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From sboi...@apache.org
Subject [31/52] [abbrv] incubator-ignite git commit: # Renaming
Date Fri, 05 Dec 2014 14:07:32 GMT
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/1ef8f69b/modules/core/src/main/java/org/gridgain/grid/spi/discovery/tcp/TcpDiscoverySpi.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/gridgain/grid/spi/discovery/tcp/TcpDiscoverySpi.java b/modules/core/src/main/java/org/gridgain/grid/spi/discovery/tcp/TcpDiscoverySpi.java
deleted file mode 100644
index 40e4418..0000000
--- a/modules/core/src/main/java/org/gridgain/grid/spi/discovery/tcp/TcpDiscoverySpi.java
+++ /dev/null
@@ -1,5144 +0,0 @@
-/* @java.file.header */
-
-/*  _________        _____ __________________        _____
- *  __  ____/___________(_)______  /__  ____/______ ____(_)_______
- *  _  / __  __  ___/__  / _  __  / _  / __  _  __ `/__  / __  __ \
- *  / /_/ /  _  /    _  /  / /_/ /  / /_/ /  / /_/ / _  /  _  / / /
- *  \____/   /_/     /_/   \_,__/   \____/   \__,_/  /_/   /_/ /_/
- */
-
-package org.gridgain.grid.spi.discovery.tcp;
-
-import org.apache.ignite.*;
-import org.apache.ignite.cluster.*;
-import org.apache.ignite.configuration.*;
-import org.apache.ignite.lang.*;
-import org.apache.ignite.marshaller.*;
-import org.apache.ignite.resources.*;
-import org.apache.ignite.spi.*;
-import org.gridgain.grid.*;
-import org.gridgain.grid.kernal.*;
-import org.gridgain.grid.kernal.managers.security.*;
-import org.gridgain.grid.security.*;
-import org.gridgain.grid.spi.discovery.*;
-import org.gridgain.grid.spi.discovery.tcp.internal.*;
-import org.gridgain.grid.spi.discovery.tcp.ipfinder.multicast.*;
-import org.gridgain.grid.spi.discovery.tcp.messages.*;
-import org.gridgain.grid.util.*;
-import org.gridgain.grid.util.future.*;
-import org.gridgain.grid.util.lang.*;
-import org.gridgain.grid.util.tostring.*;
-import org.gridgain.grid.util.typedef.*;
-import org.gridgain.grid.util.typedef.internal.*;
-import org.jdk8.backport.*;
-import org.jetbrains.annotations.*;
-
-import java.io.*;
-import java.net.*;
-import java.text.*;
-import java.util.*;
-import java.util.concurrent.*;
-
-import static org.apache.ignite.events.IgniteEventType.*;
-import static org.gridgain.grid.kernal.GridNodeAttributes.*;
-import static org.apache.ignite.spi.IgnitePortProtocol.*;
-import static org.gridgain.grid.spi.discovery.tcp.internal.TcpDiscoverySpiState.*;
-import static org.gridgain.grid.spi.discovery.tcp.messages.TcpDiscoveryHeartbeatMessage.*;
-import static org.gridgain.grid.spi.discovery.tcp.messages.TcpDiscoveryStatusCheckMessage.*;
-
-/**
- * Discovery SPI implementation that uses TCP/IP for node discovery.
- * <p>
- * Nodes are organized in ring. So almost all network exchange (except few cases) is
- * done across it.
- * <p>
- * At startup SPI tries to send messages to random IP taken from
- * {@link org.gridgain.grid.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder} about self start (stops when send succeeds)
- * and then this info goes to coordinator. When coordinator processes join request
- * and issues node added messages and all other nodes then receive info about new node.
- * <h1 class="header">Configuration</h1>
- * <h2 class="header">Mandatory</h2>
- * There are no mandatory configuration parameters.
- * <h2 class="header">Optional</h2>
- * The following configuration parameters are optional:
- * <ul>
- * <li>IP finder to share info about nodes IP addresses
- * (see {@link #setIpFinder(org.gridgain.grid.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder)}).
- * See the following IP finder implementations for details on configuration:
- * <ul>
- * <li>{@link org.gridgain.grid.spi.discovery.tcp.ipfinder.sharedfs.TcpDiscoverySharedFsIpFinder}</li>
- * <li>{@gglink org.gridgain.grid.spi.discovery.tcp.ipfinder.s3.GridTcpDiscoveryS3IpFinder}</li>
- * <li>{@link org.gridgain.grid.spi.discovery.tcp.ipfinder.jdbc.TcpDiscoveryJdbcIpFinder}</li>
- * <li>{@link org.gridgain.grid.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder}</li>
- * <li>{@link org.gridgain.grid.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder} - default</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * </li>
- * <li>Local address (see {@link #setLocalAddress(String)})</li>
- * <li>Local port to bind to (see {@link #setLocalPort(int)})</li>
- * <li>Local port range to try binding to if previous ports are in use
- *      (see {@link #setLocalPortRange(int)})</li>
- * <li>Heartbeat frequency (see {@link #setHeartbeatFrequency(long)})</li>
- * <li>Max missed heartbeats (see {@link #setMaxMissedHeartbeats(int)})</li>
- * <li>Number of times node tries to (re)establish connection to another node
- *      (see {@link #setReconnectCount(int)})</li>
- * <li>Network timeout (see {@link #setNetworkTimeout(long)})</li>
- * <li>Socket timeout (see {@link #setSocketTimeout(long)})</li>
- * <li>Message acknowledgement timeout (see {@link #setAckTimeout(long)})</li>
- * <li>Maximum message acknowledgement timeout (see {@link #setMaxAckTimeout(long)})</li>
- * <li>Join timeout (see {@link #setJoinTimeout(long)})</li>
- * <li>Thread priority for threads started by SPI (see {@link #setThreadPriority(int)})</li>
- * <li>IP finder clean frequency (see {@link #setIpFinderCleanFrequency(long)})</li>
- * <li>Statistics print frequency (see {@link #setStatisticsPrintFrequency(long)}</li>
- * </ul>
- * <h2 class="header">Java Example</h2>
- * <pre name="code" class="java">
- * GridTcpDiscoverySpi spi = new GridTcpDiscoverySpi();
- *
- * GridTcpDiscoveryVmIpFinder finder =
- *     new GridTcpDiscoveryVmIpFinder();
- *
- * spi.setIpFinder(finder);
- *
- * GridConfiguration cfg = new GridConfiguration();
- *
- * // Override default discovery SPI.
- * cfg.setDiscoverySpi(spi);
- *
- * // Start grid.
- * GridGain.start(cfg);
- * </pre>
- * <h2 class="header">Spring Example</h2>
- * GridTcpDiscoverySpi can be configured from Spring XML configuration file:
- * <pre name="code" class="xml">
- * &lt;bean id="grid.custom.cfg" class="org.gridgain.grid.GridConfiguration" singleton="true"&gt;
- *         ...
- *         &lt;property name="discoverySpi"&gt;
- *             &lt;bean class="org.gridgain.grid.spi.discovery.tcp.GridTcpDiscoverySpi"&gt;
- *                 &lt;property name="ipFinder"&gt;
- *                     &lt;bean class="org.gridgain.grid.spi.discovery.tcp.ipfinder.vm.GridTcpDiscoveryVmIpFinder" /&gt;
- *                 &lt;/property&gt;
- *             &lt;/bean&gt;
- *         &lt;/property&gt;
- *         ...
