[PIG-1429] Add Boolean Data Type to Pig - ASF JIRA

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Introduce boolean as first class Pig data type. You can use "boolean" anywhere Pig expecting a data type. For example:
a = load 'input' as (a0:boolean, a1:tuple(a10:boolean, a11:int), a2);
b = foreach a generate a0, a1, (boolean)a2;
c = group b by a2; -- group by a boolean field

When UTF8StorageConvert converts bytes into boolean, it expects "true" (ignore case) to be TRUE and "false" (ignore case) to be FALSE, otherwise, we get null. For example:
a = load 'input' as (a0:boolean);

input file:
true -- we get TRUE
True -- we get TRUE
FALSE -- we get FALSE
1 -- we get null

We also change the interface LoadCaster/StoreCaster to include boolean type.

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Introduce boolean as first class Pig data type. You can use "boolean" anywhere Pig expecting a data type. For example: a = load 'input' as (a0:boolean, a1:tuple(a10:boolean, a11:int), a2); b = foreach a generate a0, a1, (boolean)a2; c = group b by a2; -- group by a boolean field When UTF8StorageConvert converts bytes into boolean, it expects "true" (ignore case) to be TRUE and "false" (ignore case) to be FALSE, otherwise, we get null. For example: a = load 'input' as (a0:boolean); input file: true -- we get TRUE True -- we get TRUE FALSE -- we get FALSE 1 -- we get null We also change the interface LoadCaster/StoreCaster to include boolean type.
Tags:
boolean type pig

Pig needs a Boolean data type. Pig-1097 is dependent on doing this.

I volunteer. Is there anything beyond the work in src/org/apache/pig/data/ plus unit tests to make this work?

This is a candidate project for Google summer of code 2011. More information about the program can be found at http://wiki.apache.org/pig/GSoc2011

blocks

PIG-1097 Pig do not support group by boolean type

is blocked by

PIG-1314 Add DateTime Support to Pig

relates to

PIG-1314 Add DateTime Support to Pig

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