Kibana TSVB shows keyword string "/" as "(empty)"

[hylowaker (JaeHeung Han)]

I loaded Metricbeat dashboards into Kibana.

The Disk Usage [Metricbeat System] ECS library shows Top 10 mount points with high disk usages.

I see an (empty) mount point, but the actual value of system.filesystem.mount_point field is /. Why is it displayed as empty?

Kibana version: 9.1.2
Metricbeat version: 9.2.4

[Tortoise]

Hello @hylowaker

Yes i have checked & see the same behavior. If we hover on the empty mount point we see /

We can create a custom view as well on Lens :

On increasing the / mount point i see both updated incase you plan to use a custom visualization:

Thanks!!

[Marco_Liberati]

There’s a similar existing issue: [TSVB] `/` in TSVB legend is converted to `(empty)` term · Issue #214067 · elastic/kibana · GitHub

Given there’s a solution using the Lens editor I’d say it’s best to migrate the TSVB visualization to it.