[APM] Show chart tooltip on hover even for empty buckets

[formgeist]

Summary

Related charts fix elastic/elastic-charts#950

We should default to show the tooltip at all times and display N/A in the time-series value if the bucket is empty (not 0).

Example hover interaction

[elasticmachine]

Pinging @elastic/apm-ui (Team:apm)

[formgeist]

@elastic/elastic-charts Pinging you here, but do you already have something in place that enables us to show the tooltip even if there's no available values for the bucket, like here in the case where we're syncing the tooltip, but one chart doesn't have any data in some areas. Or do you think this is a possible enhancement, then I'm happy to create a new issue in the charts repo.

Thanks

[markov00]

You are right, when there is no datapoint, the tooltip is not shown, we can add an option to show always the tooltip + a customizable message in this case.
Yes please open an issue in the chart repo and link this one, thanks

[formgeist]

@markov00 Great, I've opened a charts issue for adding such option elastic/elastic-charts#950

[formgeist]

This issue has been resolved by the charts team elastic/elastic-charts#950

[botelastic]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[formgeist]

Verified that we're still not showing the synced tooltip for "n/a" values

[markov00]

Verified that we're still not showing the synced tooltip for "n/a" values

Just to be clear, this behaviour needs to be activated on your hand, is not available by default in charts, see elastic/elastic-charts#1226

[formgeist]

@markov00 Thanks for clarifying, my comment was just an internal note for the team that the issue was still there - @cauemarcondes has already created a PR to fix the issue.