nicktelford commented on code in PR #16922:
URL: https://github.com/apache/kafka/pull/16922#discussion_r1736192824
##########
streams/src/main/java/org/apache/kafka/streams/processor/internals/TaskManager.java:
##########
@@ -519,6 +563,33 @@ private void handleTasksPendingInitialization() {
}
}
+ private void handleInitialTaskReuse(final Map<TaskId, Set<TopicPartition>>
activeTasksToCreate,
+ final Map<TaskId, Set<TopicPartition>>
standbyTasksToCreate,
+ final Map<TaskId, RuntimeException>
failedTasks) {
+ final Map<Task, Set<TopicPartition>> initialStandbyTasksToRecycle =
assignInitialTasks(activeTasksToCreate, logPrefix, topologyMetadata,
changelogReader);
+ final Map<Task, Set<TopicPartition>> initialStandbyTasksToUse =
assignInitialTasks(standbyTasksToCreate, logPrefix, topologyMetadata,
changelogReader);
+
+ // if this was the last local thread to receive its assignment, close
all the remaining Tasks, as they are not needed
+ stateDirectory.closeInitialTasksIfLastAssginedThread();
+
+ // recycle the initial standbys to active, and remove them from the
set of actives that need to be created
+ if (!initialStandbyTasksToRecycle.isEmpty()) {
+ final Set<Task> tasksToCloseDirty = new HashSet<>();
Review Comment:
It looks like I actually had a bug here, which I believe I've fixed in
https://github.com/apache/kafka/pull/16922/commits/d326ea8142629200ab15c7f38a45e75e95738edd
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