Github user bdeggleston commented on a diff in the pull request:
https://github.com/apache/cassandra/pull/224#discussion_r194581549
--- Diff: src/java/org/apache/cassandra/locator/ReplicaSet.java ---
@@ -0,0 +1,156 @@
+/*
+ * 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.cassandra.locator;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Sets;
+
+public class ReplicaSet extends Replicas
+{
+ static final ReplicaSet EMPTY = new ReplicaSet(ImmutableSet.of());
+
+ private final Set<Replica> replicaSet;
+
+ public ReplicaSet()
+ {
+ this(new HashSet<>());
+ }
+
+ public ReplicaSet(int expectedSize)
+ {
+ this(Sets.newHashSetWithExpectedSize(expectedSize));
+ }
+
+ public ReplicaSet(Replicas replicas)
+ {
+ this(Sets.newHashSetWithExpectedSize(replicas.size()));
+ Iterables.addAll(replicaSet, replicas);
+ }
+
+ private ReplicaSet(Set<Replica> replicaSet)
+ {
+ this.replicaSet = replicaSet;
+ }
+
+ public boolean equals(Object o)
+ {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+ ReplicaSet that = (ReplicaSet) o;
+ return Objects.equals(replicaSet, that.replicaSet);
+ }
+
+ public int hashCode()
+ {
+ return replicaSet.hashCode();
+ }
+
+ @Override
+ public String toString()
+ {
+ return replicaSet.toString();
+ }
+
+ @Override
+ public boolean add(Replica replica)
+ {
+ return replicaSet.add(replica);
+ }
+
+ @Override
+ public void addAll(Iterable<Replica> replicas)
+ {
+ Iterables.addAll(replicaSet, replicas);
+ }
+
+ @Override
+ public void removeEndpoint(InetAddressAndPort endpoint)
+ {
+ for (Replica replica: replicaSet)
--- End diff --
fixed
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