Diskio metrics not collected if there is not activity on disk

[jsoriano]

diskio events are lost as they cannot be serialized because of containing NaN values.

2018-11-16T12:34:28.986+0100	WARN	fileout/file.go:127	Failed to serialize the event: unsupported float value: NaN

For confirmed bugs, please report:

• Version: 6.5.0, 6.5.1
• Operating System: Linux
• Discuss Forum URL: https://discuss.elastic.co/t/system-diskio-obtaining-nan-failed-to-serialize-the-event-unsupported-float-value-nan/156877/3
• Steps to Reproduce: Enable diskio metricset

[Feder1co5oave]

+1 I'm seeing this issue too, especially on cloud VPSs.

[Moireabh]

Still seeing this on metricbeat-6.5.1-1

[jsoriano]

Yes, sorry, this will get fixed in 6.5.2.

[Moireabh]

Whens this getting released? As our dashboards look awful :D Cheers, J

[ryno83]

I have this since I upgrade to 6.5.1 with diskio enable.
ERROR elasticsearch/client.go:374 Failed to encode event: unsupported float value: NaN

Is it related to this issue? will it be fixed in 6.5.2 ?

[jsoriano]

@ryno83 if you are using the system diskio metricset then yes, this should get fixed with 6.5.2.