Github user mcvsubbu commented on a diff in the pull request:
https://github.com/apache/helix/pull/145#discussion_r174308429
--- Diff:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/constraint/PartitionWeightAwareEvennessConstraint.java
---
@@ -0,0 +1,94 @@
+package org.apache.helix.controller.rebalancer.constraint;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import
org.apache.helix.api.rebalancer.constraint.AbstractRebalanceSoftConstraint;
+import
org.apache.helix.api.rebalancer.constraint.dataprovider.CapacityProvider;
+import
org.apache.helix.api.rebalancer.constraint.dataprovider.PartitionQuotaProvider;
+import org.apache.helix.controller.common.ResourcesStateMap;
+import org.apache.helix.controller.rebalancer.util.ResourceUsageCalculator;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class PartitionWeightAwareEvennessConstraint extends
AbstractRebalanceSoftConstraint {
+ private final int _weight;
+ private final PartitionQuotaProvider _partitionQuotaProvider;
+ private final CapacityProvider _capacityProvider;
+ // Use to track any assignments that are proposed during the rebalance
process.
+ // Note these assignments are not reflected in providers.
+ private final Map<String, Integer> _pendingUsage;
+
+ public PartitionWeightAwareEvennessConstraint(PartitionQuotaProvider
partitionQuotaProvider,
+ CapacityProvider capacityProvider, int weight) {
+ _partitionQuotaProvider = partitionQuotaProvider;
--- End diff --
add super()
---