- * &lt;/bean&gt;
- * </pre>
- * <p>
- * <img src="http://www.gridgain.com/images/spring-small.png">
- * <br>
- * For information about Spring framework visit <a href="http://www.springframework.org/">www.springframework.org</a>
- * @see org.gridgain.grid.spi.discovery.DiscoverySpi
- */
-@SuppressWarnings("NonPrivateFieldAccessedInSynchronizedContext")
-@IgniteSpiMultipleInstancesSupport(true)
-@DiscoverySpiOrderSupport(true)
-@DiscoverySpiHistorySupport(true)
-public class TcpDiscoverySpi extends TcpDiscoverySpiAdapter implements TcpDiscoverySpiMBean {
-    /** Default local port range (value is <tt>100</tt>). */
-    public static final int DFLT_PORT_RANGE = 100;
-
-    /** Default timeout for joining topology (value is <tt>0</tt>). */
-    public static final long DFLT_JOIN_TIMEOUT = 0;
-
-    /** Default reconnect attempts count (value is <tt>10</tt>). */
-    public static final int DFLT_RECONNECT_CNT = 10;
-
-    /** Default max heartbeats count node can miss without initiating status check (value is <tt>1</tt>). */
-    public static final int DFLT_MAX_MISSED_HEARTBEATS = 1;
-
-    /** Default max heartbeats count node can miss without failing client node (value is <tt>5</tt>). */
-    public static final int DFLT_MAX_MISSED_CLIENT_HEARTBEATS = 5;
-
-    /** Default IP finder clean frequency in milliseconds (value is <tt>60,000ms</tt>). */
-    public static final long DFLT_IP_FINDER_CLEAN_FREQ = 60 * 1000;
-
-    /** Default statistics print frequency in milliseconds (value is <tt>0ms</tt>). */
-    public static final long DFLT_STATS_PRINT_FREQ = 0;
-
-    /** Maximum ack timeout value for receiving message acknowledgement in milliseconds (value is <tt>600,000ms</tt>). */
-    public static final long DFLT_MAX_ACK_TIMEOUT = 10 * 60 * 1000;
-
-    /** Node attribute that is mapped to node's external addresses (value is <tt>disc.tcp.ext-addrs</tt>). */
-    public static final String ATTR_EXT_ADDRS = "disc.tcp.ext-addrs";
-
-    /** Address resolver. */
-    private IgniteAddressResolver addrRslvr;
-
-    /** Local port which node uses. */
-    private int locPort = DFLT_PORT;
-
-    /** Local port range. */
-    private int locPortRange = DFLT_PORT_RANGE;
-
-    /** Statistics print frequency. */
-    @SuppressWarnings({"FieldAccessedSynchronizedAndUnsynchronized", "RedundantFieldInitialization"})
-    private long statsPrintFreq = DFLT_STATS_PRINT_FREQ;
-
-    /** Maximum message acknowledgement timeout. */
-    private long maxAckTimeout = DFLT_MAX_ACK_TIMEOUT;
-
-    /** Join timeout. */
-    @SuppressWarnings("RedundantFieldInitialization")
-    private long joinTimeout = DFLT_JOIN_TIMEOUT;
-
-    /** Max heartbeats count node can miss without initiating status check. */
-    private int maxMissedHbs = DFLT_MAX_MISSED_HEARTBEATS;
-
-    /** Max heartbeats count node can miss without failing client node. */
-    private int maxMissedClientHbs = DFLT_MAX_MISSED_CLIENT_HEARTBEATS;
-
-    /** IP finder clean frequency. */
-    @SuppressWarnings({"FieldAccessedSynchronizedAndUnsynchronized"})
-    private long ipFinderCleanFreq = DFLT_IP_FINDER_CLEAN_FREQ;
-
-    /** Reconnect attempts count. */
-    @SuppressWarnings({"FieldAccessedSynchronizedAndUnsynchronized"})
-    private int reconCnt = DFLT_RECONNECT_CNT;
-
-    /** Grid marshaller. */
-    @IgniteMarshallerResource
-    private IgniteMarshaller gridMarsh;
-
-    /** Nodes ring. */
-    @GridToStringExclude
-    private final TcpDiscoveryNodesRing ring = new TcpDiscoveryNodesRing();
-
-    /** Topology snapshots history. */
-    private final SortedMap<Long, Collection<ClusterNode>> topHist = new TreeMap<>();
-
-    /** Socket readers. */
-    private final Collection<SocketReader> readers = new LinkedList<>();
-
-    /** TCP server for discovery SPI. */
-    private TcpServer tcpSrvr;
-
-    /** Message worker. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private RingMessageWorker msgWorker;
-
-    /** Client message workers. */
-    private ConcurrentMap<UUID, ClientMessageWorker> clientMsgWorkers = new ConcurrentHashMap8<>();
-
-    /** Metrics sender. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private HeartbeatsSender hbsSnd;
-
-    /** Status checker. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private CheckStatusSender chkStatusSnd;
-
-    /** IP finder cleaner. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private IpFinderCleaner ipFinderCleaner;
-
-    /** Statistics printer thread. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private StatisticsPrinter statsPrinter;
-
-    /** Failed nodes (but still in topology). */
-    private Collection<TcpDiscoveryNode> failedNodes = new HashSet<>();
-
-    /** Leaving nodes (but still in topology). */
-    private Collection<TcpDiscoveryNode> leavingNodes = new HashSet<>();
-
-    /** If non-shared IP finder is used this flag shows whether IP finder contains local address. */
-    private boolean ipFinderHasLocAddr;
-
-    /** Addresses that do not respond during join requests send (for resolving concurrent start). */
-    private final Collection<SocketAddress> noResAddrs = new GridConcurrentHashSet<>();
-
-    /** Addresses that incoming join requests send were send from (for resolving concurrent start). */
-    private final Collection<SocketAddress> fromAddrs = new GridConcurrentHashSet<>();
-
-    /** Response on join request from coordinator (in case of duplicate ID or auth failure). */
-    private final GridTuple<TcpDiscoveryAbstractMessage> joinRes = F.t1();
-
-    /** Context initialization latch. */
-    @GridToStringExclude
-    private final CountDownLatch ctxInitLatch = new CountDownLatch(1);
-
-    /** Node authenticator. */
-    private DiscoverySpiNodeAuthenticator nodeAuth;
-
-    /** Mutex. */
-    private final Object mux = new Object();
-
-    /** Map with proceeding ping requests. */
-    private final ConcurrentMap<InetSocketAddress, IgniteFuture<IgniteBiTuple<UUID, Boolean>>> pingMap =
-        new ConcurrentHashMap8<>();
-
-    /** Debug mode. */
-    private boolean debugMode;
-
-    /** Debug messages history. */
-    private int debugMsgHist = 512;
-
-    /** Received messages. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private ConcurrentLinkedDeque<String> debugLog;
-
-    /**
-     * Sets address resolver.
-     *
-     * @param addrRslvr Address resolver.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    @IgniteAddressResolverResource
-    public void setAddressResolver(IgniteAddressResolver addrRslvr) {
-        // Injection should not override value already set by Spring or user.
-        if (this.addrRslvr == null)
-            this.addrRslvr = addrRslvr;
-    }
-
-    /**
-     * Gets address resolver.
-     *
-     * @return Address resolver.
-     */
-    public IgniteAddressResolver getAddressResolver() {
-        return addrRslvr;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getReconnectCount() {
-        return reconCnt;
-    }
-
-    /**
-     * Number of times node tries to (re)establish connection to another node.
-     * <p>
-     * Note that SPI implementation will increase {@link #ackTimeout} by factor 2
-     * on every retry.
-     * <p>
-     * If not specified, default is {@link #DFLT_RECONNECT_CNT}.
-     *
-     * @param reconCnt Number of retries during message sending.
-     * @see #setAckTimeout(long)
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setReconnectCount(int reconCnt) {
-        this.reconCnt = reconCnt;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getMaxAckTimeout() {
-        return maxAckTimeout;
-    }
-
-    /**
-     * Sets maximum timeout for receiving acknowledgement for sent message.
-     * <p>
-     * If acknowledgement is not received within this timeout, sending is considered as failed
-     * and SPI tries to repeat message sending. Every time SPI retries messing sending, ack
-     * timeout will be increased. If no acknowledgement is received and {@code maxAckTimeout}
-     * is reached, then the process of message sending is considered as failed.
