fix(shard distributor): log invalid shard load

Signed-off-by: Andreas Holt <[email protected]>
Signed-off-by: Theis Randeris Mathiassen <[email protected]>

Author: AndreasHolt

service/sharddistributor/store/etcd/executorstore/etcdstore.go

@@ -183,6 +183,12 @@ func (s *executorStoreImpl) updateShardStatisticsFromHeartbeat(ctx context.Conte
 
 		load := report.ShardLoad
 		if math.IsNaN(load) || math.IsInf(load, 0) {
+			s.logger.Warn(
+				"invalid shard load reported; skipping EWMA update",
+				tag.ShardNamespace(namespace),
+				tag.ShardExecutor(executorID),
+				tag.ShardKey(shardID),
+			)
 			continue
 		}