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From GitBox <...@apache.org>
Subject [GitHub] [incubator-pinot] Jackie-Jiang commented on a change in pull request #5046: Re-design the broker routing
Date Fri, 07 Feb 2020 23:29:16 GMT
Jackie-Jiang commented on a change in pull request #5046: Re-design the broker routing
URL: https://github.com/apache/incubator-pinot/pull/5046#discussion_r376654708
 
 

 ##########
 File path: pinot-broker/src/main/java/org/apache/pinot/broker/routing/v2/instanceselector/ReplicaGroupInstanceSelector.java
 ##########
 @@ -0,0 +1,62 @@
+/**
+ * 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.
+ */
+package org.apache.pinot.broker.routing.v2.instanceselector;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.apache.pinot.common.metrics.BrokerMetrics;
+import org.apache.pinot.common.utils.HashUtil;
+
+
+/**
+ * Instance selector for replica-group routing strategy.
+ * <p>The selection algorithm will always evenly distribute the traffic to all replicas
of each segment, and will select
+ * the same replica id for all segments with the same number of replicas. The algorithm is
very light-weight and will
 
 Review comment:
   Yes, but no guarantee on the number of replicas up in external view

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