-     * <p>
-     * If not specified, default is {@link #DFLT_MAX_ACK_TIMEOUT}.
-     *
-     * @param maxAckTimeout Maximum acknowledgement timeout.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setMaxAckTimeout(long maxAckTimeout) {
-        this.maxAckTimeout = maxAckTimeout;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getJoinTimeout() {
-        return joinTimeout;
-    }
-
-    /**
-     * Sets join timeout.
-     * <p>
-     * If non-shared IP finder is used and node fails to connect to
-     * any address from IP finder, node keeps trying to join within this
-     * timeout. If all addresses are still unresponsive, exception is thrown
-     * and node startup fails.
-     * <p>
-     * If not specified, default is {@link #DFLT_JOIN_TIMEOUT}.
-     *
-     * @param joinTimeout Join timeout ({@code 0} means wait forever).
-     *
-     * @see org.gridgain.grid.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder#isShared()
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setJoinTimeout(long joinTimeout) {
-        this.joinTimeout = joinTimeout;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getLocalPort() {
-        TcpDiscoveryNode locNode0 = locNode;
-
-        return locNode0 != null ? locNode0.discoveryPort() : 0;
-    }
-
-    /**
-     * Sets local port to listen to.
-     * <p>
-     * If not specified, default is {@link #DFLT_PORT}.
-     *
-     * @param locPort Local port to bind.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setLocalPort(int locPort) {
-        this.locPort = locPort;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getLocalPortRange() {
-        return locPortRange;
-    }
-
-    /**
-     * Range for local ports. Local node will try to bind on first available port
-     * starting from {@link #getLocalPort()} up until
-     * <tt>{@link #getLocalPort()} {@code + locPortRange}</tt>.
-     * <p>
-     * If not specified, default is {@link #DFLT_PORT_RANGE}.
-     *
-     * @param locPortRange Local port range to bind.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setLocalPortRange(int locPortRange) {
-        this.locPortRange = locPortRange;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getMaxMissedHeartbeats() {
-        return maxMissedHbs;
-    }
-
-    /**
-     * Sets max heartbeats count node can miss without initiating status check.
-     * <p>
-     * If not provided, default value is {@link #DFLT_MAX_MISSED_HEARTBEATS}.
-     *
-     * @param maxMissedHbs Max missed heartbeats.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setMaxMissedHeartbeats(int maxMissedHbs) {
-        this.maxMissedHbs = maxMissedHbs;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getMaxMissedClientHeartbeats() {
-        return maxMissedClientHbs;
-    }
-
-    /**
-     * Sets max heartbeats count node can miss without failing client node.
-     * <p>
-     * If not provided, default value is {@link #DFLT_MAX_MISSED_CLIENT_HEARTBEATS}.
-     *
-     * @param maxMissedClientHbs Max missed client heartbeats.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setMaxMissedClientHeartbeats(int maxMissedClientHbs) {
-        this.maxMissedClientHbs = maxMissedClientHbs;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getStatisticsPrintFrequency() {
-        return statsPrintFreq;
-    }
-
-    /**
-     * Sets statistics print frequency.
-     * <p>
-     * If not set default value is {@link #DFLT_STATS_PRINT_FREQ}.
-     * 0 indicates that no print is required. If value is greater than 0 and log is
-     * not quiet then statistics are printed out with INFO level.
-     * <p>
-     * This may be very helpful for tracing topology problems.
-     *
-     * @param statsPrintFreq Statistics print frequency in milliseconds.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setStatisticsPrintFrequency(long statsPrintFreq) {
-        this.statsPrintFreq = statsPrintFreq;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getIpFinderCleanFrequency() {
-        return ipFinderCleanFreq;
-    }
-
-    /**
-     * Sets IP finder clean frequency in milliseconds.
-     * <p>
-     * If not provided, default value is {@link #DFLT_IP_FINDER_CLEAN_FREQ}
-     *
-     * @param ipFinderCleanFreq IP finder clean frequency.
-     */
-    @IgniteSpiConfiguration(optional = true)
-    public void setIpFinderCleanFrequency(long ipFinderCleanFreq) {
-        this.ipFinderCleanFreq = ipFinderCleanFreq;
-    }
-
-    /**
-     * This method is intended for troubleshooting purposes only.
-     *
-     * @param debugMode {code True} to start SPI in debug mode.
-     */
-    public void setDebugMode(boolean debugMode) {
-        this.debugMode = debugMode;
-    }
-
-    /**
-     * This method is intended for troubleshooting purposes only.
-     *
-     * @param debugMsgHist Message history log size.
-     */
-    public void setDebugMessageHistory(int debugMsgHist) {
-        this.debugMsgHist = debugMsgHist;
-    }
-
-    /** {@inheritDoc} */
-    @Override public String getSpiState() {
-        synchronized (mux) {
-            return spiState.name();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getSocketTimeout() {
-        return sockTimeout;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getAckTimeout() {
-        return ackTimeout;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getNetworkTimeout() {
-        return netTimeout;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getThreadPriority() {
-        return threadPri;
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getHeartbeatFrequency() {
-        return hbFreq;
-    }
-
-    /** {@inheritDoc} */
-    @Override public String getIpFinderFormatted() {
-        return ipFinder.toString();
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getMessageWorkerQueueSize() {
-        return msgWorker.queueSize();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getNodesJoined() {
-        return stats.joinedNodesCount();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getNodesLeft() {
-        return stats.leftNodesCount();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getNodesFailed() {
-        return stats.failedNodesCount();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getPendingMessagesRegistered() {
-        return stats.pendingMessagesRegistered();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getPendingMessagesDiscarded() {
-        return stats.pendingMessagesDiscarded();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getAvgMessageProcessingTime() {
-        return stats.avgMessageProcessingTime();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getMaxMessageProcessingTime() {
-        return stats.maxMessageProcessingTime();
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getTotalReceivedMessages() {
-        return stats.totalReceivedMessages();
-    }
-
-    /** {@inheritDoc} */
-    @Override public Map<String, Integer> getReceivedMessages() {
-        return stats.receivedMessages();
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getTotalProcessedMessages() {
-        return stats.totalProcessedMessages();
-    }
-
-    /** {@inheritDoc} */
-    @Override public Map<String, Integer> getProcessedMessages() {
-        return stats.processedMessages();
-    }
-
-    /** {@inheritDoc} */
-    @Override public long getCoordinatorSinceTimestamp() {
-        return stats.coordinatorSinceTimestamp();
-    }
-
-    /** {@inheritDoc} */
-    @Nullable @Override public UUID getCoordinator() {
-        TcpDiscoveryNode crd = resolveCoordinator();
-
-        return crd != null ? crd.id() : null;
-    }
-
-    /** {@inheritDoc} */
-    @Nullable @Override public ClusterNode getNode(UUID nodeId) {
-        assert nodeId != null;
-
-        UUID locNodeId0 = locNodeId;
-
-        if (locNodeId0 != null && locNodeId0.equals(nodeId))
-            // Return local node directly.
-            return locNode;
-
-        TcpDiscoveryNode node = ring.node(nodeId);
-
-        if (node != null && !node.visible())
-            return null;
-
-        return node;
-    }
-
-    /** {@inheritDoc} */
-    @Override public Collection<ClusterNode> getRemoteNodes() {
-        return F.<TcpDiscoveryNode, ClusterNode>upcast(ring.visibleRemoteNodes());
-    }
-
-    /** {@inheritDoc} */
-    @Override public Collection<Object> injectables() {
-        Collection<Object> res = new LinkedList<>();
-
-        if (ipFinder != null)
-            res.add(ipFinder);
-
-        return res;
-    }
-
-    /** {@inheritDoc} */
-    @Override public void spiStart(String gridName) throws IgniteSpiException {
-        spiStart0(false);
-    }
-
-    /**
-     * Starts or restarts SPI after stop (to reconnect).
