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The following commit(s) were added to refs/heads/metaclient by this push:
new 58a021cb9 Update Java Doc for RebalanceStrategy
58a021cb9 is described below
commit 58a021cb9874e01d1153a28295e0e90e0580ee57
Author: Junkai Xue <[email protected]>
AuthorDate: Mon Jan 8 11:05:41 2024 -0800
Update Java Doc for RebalanceStrategy
---
.../rebalancer/strategy/RebalanceStrategy.java | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git
a/helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/RebalanceStrategy.java
b/helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/RebalanceStrategy.java
index 39a1010b5..99c593485 100644
---
a/helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/RebalanceStrategy.java
+++
b/helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/RebalanceStrategy.java
@@ -35,10 +35,11 @@ public interface RebalanceStrategy<T extends
BaseControllerDataProvider> {
/**
* Perform the necessary initialization for the rebalance strategy object.
*
- * @param resourceName
- * @param partitions
- * @param states
- * @param maximumPerNode
+ * @param resourceName The resource for assignment mapping computation.
+ * @param partitions The partition names of the resource.
+ * @param states The state -> required state count mapping for
the resource, ordered by
+ * priority.
+ * @param maximumPerNode The maximum number of partitions that can be
assigned to a node.
*/
void init(String resourceName, final List<String> partitions,
final LinkedHashMap<String, Integer> states, int maximumPerNode);
@@ -46,10 +47,13 @@ public interface RebalanceStrategy<T extends
BaseControllerDataProvider> {
/**
* Compute the preference lists and (optional partition-state mapping) for
the given resource.
*
- * @param liveNodes
- * @param currentMapping
- * @param allNodes
- * @return
+ * @param liveNodes The list of live nodes names.
+ * @param currentMapping The current mapping of
partition->state->instance.
+ * @param allNodes The list of all node names. This could be
filtered for evacuation
+ * and swap operations.
+ * @param clusterData The cache of the cluster data snapshot from
Zookeeper.
+ * @return The computed IdealState with ListFields for
preference lists (optional)
+ * and MapFields for partition->state->instance
mapping (required).
*/
ZNRecord computePartitionAssignment(final List<String> allNodes, final
List<String> liveNodes,
final Map<String, Map<String, String>> currentMapping,
