yuqi1129 commented on issue #8743:
URL: https://github.com/apache/gravitino/issues/8743#issuecomment-3384030972
Yeah, you are right. The problem lies in
```java
public void put(
NameIdentifier nameIdentifier, Entity.EntityType type,
EntityCacheRelationKey key) {
EntityCacheKey entityCacheKey = EntityCacheKey.of(nameIdentifier, type);
String strEntityCacheKey = entityCacheKey.toString();
// reverseIndex.getValuesForKeysStartingWith(strEntityCacheKey) is
time-consuming. If there is no need to measure the size //of
entityKeys, we can remove this logic. `Lists.newArrayList()` will repeatedly
call the iterator for `reverseIndex` and it
// indeed takes too much time.
List<EntityCacheKey> entityKeys =
Lists.newArrayList(reverseIndex.getValuesForKeysStartingWith(strEntityCacheKey));
String strEntityCacheKeySerialNumber =
String.format("%s-%d", strEntityCacheKey, entityKeys.size());
reverseIndex.put(strEntityCacheKeySerialNumber, key);
}
```
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