-     *
-     * @param restart {@code True} if SPI is restarted after stop.
-     * @throws org.apache.ignite.spi.IgniteSpiException If failed.
-     */
-    private void spiStart0(boolean restart) throws IgniteSpiException {
-        if (!restart)
-            // It is initial start.
-            onSpiStart();
-
-        synchronized (mux) {
-            spiState = DISCONNECTED;
-        }
-
-        if (debugMode) {
-            if (!log.isInfoEnabled())
-                throw new IgniteSpiException("Info log level should be enabled for TCP discovery to work " +
-                    "in debug mode.");
-
-            debugLog = new ConcurrentLinkedDeque<>();
-
-            U.quietAndWarn(log, "TCP discovery SPI is configured in debug mode.");
-        }
-
-        // Clear addresses collections.
-        fromAddrs.clear();
-        noResAddrs.clear();
-
-        sockTimeoutWorker = new SocketTimeoutWorker();
-        sockTimeoutWorker.start();
-
-        msgWorker = new RingMessageWorker();
-        msgWorker.start();
-
-        tcpSrvr = new TcpServer();
-
-        // Init local node.
-        IgniteBiTuple<Collection<String>, Collection<String>> addrs;
-
-        try {
-            addrs = U.resolveLocalAddresses(locHost);
-        }
-        catch (IOException | GridException e) {
-            throw new IgniteSpiException("Failed to resolve local host to set of external addresses: " + locHost, e);
-        }
-
-        locNode = new TcpDiscoveryNode(
-            locNodeId,
-            addrs.get1(),
-            addrs.get2(),
-            tcpSrvr.port,
-            metricsProvider,
-            locNodeVer);
-
-        try {
-            Collection<InetSocketAddress> extAddrs = addrRslvr == null ? null :
-                U.resolveAddresses(addrRslvr, F.flat(Arrays.asList(addrs.get1(), addrs.get2())),
-                    locNode.discoveryPort());
-
-            if (extAddrs != null)
-                locNodeAttrs.put(createSpiAttributeName(ATTR_EXT_ADDRS), extAddrs);
-        }
-        catch (GridException e) {
-            throw new IgniteSpiException("Failed to resolve local host to addresses: " + locHost, e);
-        }
-
-        locNode.setAttributes(locNodeAttrs);
-
-        locNode.local(true);
-
-        locNodeAddrs = getNodeAddresses(locNode);
-
-        if (log.isDebugEnabled())
-            log.debug("Local node initialized: " + locNode);
-
-        // Start TCP server thread after local node is initialized.
-        tcpSrvr.start();
-
-        ring.localNode(locNode);
-
-        if (ipFinder.isShared())
-            registerLocalNodeAddress();
-        else {
-            if (F.isEmpty(ipFinder.getRegisteredAddresses()))
-                throw new IgniteSpiException("Non-shared IP finder must have IP addresses specified in " +
-                    "GridTcpDiscoveryIpFinder.getRegisteredAddresses() configuration property " +
-                    "(specify list of IP addresses in configuration).");
-
-            ipFinderHasLocAddr = ipFinderHasLocalAddress();
-        }
-
-        if (statsPrintFreq > 0 && log.isInfoEnabled()) {
-            statsPrinter = new StatisticsPrinter();
-            statsPrinter.start();
-        }
-
-        stats.onJoinStarted();
-
-        joinTopology();
-
-        stats.onJoinFinished();
-
-        hbsSnd = new HeartbeatsSender();
-        hbsSnd.start();
-
-        chkStatusSnd = new CheckStatusSender();
-        chkStatusSnd.start();
-
-        if (ipFinder.isShared()) {
-            ipFinderCleaner = new IpFinderCleaner();
-            ipFinderCleaner.start();
-        }
-
-        if (log.isDebugEnabled() && !restart)
-            log.debug(startInfo());
-
-        if (restart)
-            getSpiContext().registerPort(tcpSrvr.port, TCP);
-    }
-
-    /**
-     * @throws org.apache.ignite.spi.IgniteSpiException If failed.
-     */
-    @SuppressWarnings("BusyWait")
-    private void registerLocalNodeAddress() throws IgniteSpiException {
-        // Make sure address registration succeeded.
-        while (true) {
-            try {
-                ipFinder.initializeLocalAddresses(locNode.socketAddresses());
-
-                // Success.
-                break;
-            }
-            catch (IllegalStateException e) {
-                throw new IgniteSpiException("Failed to register local node address with IP finder: " +
-                    locNode.socketAddresses(), e);
-            }
-            catch (IgniteSpiException e) {
-                LT.error(log, e, "Failed to register local node address in IP finder on start " +
-                    "(retrying every 2000 ms).");
-            }
-
-            try {
-                U.sleep(2000);
-            }
-            catch (GridInterruptedException e) {
-                throw new IgniteSpiException("Thread has been interrupted.", e);
-            }
-        }
-    }
-
-    /**
-     * @throws org.apache.ignite.spi.IgniteSpiException If failed.
-     */
-    private void onSpiStart() throws IgniteSpiException {
-        startStopwatch();
-
-        assertParameter(ipFinder != null, "ipFinder != null");
-        assertParameter(ipFinderCleanFreq > 0, "ipFinderCleanFreq > 0");
-        assertParameter(locPort > 1023, "localPort > 1023");
-        assertParameter(locPortRange >= 0, "localPortRange >= 0");
-        assertParameter(locPort + locPortRange <= 0xffff, "locPort + locPortRange <= 0xffff");
-        assertParameter(netTimeout > 0, "networkTimeout > 0");
-        assertParameter(sockTimeout > 0, "sockTimeout > 0");
-        assertParameter(ackTimeout > 0, "ackTimeout > 0");
-        assertParameter(maxAckTimeout > ackTimeout, "maxAckTimeout > ackTimeout");
-        assertParameter(reconCnt > 0, "reconnectCnt > 0");
-        assertParameter(hbFreq > 0, "heartbeatFreq > 0");
-        assertParameter(maxMissedHbs > 0, "maxMissedHeartbeats > 0");
-        assertParameter(maxMissedClientHbs > 0, "maxMissedClientHeartbeats > 0");
-        assertParameter(threadPri > 0, "threadPri > 0");
-        assertParameter(statsPrintFreq >= 0, "statsPrintFreq >= 0");
-
-        try {
-            locHost = U.resolveLocalHost(locAddr);
-        }
-        catch (IOException e) {
-            throw new IgniteSpiException("Unknown local address: " + locAddr, e);
-        }
-
-        if (log.isDebugEnabled()) {
-            log.debug(configInfo("localHost", locHost.getHostAddress()));
-            log.debug(configInfo("localPort", locPort));
-            log.debug(configInfo("localPortRange", locPortRange));
-            log.debug(configInfo("threadPri", threadPri));
-            log.debug(configInfo("networkTimeout", netTimeout));
-            log.debug(configInfo("sockTimeout", sockTimeout));
-            log.debug(configInfo("ackTimeout", ackTimeout));
-            log.debug(configInfo("maxAckTimeout", maxAckTimeout));
-            log.debug(configInfo("reconnectCount", reconCnt));
-            log.debug(configInfo("ipFinder", ipFinder));
-            log.debug(configInfo("ipFinderCleanFreq", ipFinderCleanFreq));
-            log.debug(configInfo("heartbeatFreq", hbFreq));
-            log.debug(configInfo("maxMissedHeartbeats", maxMissedHbs));
-            log.debug(configInfo("statsPrintFreq", statsPrintFreq));
-        }
-
-        // Warn on odd network timeout.
-        if (netTimeout < 3000)
-            U.warn(log, "Network timeout is too low (at least 3000 ms recommended): " + netTimeout);
-
-        // Warn on odd heartbeat frequency.
