Werk #5273: Fix display of CustomGraphs for metrics without current performance data

Komponente Metrics system
Titel Fix display of CustomGraphs for metrics without current performance data
Datum 15.02.2018
Level Kleine Änderung
Klasse Bugfix
Kompatibilität Kompatibel - benötigt kein manuelles Eingreifen
Checkmk versions & editions
1.5.0i3 Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.4.0p25 Checkmk Enterprise (CEE), Checkmk MSP (CME)

The graphing system was unable to display metrics within a custom graph if the corresponding performance-data is currently not available. This would for example be the case if a check isin a temporary "Unknown" state.

The rendering now correctly relies on the corresponding historical metric data instead of discarding the metric completely.

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