MarkGaox commented on code in PR #2886:
URL: https://github.com/apache/helix/pull/2886#discussion_r1731588044
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helix-rest/src/main/java/org/apache/helix/rest/clusterMaintenanceService/MaintenanceManagementService.java:
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@@ -472,9 +472,15 @@ private MaintenanceManagementInstanceInfo
takeFreeSingleInstanceHelper(String cl
private List<String> batchHelixInstanceStoppableCheck(String clusterId,
Collection<String> instances, Map<String, StoppableCheck>
finalStoppableChecks,
Set<String> toBeStoppedInstances) {
+
+ // Perform all but min_active replicas check in parallel
Map<String, Future<StoppableCheck>> helixInstanceChecks =
instances.stream().collect(
Collectors.toMap(Function.identity(), instance -> POOL.submit(
() -> performHelixOwnInstanceCheck(clusterId, instance,
toBeStoppedInstances))));
+
+ // Perform min_active replicas check sequentially
+ addInstanceMinActiveReplicaCheck(helixInstanceChecks,
toBeStoppedInstances);
Review Comment:
Sounds good, let's keep the current order. What do you think about adding
this check to the filterInstancesForNextCheck() method? Otherwise, we would end
up with two identical methods, which seems redundant.
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