Proposal to remove float from Pig data types
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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
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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