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From "Dmitriy V. Ryaboy (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-2359) Support more efficient Tuples when schemas are known
Date Tue, 17 Jan 2012 01:41:38 GMT

     [ https://issues.apache.org/jira/browse/PIG-2359?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dmitriy V. Ryaboy updated PIG-2359:
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.11
     Release Note: 
newTupleForSchema(Schema s) and newTupleForSchema(byte... types) methods are introduced to
TupleFactory, allowing Pig to choose optimized Tuple implementations for specific schemas,
when those are available.

Two optimized implementations are introduced:
- single-value Tuples (tuples which only hold a single int, double, String, etc
- primitive-value Tuples (tuples which only hold values that can be represented by a fixed-width
datatype in Java: int, long, double, boolean, float).

Using such tuples can result in significant memory utilization improvements.
           Status: Resolved  (was: Patch Available)

Committed to trunk.
                
> 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
>             Fix For: 0.11
>
>         Attachments: PIG-2359.1.patch, PIG-2359.2.patch, PIG-2359.3.patch, PIG-2359.4.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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