[GitHub] zookeeper pull request #605: [ZOOKEEPER-3125] Fixing pzxid consistent issue ...

[anmolnar <gi...@git.apache.org>]

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

    https://github.com/apache/zookeeper/pull/605#discussion_r215614171
  
    --- Diff: src/java/test/org/apache/zookeeper/server/quorum/FuzzySnapshotRelatedTest.java ---
    @@ -0,0 +1,254 @@
    +/**
    + * 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.zookeeper.server.quorum;
    +
    +import java.io.IOException;
    +import java.util.HashMap;
    +import java.util.Map;
    +import javax.security.sasl.SaslException;
    +
    +import org.apache.jute.OutputArchive;
    +import org.apache.zookeeper.CreateMode;
    +import org.apache.zookeeper.PortAssignment;
    +import org.apache.zookeeper.ZooDefs.Ids;
    +import org.apache.zookeeper.ZooKeeper;
    +import org.apache.zookeeper.ZooKeeper.States;
    +import org.apache.zookeeper.data.Stat;
    +import org.apache.zookeeper.server.DataNode;
    +import org.apache.zookeeper.server.DataTree;
    +import org.apache.zookeeper.server.ZKDatabase;
    +import org.apache.zookeeper.server.ZooKeeperServer;
    +import org.apache.zookeeper.test.ClientBase;
    +
    +import org.junit.Assert;
    +import org.junit.After;
    +import org.junit.Before;
    +import org.junit.Test;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +/**
    + * Test cases used to catch corner cases due to fuzzy snapshot.
    + */
    +public class FuzzySnapshotRelatedTest extends QuorumPeerTestBase {
    +
    +    private static final Logger LOG = LoggerFactory.getLogger(FuzzySnapshotRelatedTest.class);
    +
    +    MainThread[] mt = null;
    +    ZooKeeper[] zk = null;
    +    int leaderId;
    +    int followerA;
    +
    +    @Before
    +    public void setup() throws Exception {
    --- End diff --
    
    I see this initialization logic pretty much everywhere in unit tests. Do you think we can do some clever code sharing here with (for example) `QuorumPeerMainTest.java`? Private method `LaunchServers` does the same thing as far as I could see.


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