Examples of QuorumVerifier

org.apache.zookeeper.server.quorum.flexible.QuorumVerifier
All quorum validators have to implement a method called containsQuorum, which verifies if a HashSet of server identifiers constitutes a quorum.

Examples of org.apache.zookeeper.server.quorum.flexible.QuorumVerifier

                                                    + leaderStateSummary.getLastZxid()
                                                    + " (last zxid)");
                }
                electingFollowers.add(id);
            }
            QuorumVerifier verifier = self.getQuorumVerifier();
            if (electingFollowers.contains(self.getId()) && verifier.containsQuorum(electingFollowers)) {
                electionFinished = true;
                electingFollowers.notifyAll();
            } else {
                long start = System.currentTimeMillis();
                long cur = start;

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Examples of org.apache.zookeeper.server.quorum.flexible.QuorumVerifier

         *  to others inside a NEWLEADER message (see LearnerHandler where
         *  the NEWLEADER message is constructed), and once it has enough
         *  acks we must execute the following code so that it applies the
         *  config to itself.
         */
        QuorumVerifier newQV = self.getLastSeenQuorumVerifier();
        
        Long designatedLeader = getDesignatedLeader(newLeaderProposal, zk.getZxid());                                         
        
        self.processReconfig(newQV, designatedLeader, zk.getZxid(), true);
        if (designatedLeader != self.getId()) {

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Examples of org.apache.zookeeper.server.quorum.flexible.QuorumVerifier

           // and then got the same config in UPTODATE message so its already known
           LOG.debug(getId() + " setQuorumVerifier called with known or old config " + qv.getVersion() + 
                   ". Current version: " + quorumVerifier.getVersion());
           return quorumVerifier;  
        }
        QuorumVerifier prevQV = quorumVerifier;
        quorumVerifier = qv;
        if (lastSeenQuorumVerifier == null || (qv.getVersion() > lastSeenQuorumVerifier.getVersion()))
            lastSeenQuorumVerifier = qv;


        if (writeToDisk) {

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Examples of org.apache.zookeeper.server.quorum.flexible.QuorumVerifier

    public boolean processReconfig(QuorumVerifier qv, Long suggestedLeaderId, Long zxid, boolean restartLE){
       InetSocketAddress oldClientAddr = getClientAddress();


       // update last committed quorum verifier, write the new config to disk
       // and restart leader election if config changed
       QuorumVerifier prevQV = setQuorumVerifier(qv, true);


       // There is no log record for the initial config, thus after syncing
       // with leader
       // /zookeeper/config is empty! it is also possible that last committed
       // config is propagated during leader election
       // without the propagation the corresponding log records.
       // so we should explicitly do this (this is not necessary when we're
       // already a Follower/Observer, only
       // for Learner):
       initConfigInZKDatabase();


       if (prevQV.getVersion() < qv.getVersion() && !prevQV.equals(qv)) {
           Map<Long, QuorumServer> newMembers = qv.getAllMembers();
           updateRemotePeerMXBeans(newMembers);
           if (restartLE) restartLeaderElection(prevQV, qv);


           QuorumServer myNewQS = newMembers.get(getId());
           if (myNewQS != null && myNewQS.clientAddr != null
                   && !myNewQS.clientAddr.equals(oldClientAddr)) {
               cnxnFactory.reconfigure(myNewQS.clientAddr);
               updateThreadName();
           }
           
            boolean roleChange = updateLearnerType(qv);
           boolean leaderChange = false;
           if (suggestedLeaderId != null) {
               // zxid should be non-null too
               leaderChange = updateVote(suggestedLeaderId, zxid);
           } else {
               long currentLeaderId = getCurrentVote().getId();
               QuorumServer myleaderInCurQV = prevQV.getVotingMembers().get(currentLeaderId);
               QuorumServer myleaderInNewQV = qv.getVotingMembers().get(currentLeaderId);
               leaderChange = (myleaderInCurQV == null || myleaderInCurQV.addr == null || 
                               myleaderInNewQV == null || !myleaderInCurQV.addr.equals(myleaderInNewQV.addr));
               // we don't have a designated leader - need to go into leader
               // election

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