-        if (hbFreq < 2000)
-            U.warn(log, "Heartbeat frequency is too high (at least 2000 ms recommended): " + hbFreq);
-
-        registerMBean(gridName, this, TcpDiscoverySpiMBean.class);
-
-        if (ipFinder instanceof TcpDiscoveryMulticastIpFinder) {
-            TcpDiscoveryMulticastIpFinder mcastIpFinder = ((TcpDiscoveryMulticastIpFinder)ipFinder);
-
-            if (mcastIpFinder.getLocalAddress() == null)
-                mcastIpFinder.setLocalAddress(locAddr);
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void onContextInitialized0(IgniteSpiContext spiCtx) throws IgniteSpiException {
-        super.onContextInitialized0(spiCtx);
-
-        ctxInitLatch.countDown();
-
-        spiCtx.registerPort(tcpSrvr.port, TCP);
-    }
-
-    /** {@inheritDoc} */
-    @Override public IgniteSpiContext getSpiContext() {
-        if (ctxInitLatch.getCount() > 0) {
-            if (log.isDebugEnabled())
-                log.debug("Waiting for context initialization.");
-
-            try {
-                U.await(ctxInitLatch);
-
-                if (log.isDebugEnabled())
-                    log.debug("Context has been initialized.");
-            }
-            catch (GridInterruptedException e) {
-                U.warn(log, "Thread has been interrupted while waiting for SPI context initialization.", e);
-            }
-        }
-
-        return super.getSpiContext();
-    }
-
-    /** {@inheritDoc} */
-    @Override public void spiStop() throws IgniteSpiException {
-        spiStop0(false);
-    }
-
-    /**
-     * Stops SPI finally or stops SPI for restart.
-     *
-     * @param disconnect {@code True} if SPI is being disconnected.
-     * @throws org.apache.ignite.spi.IgniteSpiException If failed.
-     */
-    private void spiStop0(boolean disconnect) throws IgniteSpiException {
-        if (ctxInitLatch.getCount() > 0)
-            // Safety.
-            ctxInitLatch.countDown();
-
-        if (log.isDebugEnabled()) {
-            if (disconnect)
-                log.debug("Disconnecting SPI.");
-            else
-                log.debug("Preparing to start local node stop procedure.");
-        }
-
-        if (disconnect) {
-            synchronized (mux) {
-                spiState = DISCONNECTING;
-            }
-        }
-
-        if (msgWorker != null && msgWorker.isAlive() && !disconnect) {
-            // Send node left message only if it is final stop.
-            msgWorker.addMessage(new TcpDiscoveryNodeLeftMessage(locNodeId));
-
-            synchronized (mux) {
-                long threshold = U.currentTimeMillis() + netTimeout;
-
-                long timeout = netTimeout;
-
-                while (spiState != LEFT && timeout > 0) {
-                    try {
-                        mux.wait(timeout);
-
-                        timeout = threshold - U.currentTimeMillis();
-                    }
-                    catch (InterruptedException ignored) {
-                        Thread.currentThread().interrupt();
-
-                        break;
-                    }
-                }
-
-                if (spiState == LEFT) {
-                    if (log.isDebugEnabled())
-                        log.debug("Verification for local node leave has been received from coordinator" +
-                            " (continuing stop procedure).");
-                }
-                else if (log.isInfoEnabled()) {
-                    log.info("No verification for local node leave has been received from coordinator" +
-                        " (will stop node anyway).");
-                }
-            }
-        }
-
-        U.interrupt(tcpSrvr);
-        U.join(tcpSrvr, log);
-
-        Collection<SocketReader> tmp;
-
-        synchronized (mux) {
-            tmp = U.arrayList(readers);
-        }
-
-        U.interrupt(tmp);
-        U.joinThreads(tmp, log);
-
-        U.interrupt(hbsSnd);
-        U.join(hbsSnd, log);
-
-        U.interrupt(chkStatusSnd);
-        U.join(chkStatusSnd, log);
-
-        U.interrupt(ipFinderCleaner);
-        U.join(ipFinderCleaner, log);
-
-        U.interrupt(msgWorker);
-        U.join(msgWorker, log);
-
-        U.interrupt(sockTimeoutWorker);
-        U.join(sockTimeoutWorker, log);
-
-        U.interrupt(statsPrinter);
-        U.join(statsPrinter, log);
-
-        if (ipFinder != null)
-            ipFinder.close();
-
-        Collection<TcpDiscoveryNode> rmts = null;
-
-        if (!disconnect) {
-            // This is final stop.
-            unregisterMBean();
-
-            if (log.isDebugEnabled())
-                log.debug(stopInfo());
-        }
-        else {
-            getSpiContext().deregisterPorts();
-
-            rmts = ring.visibleRemoteNodes();
-        }
-
-        long topVer = ring.topologyVersion();
-
-        ring.clear();
-
-        if (rmts != null && !rmts.isEmpty()) {
-            // This is restart/disconnection and remote nodes are not empty.
-            // We need to fire FAIL event for each.
-            DiscoverySpiListener lsnr = this.lsnr;
-
-            if (lsnr != null) {
-                Collection<ClusterNode> processed = new LinkedList<>();
-
-                for (TcpDiscoveryNode n : rmts) {
-                    assert n.visible();
-
-                    processed.add(n);
-
-                    Collection<ClusterNode> top = F.viewReadOnly(rmts, F.<ClusterNode>identity(), F.notIn(processed));
-
-                    topVer++;
-
-                    Map<Long, Collection<ClusterNode>> hist = updateTopologyHistory(topVer, top);
-
-                    lsnr.onDiscovery(EVT_NODE_FAILED, topVer, n, top, hist);
-                }
-            }
-        }
-
-        printStatistics();
-
-        stats.clear();
-
-        synchronized (mux) {
-            // Clear stored data.
-            leavingNodes.clear();
-            failedNodes.clear();
-
-            spiState = DISCONNECTED;
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override protected void onContextDestroyed0() {
-        super.onContextDestroyed0();
-
-        if (ctxInitLatch.getCount() > 0)
-            // Safety.
-            ctxInitLatch.countDown();
-
-        getSpiContext().deregisterPorts();
-    }
-
-    /**
-     * @throws org.apache.ignite.spi.IgniteSpiException If any error occurs.
-     * @return {@code true} if IP finder contains local address.
-     */
-    private boolean ipFinderHasLocalAddress() throws IgniteSpiException {
-        for (InetSocketAddress locAddr : locNodeAddrs) {
-            for (InetSocketAddress addr : registeredAddresses())
-                try {
-                    int port = addr.getPort();
-
-                    InetSocketAddress resolved = addr.isUnresolved() ?
-                        new InetSocketAddress(InetAddress.getByName(addr.getHostName()), port) :
-                        new InetSocketAddress(addr.getAddress(), port);
-
-                    if (resolved.equals(locAddr))
-                        return true;
-                }
-                catch (UnknownHostException ignored) {
-                    // No-op.
-                }
-        }
-
-        return false;
-    }
-
-    /** {@inheritDoc} */
-    @Override public boolean pingNode(UUID nodeId) {
-        assert nodeId != null;
-
-        if (nodeId == locNodeId)
-            return true;
-
-        TcpDiscoveryNode node = ring.node(nodeId);
-
-        if (node == null || !node.visible())
-            return false;
-
-        boolean res = pingNode(node);
-
-        if (!res && !node.isClient()) {
-            LT.warn(log, null, "Failed to ping node (status check will be initiated): " + nodeId);
-
-            msgWorker.addMessage(new TcpDiscoveryStatusCheckMessage(locNode, node.id()));
-        }
-
-        return res;
-    }
-
-    /**
-     * Pings the remote node to see if it's alive.
-     *
-     * @param node Node.
-     * @return {@code True} if ping succeeds.
