GJL commented on a change in pull request #6464: [FLINK-9936][mesos] WIP
URL: https://github.com/apache/flink/pull/6464#discussion_r207461579
##########
File path:
flink-mesos/src/main/java/org/apache/flink/mesos/runtime/clusterframework/MesosResourceManager.java
##########
@@ -278,22 +267,76 @@ protected void initialize() throws
ResourceManagerException {
catch (IOException e) {
throw new ResourceManagerException("Unable to configure
the artifact server with TaskManager artifacts.", e);
}
+ }
- // begin scheduling
- connectionMonitor.tell(new ConnectionMonitor.Start(),
selfActor);
- schedulerDriver.start();
+ @Override
+ protected CompletableFuture<Void> prepareLeadershipAsync() {
+ Preconditions.checkState(initializedMesosConfig != null);
+
+ return clearStateFuture
+ .thenRunAsync(() -> {
+ schedulerDriver =
initializedMesosConfig.createDriver(
+ new
MesosResourceManagerSchedulerCallback(),
+ false);
+
+ // create supporting actors
+ connectionMonitor = createConnectionMonitor();
+ launchCoordinator =
createLaunchCoordinator(schedulerDriver, selfActor);
+ reconciliationCoordinator =
createReconciliationCoordinator(schedulerDriver);
+ taskMonitor =
createTaskMonitor(schedulerDriver);
+ }, getMainThreadExecutor())
+ .thenCombineAsync(getWorkersAsync(), (ignored,
tasksFromPreviousAttempts) -> {
+ // recover state
+ recoverWorkers(tasksFromPreviousAttempts);
+
+ // begin scheduling
+ connectionMonitor.tell(new
ConnectionMonitor.Start(), selfActor);
+ schedulerDriver.start();
+
+ LOG.info("Mesos resource manager started.");
+ return null;
+ }, getMainThreadExecutor());
+ }
- LOG.info("Mesos resource manager initialized.");
+ @Override
+ protected void clearState() {
+ schedulerDriver.stop(true);
+
+ clearStateFuture = stopSupportingActorsAsync().thenRunAsync(()
-> {
+ workersInNew.clear();
+ workersInLaunch.clear();
+ workersBeingReturned.clear();
Review comment:
That should be safe to do.
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