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https://issues.apache.org/jira/browse/KAFKA-14170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Akhilesh Chaganti resolved KAFKA-14170.
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Resolution: Fixed
> KRaft Controller: Possible NPE when we remove topics with any offline
> partitions in the cluster
> -----------------------------------------------------------------------------------------------
>
> Key: KAFKA-14170
> URL: https://issues.apache.org/jira/browse/KAFKA-14170
> Project: Kafka
> Issue Type: Bug
> Components: kraft
> Affects Versions: 3.3
> Reporter: Akhilesh Chaganti
> Assignee: Akhilesh Chaganti
> Priority: Blocker
> Fix For: 3.3
>
>
> When we remove a topic, it goes through the following function in KRaft
> Controller replay method for RemoveTopicRecord:
> {code:java}
> void removeTopicEntryForBroker(Uuid topicId, int brokerId) {
> Map<Uuid, int[]> topicMap = isrMembers.get(brokerId);
> if (topicMap != null) {
> if (brokerId == NO_LEADER) {
> offlinePartitionCount.set(offlinePartitionCount.get() -
> topicMap.get(topicId).length);
> }
> topicMap.remove(topicId);
> }
> } {code}
> If the broker has any offline partitions but doesn't have offline partitions
> for the topic we're deleting, the above code will run into NPE because we
> directly access the `topicMap.get(topicId).length`
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