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https://issues.apache.org/jira/browse/PIG-788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708274#action_12708274
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Santhosh Srinivasan commented on PIG-788:
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-1 on this jira for the following reasons:
1. floats take 4 bytes as opposed to doubles that take 8 bytes
2. Floating point operations are much faster than operations on doubles
3. Issue of breaking backward compatibility at the cost of slower performance
(and not faster performance)
4. A storage layer should not dictate how a higher layer evolves.
> Proposal to remove float from Pig data types
> --------------------------------------------
>
> Key: PIG-788
> URL: https://issues.apache.org/jira/browse/PIG-788
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Affects Versions: 0.2.0
> Reporter: Alan Gates
> Assignee: Alan Gates
>
> Pig would like to use the new Hadoop Avro serialization package to pass data
> between MR jobs, and eventually between Pig and UDFs that are not written in
> Java. Avro will not be supporting the float data type, but only double (see
> AVRO-17). Pig currently support both float and double. Double is the
> default floating point type (so if the user says x + 1.0, 1.0 is taken to be
> a double, not a float). Float was initially included in the list of Pig
> types because Hadoop supported it as one of the Writable types, and we were
> trying to make sure all of Hadoop's writable types could be represented in
> Pig.
> In practice we do not see anyone using the float type. In order to be able
> to easily use Avro I propose dropping the float type.
> Please speak up if you are using the float type and you have a compelling
> reason not to use double.
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