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Posted to jira@kafka.apache.org by GitBox <gi...@apache.org> on 2022/09/07 12:37:23 UTC
[GitHub] [kafka] cadonna commented on a diff in pull request #12600: KAFKA-10199: Remove and suspend tasks in the state updater on revocation
cadonna commented on code in PR #12600:
URL: https://github.com/apache/kafka/pull/12600#discussion_r964788770
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streams/src/main/java/org/apache/kafka/streams/processor/internals/TaskManager.java:
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@@ -421,73 +421,120 @@ private void classifyTasksWithoutStateUpdater(final Map<TaskId, Set<TopicPartiti
}
}
- private void classifyRunningTasks(final Map<TaskId, Set<TopicPartition>> activeTasksToCreate,
- final Map<TaskId, Set<TopicPartition>> standbyTasksToCreate,
- final Map<Task, Set<TopicPartition>> tasksToRecycle,
- final Set<Task> tasksToCloseClean) {
+ private void classifyRunningAndSuspendedTasks(final Map<TaskId, Set<TopicPartition>> activeTasksToCreate,
+ final Map<TaskId, Set<TopicPartition>> standbyTasksToCreate,
+ final Map<Task, Set<TopicPartition>> tasksToRecycle,
+ final Set<Task> tasksToCloseClean) {
for (final Task task : tasks.allTasks()) {
+ if (!task.isActive()) {
+ throw new IllegalStateException("Standby tasks should only be managed by the state updater");
+ }
final TaskId taskId = task.id();
if (activeTasksToCreate.containsKey(taskId)) {
- if (task.isActive()) {
- final Set<TopicPartition> topicPartitions = activeTasksToCreate.get(taskId);
- if (tasks.updateActiveTaskInputPartitions(task, topicPartitions)) {
- task.updateInputPartitions(topicPartitions, topologyMetadata.nodeToSourceTopics(task.id()));
- }
- task.resume();
- } else {
- throw new IllegalStateException("Standby tasks should only be managed by the state updater");
- }
+ handleReAssignedActiveTask(task, activeTasksToCreate.get(taskId));
activeTasksToCreate.remove(taskId);
} else if (standbyTasksToCreate.containsKey(taskId)) {
- if (!task.isActive()) {
- throw new IllegalStateException("Standby tasks should only be managed by the state updater");
- } else {
- tasksToRecycle.put(task, standbyTasksToCreate.get(taskId));
- }
+ tasksToRecycle.put(task, standbyTasksToCreate.get(taskId));
standbyTasksToCreate.remove(taskId);
} else {
tasksToCloseClean.add(task);
}
}
}
+ private void handleReAssignedActiveTask(final Task task,
+ final Set<TopicPartition> inputPartitions) {
+ if (tasks.updateActiveTaskInputPartitions(task, inputPartitions)) {
+ task.updateInputPartitions(inputPartitions, topologyMetadata.nodeToSourceTopics(task.id()));
+ }
+ task.resume();
+ if (task.state() == State.RESTORING) {
+ handleReAssignedRevokedActiveTask(task);
+ }
+ }
+
+ private void handleReAssignedRevokedActiveTask(final Task task) {
+ tasks.removeTask(task);
+ stateUpdater.add(task);
+ }
+
private void classifyTasksWithStateUpdater(final Map<TaskId, Set<TopicPartition>> activeTasksToCreate,
final Map<TaskId, Set<TopicPartition>> standbyTasksToCreate,
final Map<Task, Set<TopicPartition>> tasksToRecycle,
final Set<Task> tasksToCloseClean) {
- classifyRunningTasks(activeTasksToCreate, standbyTasksToCreate, tasksToRecycle, tasksToCloseClean);
+ classifyRunningAndSuspendedTasks(activeTasksToCreate, standbyTasksToCreate, tasksToRecycle, tasksToCloseClean);
for (final Task task : stateUpdater.getTasks()) {
final TaskId taskId = task.id();
- final Set<TopicPartition> topicPartitions = activeTasksToCreate.get(taskId);
if (activeTasksToCreate.containsKey(taskId)) {
+ final Set<TopicPartition> inputPartitions = activeTasksToCreate.get(taskId);
if (task.isActive()) {
- if (!task.inputPartitions().equals(topicPartitions)) {
- stateUpdater.remove(taskId);
- tasks.addPendingTaskToUpdateInputPartitions(taskId, topicPartitions);
+ if (tasks.removePendingActiveTaskToSuspend(taskId)) {
+ prepareRevokedActiveTaskForResuming(task, inputPartitions);
+ } else {
+ prepareReAssignedActiveTaskInRestorationForReUse(task, inputPartitions);
}
} else {
- stateUpdater.remove(taskId);
- tasks.addPendingTaskToRecycle(taskId, topicPartitions);
+ prepareRunningStandbyTaskForRecycling(taskId, inputPartitions);
}
activeTasksToCreate.remove(taskId);
} else if (standbyTasksToCreate.containsKey(taskId)) {
+ final Set<TopicPartition> topicPartitions = standbyTasksToCreate.get(taskId);
if (!task.isActive()) {
- if (!task.inputPartitions().equals(topicPartitions)) {
- stateUpdater.remove(taskId);
- tasks.addPendingTaskToUpdateInputPartitions(taskId, topicPartitions);
- }
+ prepareReAssignedStandbyTaskForRunning(task, topicPartitions);
} else {
- stateUpdater.remove(taskId);
- tasks.addPendingTaskToRecycle(taskId, topicPartitions);
+ prepareRevokedActiveTaskForRecycling(taskId, topicPartitions);
}
standbyTasksToCreate.remove(taskId);
} else {
- stateUpdater.remove(taskId);
- tasks.addPendingTaskToCloseClean(taskId);
+ prepareUnusedTaskInStateUpdaterForCleanClose(taskId);
}
}
Review Comment:
This is the part that needs most attention while reviewing.
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