-     */
-    private boolean pingNode(TcpDiscoveryNode node) {
-        assert node != null;
-
-        if (node.id().equals(locNodeId))
-            return true;
-
-        UUID clientNodeId = null;
-
-        if (node.isClient()) {
-            clientNodeId = node.id();
-
-            node = ring.node(node.clientRouterNodeId());
-
-            if (node == null || !node.visible())
-                return false;
-        }
-
-        for (InetSocketAddress addr : getNodeAddresses(node, U.sameMacs(locNode, node))) {
-            try {
-                // ID returned by the node should be the same as ID of the parameter for ping to succeed.
-                IgniteBiTuple<UUID, Boolean> t = pingNode(addr, clientNodeId);
-
-                return node.id().equals(t.get1()) && (clientNodeId == null || t.get2());
-            }
-            catch (GridException e) {
-                if (log.isDebugEnabled())
-                    log.debug("Failed to ping node [node=" + node + ", err=" + e.getMessage() + ']');
-
-                // continue;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Pings the remote node by its address to see if it's alive.
-     *
-     * @param addr Address of the node.
-     * @return ID of the remote node if node alive.
-     * @throws org.apache.ignite.spi.IgniteSpiException If an error occurs.
-     */
-    private IgniteBiTuple<UUID, Boolean> pingNode(InetSocketAddress addr, @Nullable UUID clientNodeId)
-        throws GridException {
-        assert addr != null;
-
-        if (F.contains(locNodeAddrs, addr))
-            return F.t(locNodeId, false);
-
-        GridFutureAdapterEx<IgniteBiTuple<UUID, Boolean>> fut = new GridFutureAdapterEx<>();
-
-        IgniteFuture<IgniteBiTuple<UUID, Boolean>> oldFut = pingMap.putIfAbsent(addr, fut);
-
-        if (oldFut != null)
-            return oldFut.get();
-        else {
-            Collection<Throwable> errs = null;
-
-            try {
-                Socket sock = null;
-
-                for (int i = 0; i < reconCnt; i++) {
-                    try {
-                        if (addr.isUnresolved())
-                            addr = new InetSocketAddress(InetAddress.getByName(addr.getHostName()), addr.getPort());
-
-                        long tstamp = U.currentTimeMillis();
-
-                        sock = openSocket(addr);
-
-                        writeToSocket(sock, new TcpDiscoveryPingRequest(locNodeId, clientNodeId));
-
-                        TcpDiscoveryPingResponse res = readMessage(sock, null, netTimeout);
-
-                        if (locNodeId.equals(res.creatorNodeId())) {
-                            if (log.isDebugEnabled())
-                                log.debug("Ping response from local node: " + res);
-
-                            break;
-                        }
-
-                        stats.onClientSocketInitialized(U.currentTimeMillis() - tstamp);
-
-                        IgniteBiTuple<UUID, Boolean> t = F.t(res.creatorNodeId(), res.clientExists());
-
-                        fut.onDone(t);
-
-                        return t;
-                    }
-                    catch (IOException | GridException e) {
-                        if (errs == null)
-                            errs = new ArrayList<>();
-
-                        errs.add(e);
-                    }
-                    finally {
-                        U.closeQuiet(sock);
-                    }
-                }
-            }
-            catch (Throwable t) {
-                fut.onDone(t);
-
-                throw U.cast(t);
-            }
-            finally {
-                if (!fut.isDone())
-                    fut.onDone(U.exceptionWithSuppressed("Failed to ping node by address: " + addr, errs));
-
-                boolean b = pingMap.remove(addr, fut);
-
-                assert b;
-            }
-
-            return fut.get();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void disconnect() throws IgniteSpiException {
-        spiStop0(true);
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setAuthenticator(DiscoverySpiNodeAuthenticator nodeAuth) {
-        this.nodeAuth = nodeAuth;
-    }
-
-    /**
-     * Tries to join this node to topology.
-     *
-     * @throws org.apache.ignite.spi.IgniteSpiException If any error occurs.
-     */
-    private void joinTopology() throws IgniteSpiException {
-        synchronized (mux) {
-            assert spiState == CONNECTING || spiState == DISCONNECTED;
-
-            spiState = CONNECTING;
-        }
-
-        GridSecurityCredentials locCred = (GridSecurityCredentials)locNode.getAttributes()
-            .get(GridNodeAttributes.ATTR_SECURITY_CREDENTIALS);
-
-        // Marshal credentials for backward compatibility and security.
-        marshalCredentials(locNode);
-
-        while (true) {
-            if (!sendJoinRequestMessage()) {
-                if (log.isDebugEnabled())
-                    log.debug("Join request message has not been sent (local node is the first in the topology).");
-
-                // Authenticate local node.
-                try {
-                    GridSecurityContext subj = nodeAuth.authenticateNode(locNode, locCred);
-
-                    if (subj == null)
-                        throw new IgniteSpiException("Authentication failed for local node: " + locNode.id());
-
-                    Map<String, Object> attrs = new HashMap<>(locNode.attributes());
-
-                    attrs.put(GridNodeAttributes.ATTR_SECURITY_SUBJECT, gridMarsh.marshal(subj));
-                    attrs.remove(GridNodeAttributes.ATTR_SECURITY_CREDENTIALS);
-
-                    locNode.setAttributes(attrs);
-                }
-                catch (GridException e) {
-                    throw new IgniteSpiException("Failed to authenticate local node (will shutdown local node).", e);
-                }
-
-                locNode.order(1);
-                locNode.internalOrder(1);
-
-                gridStartTime = U.currentTimeMillis();
-
-                locNode.visible(true);
-
-                ring.clear();
-
-                ring.topologyVersion(1);
-
-                synchronized (mux) {
-                    topHist.clear();
-
-                    spiState = CONNECTED;
-
-                    mux.notifyAll();
-                }
-
-                notifyDiscovery(EVT_NODE_JOINED, 1, locNode);
-
-                break;
-            }
-
-            if (log.isDebugEnabled())
-                log.debug("Join request message has been sent (waiting for coordinator response).");
-
-            synchronized (mux) {
-                long threshold = U.currentTimeMillis() + netTimeout;
-
-                long timeout = netTimeout;
-
-                while (spiState == CONNECTING && timeout > 0) {
-                    try {
-                        mux.wait(timeout);
-
-                        timeout = threshold - U.currentTimeMillis();
-                    }
-                    catch (InterruptedException ignored) {
-                        Thread.currentThread().interrupt();
-
-                        throw new IgniteSpiException("Thread has been interrupted.");
-                    }
-                }
-
-                if (spiState == CONNECTED)
-                    break;
-                else if (spiState == DUPLICATE_ID)
-                    throw duplicateIdError((TcpDiscoveryDuplicateIdMessage)joinRes.get());
-                else if (spiState == AUTH_FAILED)
-                    throw authenticationFailedError((TcpDiscoveryAuthFailedMessage)joinRes.get());
-                else if (spiState == CHECK_FAILED)
-                    throw checkFailedError((TcpDiscoveryCheckFailedMessage)joinRes.get());
-                else if (spiState == LOOPBACK_PROBLEM) {
-                    TcpDiscoveryLoopbackProblemMessage msg = (TcpDiscoveryLoopbackProblemMessage)joinRes.get();
-
-                    boolean locHostLoopback = locHost.isLoopbackAddress();
-
-                    String firstNode = locHostLoopback ? "local" : "remote";
-
-                    String secondNode = locHostLoopback ? "remote" : "local";
-
-                    throw new IgniteSpiException("Failed to add node to topology because " + firstNode +
-                        " node is configured to use loopback address, but " + secondNode + " node is not " +
-                        "(consider changing 'localAddress' configuration parameter) " +
-                        "[locNodeAddrs=" + U.addressesAsString(locNode) + ", rmtNodeAddrs=" +
-                        U.addressesAsString(msg.addresses(), msg.hostNames()) + ']');
-                }
-                else
-                    LT.warn(log, null, "Node has not been connected to topology and will repeat join process. " +
-                        "Check remote nodes logs for possible error messages. " +
-                        "Note that large topology may require significant time to start. " +
-                        "Increase 'GridTcpDiscoverySpi.networkTimeout' configuration property " +
-                        "if getting this message on the starting nodes [networkTimeout=" + netTimeout + ']');
-            }
-        }
-
-        assert locNode.order() != 0;
-        assert locNode.internalOrder() != 0;
-
-        if (log.isDebugEnabled())
-            log.debug("Discovery SPI has been connected to topology with order: " + locNode.internalOrder());
-    }
-
-    /**
-     * @param msg Error message.
