kaushik-develop commented on a change in pull request #12178:
URL: https://github.com/apache/pulsar/pull/12178#discussion_r719766751
##########
File path:
pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/SchedulerManager.java
##########
@@ -403,6 +548,82 @@ private void scheduleCompaction(ScheduledExecutorService
executor, long schedule
}
}
+ @VisibleForTesting
+ List<Assignment> getCurrentPostDrainAssignments() {
+ return currentPostDrainAssignments;
+ }
+
+ @VisibleForTesting
+ void clearCurrentPostDrainAssignments() {
+ currentPostDrainAssignments = null;
+ }
+
+ @VisibleForTesting
+ List<Assignment> invokeDrain(String workerId) {
+
+ long startTime = System.nanoTime();
+
+ Set<String> availableWorkers = getCurrentAvailableWorkers();
+
+ // workerIdToAssignments is a map of the form {workerId :
{FullyQualifiedInstanceId : Assignment}}
+ Map<String, Map<String, Assignment>> workerIdToAssignments =
functionRuntimeManager.getCurrentAssignments();
+
+ // initialize stats collection
+ SchedulerStats schedulerStats = new
SchedulerStats(workerIdToAssignments, availableWorkers);
+
+ boolean drainSuccessful = false;
+ List<Assignment> postDrainAssignments = null;
+
+ try {
+ // The worker was checked to be among the available ones, by the
caller.
+ Preconditions.checkState(availableWorkers.contains(workerId));
+
+ drainOpStatusMap.put(workerId, DrainOpStatus.DrainInProgress);
+
+ val workerRemovealSuccessful = availableWorkers.remove(workerId);
+ Preconditions.checkState(workerRemovealSuccessful);
+
+ List<FunctionMetaData> allFunctions =
functionMetaDataManager.getAllFunctionMetaData();
+ Map<String, Function.Instance> allInstances =
+ computeAllInstances(allFunctions,
functionRuntimeManager.getRuntimeFactory().externallyManaged());
+
+ // Pretend that current assignments is empty, and get the
instances to assign.
+ Pair<List<Function.Instance>, List<Assignment>> instancesToAssign
+ = getUnassignedFunctionInstances(null, allInstances);
Review comment:
Sounds fair. I will fix.
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