[Graphbolt]Throw exception when id not found (#6128)

1e16e4ca · peizhou001 · GitHub · b328b85f · 1e16e4ca
Unverified Commit 1e16e4ca authored Aug 10, 2023 by peizhou001 Committed by GitHub Aug 10, 2023
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graphbolt/src/concurrent_id_hash_map.cc graphbolt/src/concurrent_id_hash_map.cc +3 -0

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--- a/graphbolt/src/concurrent_id_hash_map.cc
+++ b/graphbolt/src/concurrent_id_hash_map.cc
@@ -160,6 +160,9 @@ inline IdType ConcurrentIdHashMap<IdType>::MapId(IdType id) const {
    Next(&pos, &delta);
    key = hash_map_data[getKeyIndex(pos)];
  }
+  if (key == empty_key) {
+    throw std::out_of_range("Id not found: " + std::to_string(id));
+  }
  return hash_map_data[getValueIndex(pos)];
 }