fix: add null check to exemplar data (#5202)

Signed-off-by: Thomas Mota <tmm@danskecommodities.com>
thanos-io · Mar 2, 2022 · efcdf5e · efcdf5e
1 parent 7528375
commit efcdf5e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/pkg/exemplars/exemplars.go b/pkg/exemplars/exemplars.go
@@ -89,6 +89,10 @@ func (rr *GRPCClient) Exemplars(ctx context.Context, req *exemplarspb.ExemplarsR
 		return nil, nil, errors.Wrap(err, "proxy Exemplars")
 	}
 
+	if resp.data == nil {
+		return make([]*exemplarspb.ExemplarData, 0), resp.warnings, nil
+	}
+
 	resp.data = dedupExemplarsResponse(resp.data, rr.replicaLabels)
 	return resp.data, resp.warnings, nil
 }