symious commented on code in PR #6050:
URL: https://github.com/apache/ozone/pull/6050#discussion_r1461606366
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hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/balancer/ContainerBalancerSelectionCriteria.java:
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@@ -88,19 +93,25 @@ private boolean
isContainerReplicatingOrDeleting(ContainerID containerID) {
* 5. Container should be closed.
* 6. If the {@link LegacyReplicationManager} is enabled, then the container
should not be an EC container.
* @param node DatanodeDetails for which to find candidate containers.
- * @return NavigableSet of candidate containers that satisfy the criteria.
+ * @return Set of candidate containers that satisfy the criteria.
*/
- public NavigableSet<ContainerID> getCandidateContainers(
+ public Set<ContainerID> getCandidateContainers(
DatanodeDetails node, long sizeMovedAlready) {
- NavigableSet<ContainerID> containerIDSet =
- new TreeSet<>(orderContainersByUsedBytes().reversed());
try {
- containerIDSet.addAll(nodeManager.getContainers(node));
+ // Initialize containerSet for node
+ if (!setMap.containsKey(node)) {
Review Comment:
I think the original idea is to do the balancer faster, for an iteration of
1000GB size limit, you can move 200 containers of 5 GB, or 2000 containers of
500MB, and they are choosing a quicker option here.
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