-     * @return Remote grid version parsed from error message.
-     * @deprecated This method was created for preserving backward compatibility. During major version update
-     *      parsing of error message should be replaced with new {@link org.gridgain.grid.spi.discovery.tcp.messages.TcpDiscoveryCheckFailedMessage}
-     *      which contains all necessary information.
-     */
-    @Deprecated
-    @Nullable private String parseRemoteVersion(String msg) {
-        msg = msg.replaceAll("\\s", "");
-
-        final String verPrefix = "rmtBuildVer=";
-
-        int startIdx = msg.indexOf(verPrefix);
-        int endIdx = msg.indexOf(',', startIdx);
-
-        if (endIdx < 0)
-            endIdx = msg.indexOf(']', startIdx);
-
-        if (startIdx < 0 || endIdx < 0)
-            return null;
-
-        return msg.substring(startIdx + verPrefix.length() - 1, endIdx);
-    }
-
-    /**
-     * Tries to send join request message to a random node presenting in topology.
-     * Address is provided by {@link org.gridgain.grid.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder} and message is
-     * sent to first node connection succeeded to.
-     *
-     * @return {@code true} if send succeeded.
-     * @throws org.apache.ignite.spi.IgniteSpiException If any error occurs.
-     */
-    @SuppressWarnings({"BusyWait"})
-    private boolean sendJoinRequestMessage() throws IgniteSpiException {
-        TcpDiscoveryAbstractMessage joinReq = new TcpDiscoveryJoinRequestMessage(locNode,
-            exchange.collect(locNodeId));
-
-        // Time when it has been detected, that addresses from IP finder do not respond.
-        long noResStart = 0;
-
-        while (true) {
-            Collection<InetSocketAddress> addrs = resolvedAddresses();
-
-            if (F.isEmpty(addrs))
-                return false;
-
-            boolean retry = false;
-            GridException errs = null;
-
-            for (InetSocketAddress addr : addrs) {
-                try {
-                    Integer res = sendMessageDirectly(joinReq, addr);
-
-                    assert res != null;
-
-                    noResAddrs.remove(addr);
-
-                    // Address is responsive, reset period start.
-                    noResStart = 0;
-
-                    switch (res) {
-                        case RES_WAIT:
-                            // Concurrent startup, try sending join request again or wait if no success.
-                            retry = true;
-
-                            break;
-                        case RES_OK:
-                            if (log.isDebugEnabled())
-                                log.debug("Join request message has been sent to address [addr=" + addr +
-                                    ", req=" + joinReq + ']');
-
-                            // Join request sending succeeded, wait for response from topology.
-                            return true;
-
-                        default:
-                            // Concurrent startup, try next node.
-                            if (res == RES_CONTINUE_JOIN) {
-                                if (!fromAddrs.contains(addr))
-                                    retry = true;
-                            }
-                            else {
-                                if (log.isDebugEnabled())
-                                    log.debug("Unexpected response to join request: " + res);
-
-                                retry = true;
-                            }
-
-                            break;
-                    }
-                }
-                catch (IgniteSpiException e) {
-                    if (errs == null)
-                        errs = new GridException("Multiple connection attempts failed.");
-
-                    errs.addSuppressed(e);
-
-                    if (log.isDebugEnabled()) {
-                        IOException ioe = X.cause(e, IOException.class);
-
-                        log.debug("Failed to send join request message [addr=" + addr +
-                            ", msg=" + ioe != null ? ioe.getMessage() : e.getMessage() + ']');
-                    }
-
-                    noResAddrs.add(addr);
-                }
-            }
-
-            if (retry) {
-                if (log.isDebugEnabled())
-                    log.debug("Concurrent discovery SPI start has been detected (local node should wait).");
-
-                try {
-                    U.sleep(2000);
-                }
-                catch (GridInterruptedException e) {
-                    throw new IgniteSpiException("Thread has been interrupted.", e);
-                }
-            }
-            else if (!ipFinder.isShared() && !ipFinderHasLocAddr) {
-                if (errs != null && X.hasCause(errs, ConnectException.class))
-                    LT.warn(log, null, "Failed to connect to any address from IP finder " +
-                        "(make sure IP finder addresses are correct and firewalls are disabled on all host machines): " +
-                        addrs);
-
-                if (joinTimeout > 0) {
-                    if (noResStart == 0)
-                        noResStart = U.currentTimeMillis();
-                    else if (U.currentTimeMillis() - noResStart > joinTimeout)
-                        throw new IgniteSpiException(
-                            "Failed to connect to any address from IP finder within join timeout " +
-                                "(make sure IP finder addresses are correct, and operating system firewalls are disabled " +
-                                "on all host machines, or consider increasing 'joinTimeout' configuration property): " +
-                                addrs, errs);
-                }
-
-                try {
-                    U.sleep(2000);
-                }
-                catch (GridInterruptedException e) {
-                    throw new IgniteSpiException("Thread has been interrupted.", e);
-                }
-            }
-            else
-                break;
-        }
-
-        return false;
-    }
-
-    /**
-     * Establishes connection to an address, sends message and returns the response (if any).
-     *
-     * @param msg Message to send.
-     * @param addr Address to send message to.
-     * @return Response read from the recipient or {@code null} if no response is supposed.
-     * @throws org.apache.ignite.spi.IgniteSpiException If an error occurs.
-     */
-    @Nullable private Integer sendMessageDirectly(TcpDiscoveryAbstractMessage msg, InetSocketAddress addr)
-        throws IgniteSpiException {
-        assert msg != null;
-        assert addr != null;
-
-        Collection<Throwable> errs = null;
-
-        Socket sock = null;
-
-        long ackTimeout0 = ackTimeout;
-
-        int connectAttempts = 1;
-
-        boolean joinReqSent = false;
-
-        for (int i = 0; i < reconCnt; i++) {
-            // Need to set to false on each new iteration,
-            // since remote node may leave in the middle of the first iteration.
-            joinReqSent = false;
-
-            boolean openSock = false;
-
-            try {
-                long tstamp = U.currentTimeMillis();
-
-                sock = openSocket(addr);
-
-                openSock = true;
-
-                // Handshake.
-                writeToSocket(sock, new TcpDiscoveryHandshakeRequest(locNodeId));
-
-                TcpDiscoveryHandshakeResponse res = readMessage(sock, null, ackTimeout0);
-
-                if (locNodeId.equals(res.creatorNodeId())) {
-                    if (log.isDebugEnabled())
-                        log.debug("Handshake response from local node: " + res);
-
-                    break;
-                }
-
-                stats.onClientSocketInitialized(U.currentTimeMillis() - tstamp);
-
-                // Send message.
-                tstamp = U.currentTimeMillis();
-
-                writeToSocket(sock, msg);
-
-                stats.onMessageSent(msg, U.currentTimeMillis() - tstamp);
-
-                if (debugMode)
-                    debugLog("Message has been sent directly to address [msg=" + msg + ", addr=" + addr +
-                        ", rmtNodeId=" + res.creatorNodeId() + ']');
-
-                if (log.isDebugEnabled())
-                    log.debug("Message has been sent directly to address [msg=" + msg + ", addr=" + addr +
-                        ", rmtNodeId=" + res.creatorNodeId() + ']');
-
-                // Connection has been established, but
-                // join request may not be unmarshalled on remote host.
-                // E.g. due to class not found issue.
