Examples with QuorumServer org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer used on opensource projects

Example 26 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class FLETest method testJoin.

/*
     * For ZOOKEEPER-975 verify that a peer joining an established cluster
     * does not go in LEADING state.
     */
@Test
public void testJoin() throws Exception {
    int sid;
    QuorumPeer peer;
    int waitTime = 10 * 1000;
    ArrayList<QuorumPeer> peerList = new ArrayList<QuorumPeer>();
    for (sid = 0; sid < 3; sid++) {
        port[sid] = PortAssignment.unique();
        peers.put(Long.valueOf(sid), new QuorumServer(sid, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", port[sid])));
        tmpdir[sid] = ClientBase.createTmpDir();
    }
    // start 2 peers and verify if they form the cluster
    for (sid = 0; sid < 2; sid++) {
        peer = new QuorumPeer(peers, tmpdir[sid], tmpdir[sid], port[sid], 3, sid, 2000, 2, 2);
        LOG.info("Starting peer " + peer.getId());
        peer.start();
        peerList.add(sid, peer);
    }
    peer = peerList.get(0);
    VerifyState v1 = new VerifyState(peerList.get(0));
    v1.start();
    v1.join(waitTime);
    Assert.assertFalse("Unable to form cluster in " + waitTime + " ms", !v1.isSuccess());
    // Start 3rd peer and check if it goes in LEADING state
    peer = new QuorumPeer(peers, tmpdir[sid], tmpdir[sid], port[sid], 3, sid, 2000, 2, 2);
    LOG.info("Starting peer " + peer.getId());
    peer.start();
    peerList.add(sid, peer);
    v1 = new VerifyState(peer);
    v1.start();
    v1.join(waitTime);
    if (v1.isAlive()) {
        Assert.fail("Peer " + peer.getId() + " failed to join the cluster " + "within " + waitTime + " ms");
    } else if (!v1.isSuccess()) {
        Assert.fail("Incorrect LEADING state for peer " + peer.getId());
    }
    // cleanup
    for (int id = 0; id < 3; id++) {
        peer = peerList.get(id);
        if (peer != null) {
            peer.shutdown();
        }
    }
}

Example 27 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class FLENewEpochTest method testLENewEpoch.

@Test
public void testLENewEpoch() throws Exception {
    LOG.info("TestLE: " + getTestName() + ", " + count);
    for (int i = 0; i < count; i++) {
        peers.put(Long.valueOf(i), new QuorumServer(i, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
        tmpdir[i] = ClientBase.createTmpDir();
        port[i] = PortAssignment.unique();
    }
    for (int i = 1; i < count; i++) {
        QuorumPeer peer = new QuorumPeer(peers, tmpdir[i], tmpdir[i], port[i], 3, i, 1000, 2, 2);
        peer.startLeaderElection();
        LEThread thread = new LEThread(peer, i);
        thread.start();
        threads.add(thread);
    }
    if (!start0.tryAcquire(4000, java.util.concurrent.TimeUnit.MILLISECONDS))
        Assert.fail("First leader election failed");
    QuorumPeer peer = new QuorumPeer(peers, tmpdir[0], tmpdir[0], port[0], 3, 0, 1000, 2, 2);
    peer.startLeaderElection();
    LEThread thread = new LEThread(peer, 0);
    thread.start();
    threads.add(thread);
    LOG.info("Started threads " + getTestName());
    for (int i = 0; i < threads.size(); i++) {
        threads.get(i).join(10000);
        if (threads.get(i).isAlive()) {
            Assert.fail("Threads didn't join");
        }
    }
}

Example 28 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class FLERestartTest method testLERestart.

