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

Signed-off-by: Thomas Mota <[email protected]>
matej-g · Mar 18, 2022 · 6b80a50 · 6b80a50
1 parent 6266ce7
commit 6b80a50
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
 }