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-rw-r--r--libnetdata/facets/facets.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libnetdata/facets/facets.h b/libnetdata/facets/facets.h
index c0f7f80c8..796d15a04 100644
--- a/libnetdata/facets/facets.h
+++ b/libnetdata/facets/facets.h
@@ -3,6 +3,8 @@
#include "../libnetdata.h"
+#define FACET_VALUE_UNSET "-"
+
typedef enum __attribute__((packed)) {
FACET_KEY_OPTION_FACET = (1 << 0), // filterable values
FACET_KEY_OPTION_NO_FACET = (1 << 1), // non-filterable value