@Test
public void testLERestart() throws Exception {
    LOG.info("TestLE: " + getTestName() + ", " + count);
    for (int i = 0; i < count; i++) {
        peers.put(Long.valueOf(i), new QuorumServer(i, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
        tmpdir[i] = ClientBase.createTmpDir();
        port[i] = PortAssignment.unique();
    }
    for (int i = 0; i < count; i++) {
        QuorumPeer peer = new QuorumPeer(peers, tmpdir[i], tmpdir[i], port[i], 3, i, 1000, 2, 2);
        peer.startLeaderElection();
        FLERestartThread thread = new FLERestartThread(peer, i);
        thread.start();
        restartThreads.add(thread);
    }
    LOG.info("Started threads " + getTestName());
    for (int i = 0; i < restartThreads.size(); i++) {
        restartThreads.get(i).join(10000);
        if (restartThreads.get(i).isAlive()) {
            Assert.fail("Threads didn't join");
        }
    }
}

Example 29 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class LENonTerminateTest method testNonTermination.

/**
     * This tests ZK-569.
     * With three peers A, B and C, the following could happen:
     * 1. Round 1, A,B and C all vote for themselves
     * 2. Round 2, C dies, A and B vote for C
     * 3. Because C has died, votes for it are ignored, but A and B never
     * reset their votes. Hence LE never terminates. ZK-569 fixes this by
     * resetting votes to themselves if the set of votes for live peers is null.
     */
@Test
public void testNonTermination() throws Exception {
    LOG.info("TestNonTermination: " + getTestName() + ", " + count);
    for (int i = 0; i < count; i++) {
        int clientport = PortAssignment.unique();
        peers.put(Long.valueOf(i), new QuorumServer(i, new InetSocketAddress("127.0.0.1", clientport), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
        tmpdir[i] = ClientBase.createTmpDir();
        port[i] = clientport;
    }
    /*
         * peer1 and peer2 are A and B in the above example.
         */
    QuorumPeer peer1 = new MockQuorumPeer(peers, tmpdir[0], tmpdir[0], port[0], 0, 0, 2, 2, 2);
    peer1.startLeaderElection();
    LEThread thread1 = new LEThread(peer1, 0);
    QuorumPeer peer2 = new MockQuorumPeer(peers, tmpdir[1], tmpdir[1], port[1], 0, 1, 2, 2, 2);
    peer2.startLeaderElection();
    LEThread thread2 = new LEThread(peer2, 1);
    /*
         * Start mock server.
         */
    Thread thread3 = new Thread() {

        public void run() {
            try {
                mockServer();
            } catch (Exception e) {
                LOG.error("exception", e);
                Assert.fail("Exception when running mocked server " + e);
            }
        }
    };
    thread3.start();
    Assert.assertTrue("mockServer did not start in 5s", mockLatch.await(5000, TimeUnit.MILLISECONDS));
    thread1.start();
    thread2.start();
    /*
         * Occasionally seen false negatives with a 5s timeout.
         */
    thread1.join(15000);
    thread2.join(15000);
    thread3.join(15000);
    if (thread1.isAlive() || thread2.isAlive() || thread3.isAlive()) {
        Assert.fail("Threads didn't join");
    }
}

Example 30 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class LENonTerminateTest method mockServer.

/**
     * MockServer plays the role of peer C. Respond to two requests for votes
     * with vote for self and then Assert.fail.
     */
void mockServer() throws InterruptedException, IOException {
    byte[] b = new byte[36];
    ByteBuffer responseBuffer = ByteBuffer.wrap(b);
    DatagramPacket packet = new DatagramPacket(b, b.length);
    QuorumServer server = peers.get(Long.valueOf(2));
    DatagramSocket udpSocket = new DatagramSocket(server.addr.getPort());
    LOG.info("In MockServer");
    mockLatch.countDown();
    Vote current = new Vote(2, 1);
    for (int i = 0; i < 2; ++i) {
        udpSocket.receive(packet);
        responseBuffer.rewind();
        LOG.info("Received " + responseBuffer.getInt() + " " + responseBuffer.getLong() + " " + responseBuffer.getLong());
        LOG.info("From " + packet.getSocketAddress());
        responseBuffer.clear();
        // Skip the xid
        responseBuffer.getInt();
        responseBuffer.putLong(2);
        responseBuffer.putLong(current.getId());
        responseBuffer.putLong(current.getZxid());
        packet.setData(b);
        udpSocket.send(packet);
    }
}