[HIVEMALL-163] Add IS_INFINITE, IS_FINITE, IS_NAN functions

• Type: Wish
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.2
• Assignee: Makoto Yui
• Reporter: Makoto Yui
• Created: 19/Dec/17 08:55
• Updated: 04/Sep/18 06:59
• Resolved: 04/Sep/18 06:59

Description

Support floating point functions as in PrestoDB.

Floating Point Functions
infinity() → double
Returns the constant representing positive infinity.

is_finite(x) → boolean
Determine if x is finite.

is_infinite(x) → boolean
Determine if x is infinite.

is_nan(x) → boolean
Determine if x is not-a-number.

nan() → double
Returns the constant representing not-a-number.

https://github.com/brndnmtthws/facebook-hive-udfs/blob/master/src/main/java/com/facebook/hive/udf/UDFIsFinite.java

Issue Links

• relates to: HIVEMALL-178 NaN/missing value/null values handling in RandomForest
• links to: GitHub Pull Request #160