), it's possible
> to avoid this overhead, which would result in significant memory savings.
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