Logstash plugin 0.5 fraction on number field

With logstash google pub/sub output plugin..

How do you set :

delay_threshold_secs => "0.5"

?

If I set to 1.x or 2.x, it'll work, but for 0.x it'll never work, so I guess it's just a matter of syntax error..

The pubsub output calls the .ofSeconds method, which sets the fractional part of the second to zero. 2.x is 2 etc.

As far as I know, logstash does not support any Java versions that would require a JSR-310 backport, so the output could be updated not to require it. But fixing that would not fix this.