qqu0127 commented on code in PR #2102:
URL: https://github.com/apache/helix/pull/2102#discussion_r876116083
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helix-core/src/main/java/org/apache/helix/task/assigner/ThreadCountBasedTaskAssigner.java:
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@@ -74,19 +75,16 @@ public Map<String, TaskAssignResult>
assignTasks(Iterable<AssignableInstance> as
public Map<String, TaskAssignResult> assignTasks(
AssignableInstanceManager assignableInstanceManager, Collection<String>
instances,
Iterable<TaskConfig> tasks, String quotaType) {
- Iterable<AssignableInstance> assignableInstances = new HashSet<>();
+ Set<AssignableInstance> assignableInstances = new HashSet<>();
// Only add the AssignableInstances that are also in instances
for (String instance : instances) {
- ((HashSet<AssignableInstance>) assignableInstances)
- .add(assignableInstanceManager.getAssignableInstance(instance));
+
assignableInstances.add(assignableInstanceManager.getAssignableInstance(instance));
}
if (tasks == null || !tasks.iterator().hasNext()) {
- logger.warn("No task to assign!");
return Collections.emptyMap();
}
- if (assignableInstances == null ||
!assignableInstances.iterator().hasNext()) {
- logger.warn("No instance to assign!");
+ if (assignableInstances.isEmpty()) {
Review Comment:
It's never null, see `Set<AssignableInstance> assignableInstances = new
HashSet<>();` in line 78
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