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

Example 1 with ServerState

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

the class FLETest method testJoinInconsistentEnsemble.

/*
     * For ZOOKEEPER-1732 verify that it is possible to join an ensemble with
     * inconsistent election round information.
     */
@Test
public void testJoinInconsistentEnsemble() throws Exception {
    int sid;
    QuorumPeer peer;
    int waitTime = 10 * 1000;
    ArrayList<QuorumPeer> peerList = new ArrayList<QuorumPeer>();
    for (sid = 0; sid < 3; sid++) {
        peers.put(Long.valueOf(sid), new QuorumServer(sid, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
        tmpdir[sid] = ClientBase.createTmpDir();
        port[sid] = PortAssignment.unique();
    }
    // 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());
    // Change the election round for one of the members of the ensemble
    long leaderSid = peer.getCurrentVote().getId();
    long zxid = peer.getCurrentVote().getZxid();
    long electionEpoch = peer.getCurrentVote().getElectionEpoch();
    ServerState state = peer.getCurrentVote().getState();
    long peerEpoch = peer.getCurrentVote().getPeerEpoch();
    Vote newVote = new Vote(leaderSid, zxid + 100, electionEpoch + 100, peerEpoch, state);
    peer.setCurrentVote(newVote);
    // Start 3rd peer and check if it joins the quorum
    peer = new QuorumPeer(peers, tmpdir[2], tmpdir[2], port[2], 3, 2, 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");
    }
    // cleanup
    for (int id = 0; id < 3; id++) {
        peer = peerList.get(id);
        if (peer != null) {
            peer.shutdown();
        }
    }
}