junrao commented on a change in pull request #10184:
URL: https://github.com/apache/kafka/pull/10184#discussion_r587131740
##########
File path:
metadata/src/main/java/org/apache/kafka/controller/ReplicationControlManager.java
##########
@@ -349,6 +359,29 @@ public void replay(PartitionChangeRecord record) {
log.debug("Applied ISR change record: {}", record.toString());
}
+ public void replay(RemoveTopicRecord record) {
+ // Remove this topic from the topics map and the topicsByName map.
+ TopicControlInfo topic = topics.remove(record.topicId());
+ if (topic == null) {
+ throw new RuntimeException("Can't find topic with ID " +
record.topicId() +
+ " to remove.");
+ }
+ topicsByName.remove(topic.name);
+
+ // Delete the configurations associated with this topic.
+ configurationControl.deleteTopicConfigs(topic.name);
+
+ // Remove the entries for this topic in brokersToIsrs.
+ for (PartitionControlInfo partition : topic.parts.values()) {
+ for (int i = 0; i < partition.isr.length; i++) {
+ brokersToIsrs.removeTopicEntryForBroker(topic.id,
partition.isr[i]);
+ }
+ }
+ brokersToIsrs.removeTopicEntryForBroker(topic.id, NO_LEADER);
Review comment:
Got it. The following comment confirmed this.
```
/**
* A map of broker IDs to the partitions that the broker is in the ISR
for.
* Partitions with no isr members appear in this map under id NO_LEADER.
*/
private final TimelineHashMap<Integer, TimelineHashMap<Uuid, int[]>>
isrMembers;
```
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