Github user bdeggleston commented on a diff in the pull request:

    https://github.com/apache/cassandra/pull/224#discussion_r189092409
  
    --- Diff: src/java/org/apache/cassandra/locator/ReplicaList.java ---
    @@ -0,0 +1,244 @@
    +/*
    + * 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.ArrayList;
    +import java.util.Collection;
    +import java.util.Comparator;
    +import java.util.Iterator;
    +import java.util.List;
    +import java.util.Objects;
    +import java.util.function.Predicate;
    +
    +import com.google.common.collect.ImmutableList;
    +import com.google.common.collect.Iterables;
    +
    +public class ReplicaList extends Replicas
    +{
    +    static final ReplicaList EMPTY = new ReplicaList(ImmutableList.of());
    +
    +    private final List<Replica> replicaList;
    +
    +    public ReplicaList()
    +    {
    +        replicaList = new ArrayList<>();
    +    }
    +
    +    public ReplicaList(int capacity)
    +    {
    +        replicaList = new ArrayList<>(capacity);
    +    }
    +
    +    public ReplicaList(ReplicaList from)
    +    {
    +        replicaList = new ArrayList<>(from.replicaList);
    +    }
    +
    +    public ReplicaList(Replicas from)
    +    {
    +        replicaList = new ArrayList<>(from.size());
    +        addAll(from);
    +    }
    +
    +    public ReplicaList(Collection<Replica> from)
    +    {
    +        replicaList = new ArrayList<>(from);
    +    }
    +
    +    private ReplicaList(List<Replica> replicaList)
    +    {
    +        this.replicaList = replicaList;
    +    }
    +
    +    public boolean equals(Object o)
    +    {
    +        if (this == o) return true;
    +        if (o == null || getClass() != o.getClass()) return false;
    +        ReplicaList that = (ReplicaList) o;
    +        return Objects.equals(replicaList, that.replicaList);
    +    }
    +
    +    public int hashCode()
    +    {
    +
    +        return Objects.hash(replicaList);
    +    }
    +
    +    @Override
    +    public String toString()
    +    {
    +        return replicaList.toString();
    +    }
    +
    +    @Override
    +    public boolean add(Replica replica)
    +    {
    +        return replicaList.add(replica);
    +    }
    +
    +    @Override
    +    public void addAll(Iterable<Replica> replicas)
    +    {
    +        Iterables.addAll(replicaList, replicas);
    +    }
    +
    +    @Override
    +    public int size()
    +    {
    +        return replicaList.size();
    +    }
    +
    +    @Override
    +    public Iterator<Replica> iterator()
    +    {
    +        return replicaList.iterator();
    +    }
    +
    +    public Replica get(int idx)
    +    {
    +        return replicaList.get(idx);
    +    }
    +
    +    public List<InetAddressAndPort> asEndpointList()
    +    {
    +        List<InetAddressAndPort> endpoints = new 
ArrayList<>(replicaList.size());
    +        for (Replica replica: replicaList)
    +        {
    +            endpoints.add(replica.getEndpoint());
    +        }
    +        return endpoints;
    +    }
    +
    +    @Override
    +    public void removeEndpoint(InetAddressAndPort endpoint)
    +    {
    +        replicaList.removeIf(r -> r.getEndpoint().equals(endpoint));
    --- End diff --
    
    fixed


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