jerryshao commented on code in PR #9854:
URL: https://github.com/apache/gravitino/pull/9854#discussion_r2753012385
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core/src/main/java/org/apache/gravitino/listener/api/event/ListTopicFailureEvent.java:
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@@ -40,6 +41,7 @@ public final class ListTopicFailureEvent extends
TopicFailureEvent {
*/
public ListTopicFailureEvent(String user, Namespace namespace, Exception
exception) {
super(user, NameIdentifier.of(namespace.levels()), exception);
+ Preconditions.checkNotNull(namespace, "namespace must not be null");
Review Comment:
Shall we move this line above the `super(...)`? Also, it would be better to
use `Preconditions.checkArguments`, using `Preconditions.checkNotNull` will
throw an NPE, which is not what we wanted.
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