ganglia/ganglia-web — pull request #141 by cowyn (2012-11-14 08:42:11+00:00)
Title: JSON should return the TRUE value by rrdtool

Currently JSON outputs every single value as float.

So, if the metric actually has a value of "NaN" in RRD, the downstream applications/tools could get a misled value "0". "NaN" is not the same as "0", seriously.

BTW: Our Nagios plugins are very happy with this patch on monitoring a 3,000+ machines cluster.