[CASSANDRA-14377] Returning invalid JSON for NaN and Infinity float values

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.2.14, 3.0.18, 3.11.4, 4.0-alpha1, 4.0
• Component/s: Legacy/CQL
• Severity: Low
• Assignee: Benjamin Lerer
• Reporter: Piotr Sarna

Authors

Benjamin Lerer

• Created: 11/Apr/18 13:11
• Updated: 15/May/20 08:04
• Resolved: 02/Aug/18 09:36

Description

After inserting special float values like NaN and Infinity into a table:

CREATE TABLE testme (t1 bigint, t2 float, t3 float, PRIMARY KEY (t1));
INSERT INTO testme (t1, t2, t3) VALUES (7, NaN, Infinity);

and returning them as JSON...

cqlsh:demodb> select json * from testme;
 [json]
--------------------------------------
 {"t1": 7, "t2": NaN, "t3": Infinity}

 

... the result will not be validated (e.g. with https://jsonlint.com/ ) because neither NaN nor Infinity is a valid JSON value. The consensus seems to be returning JSON's `null` in these cases, based on this article https://stackoverflow.com/questions/1423081/json-left-out-infinity-and-nan-json-status-in-ecmascript and other similar ones.