-                joinReqSent = msg instanceof TcpDiscoveryJoinRequestMessage;
-
-                return readReceipt(sock, ackTimeout0);
-            }
-            catch (ClassCastException e) {
-                // This issue is rarely reproducible on AmazonEC2, but never
-                // on dedicated machines.
-                if (log.isDebugEnabled())
-                    U.error(log, "Class cast exception on direct send: " + addr, e);
-
-                if (errs == null)
-                    errs = new ArrayList<>();
-
-                errs.add(e);
-            }
-            catch (IOException | GridException e) {
-                if (log.isDebugEnabled())
-                    log.error("Exception on direct send: " + e.getMessage(), e);
-
-                if (errs == null)
-                    errs = new ArrayList<>();
-
-                errs.add(e);
-
-                if (!openSock) {
-                    // Reconnect for the second time, if connection is not established.
-                    if (connectAttempts < 2) {
-                        connectAttempts++;
-
-                        continue;
-                    }
-
-                    break; // Don't retry if we can not establish connection.
-                }
-
-                if (e instanceof SocketTimeoutException || X.hasCause(e, SocketTimeoutException.class)) {
-                    ackTimeout0 *= 2;
-
-                    if (!checkAckTimeout(ackTimeout0))
-                        break;
-                }
-            }
-            finally {
-                U.closeQuiet(sock);
-            }
-        }
-
-        if (joinReqSent) {
-            if (log.isDebugEnabled())
-                log.debug("Join request has been sent, but receipt has not been read (returning RES_WAIT).");
-
-            // Topology will not include this node,
-            // however, warning on timed out join will be output.
-            return RES_OK;
-        }
-
-        throw new IgniteSpiException(
-            "Failed to send message to address [addr=" + addr + ", msg=" + msg + ']',
-            U.exceptionWithSuppressed("Failed to send message to address " +
-                "[addr=" + addr + ", msg=" + msg + ']', errs));
-    }
-
-    /**
-     * Marshalls credentials with discovery SPI marshaller (will replace attribute value).
-     *
-     * @param node Node to marshall credentials for.
-     * @throws org.apache.ignite.spi.IgniteSpiException If marshalling failed.
-     */
-    private void marshalCredentials(TcpDiscoveryNode node) throws IgniteSpiException {
-        try {
-            // Use security-unsafe getter.
-            Map<String, Object> attrs = new HashMap<>(node.getAttributes());
-
-            attrs.put(GridNodeAttributes.ATTR_SECURITY_CREDENTIALS,
-                marsh.marshal(attrs.get(GridNodeAttributes.ATTR_SECURITY_CREDENTIALS)));
-
-            node.setAttributes(attrs);
-        }
-        catch (GridException e) {
-            throw new IgniteSpiException("Failed to marshal node security credentials: " + node.id(), e);
-        }
-    }
-
-    /**
-     * Unmarshalls credentials with discovery SPI marshaller (will not replace attribute value).
-     *
-     * @param node Node to unmarshall credentials for.
-     * @return Security credentials.
-     * @throws org.apache.ignite.spi.IgniteSpiException If unmarshal fails.
-     */
-    private GridSecurityCredentials unmarshalCredentials(TcpDiscoveryNode node) throws IgniteSpiException {
-        try {
-            byte[] credBytes = (byte[])node.getAttributes().get(GridNodeAttributes.ATTR_SECURITY_CREDENTIALS);
-
-            if (credBytes == null)
-                return null;
-
-            return marsh.unmarshal(credBytes, null);
-        }
-        catch (GridException e) {
-            throw new IgniteSpiException("Failed to unmarshal node security credentials: " + node.id(), e);
-        }
-    }
-
-    /**
-     * @param ackTimeout Acknowledgement timeout.
-     * @return {@code True} if acknowledgement timeout is less or equal to
-     * maximum acknowledgement timeout, {@code false} otherwise.
-     */
-    private boolean checkAckTimeout(long ackTimeout) {
-        if (ackTimeout > maxAckTimeout) {
-            LT.warn(log, null, "Acknowledgement timeout is greater than maximum acknowledgement timeout " +
-                "(consider increasing 'maxAckTimeout' configuration property) " +
-                "[ackTimeout=" + ackTimeout + ", maxAckTimeout=" + maxAckTimeout + ']');
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Notify external listener on discovery event.
-     *
-     * @param type Discovery event type. See {@link org.apache.ignite.events.IgniteDiscoveryEvent} for more details.
-     * @param topVer Topology version.
-     * @param node Remote node this event is connected with.
-     */
-    private void notifyDiscovery(int type, long topVer, TcpDiscoveryNode node) {
-        assert type > 0;
-        assert node != null;
-
-        DiscoverySpiListener lsnr = this.lsnr;
-
-        TcpDiscoverySpiState spiState = spiStateCopy();
-
-        if (lsnr != null && node.visible() && (spiState == CONNECTED || spiState == DISCONNECTING)) {
-            if (log.isDebugEnabled())
-                log.debug("Discovery notification [node=" + node + ", spiState=" + spiState +
-                    ", type=" + U.gridEventName(type) + ", topVer=" + topVer + ']');
-
-            Collection<ClusterNode> top = F.<TcpDiscoveryNode, ClusterNode>upcast(ring.visibleNodes());
-
-            Map<Long, Collection<ClusterNode>> hist = updateTopologyHistory(topVer, top);
-
-            lsnr.onDiscovery(type, topVer, node, top, hist);
-        }
-        else if (log.isDebugEnabled())
-            log.debug("Skipped discovery notification [node=" + node + ", spiState=" + spiState +
-                ", type=" + U.gridEventName(type) + ", topVer=" + topVer + ']');
-    }
-
-    /**
-     * Update topology history with new topology snapshots.
-     *
-     * @param topVer Topology version.
-     * @param top Topology snapshot.
-     * @return Copy of updated topology history.
-     */
-    @Nullable private Map<Long, Collection<ClusterNode>> updateTopologyHistory(long topVer, Collection<ClusterNode> top) {
-        synchronized (mux) {
-            if (topHist.containsKey(topVer))
-                return null;
-
-            topHist.put(topVer, top);
-
-            while (topHist.size() > topHistSize)
-                topHist.remove(topHist.firstKey());
-
-            if (log.isDebugEnabled())
-                log.debug("Added topology snapshot to history, topVer=" + topVer + ", historySize=" + topHist.size());
-
-            return new TreeMap<>(topHist);
-        }
-    }
-
-    /**
-     * @param node Node.
-     * @return {@link LinkedHashSet} of internal and external addresses of provided node.
-     *      Internal addresses placed before external addresses.
-     */
-    @SuppressWarnings("TypeMayBeWeakened")
-    private LinkedHashSet<InetSocketAddress> getNodeAddresses(TcpDiscoveryNode node) {
-        LinkedHashSet<InetSocketAddress> res = new LinkedHashSet<>(node.socketAddresses());
-
-        Collection<InetSocketAddress> extAddrs = node.attribute(createSpiAttributeName(ATTR_EXT_ADDRS));
-
-        if (extAddrs != null)
-            res.addAll(extAddrs);
-
-        return res;
-    }
-
-    /**
-     * @param node Node.
-     * @param sameHost Same host flag.
-     * @return {@link LinkedHashSet} of internal and external addresses of provided node.
-     *      Internal addresses placed before external addresses.
-     *      Internal addresses will be sorted with {@code inetAddressesComparator(sameHost)}.
-     */
-    @SuppressWarnings("TypeMayBeWeakened")
-    private LinkedHashSet<InetSocketAddress> getNodeAddresses(TcpDiscoveryNode node, boolean sameHost) {
-        List<InetSocketAddress> addrs = U.arrayList(node.socketAddresses());
-
-        Collections.sort(addrs, U.inetAddressesComparator(sameHost));
-
-        LinkedHashSet<InetSocketAddress> res = new LinkedHashSet<>(addrs);
-
-        Collection<InetSocketAddress> extAddrs = node.attribute(createSpiAttributeName(ATTR_EXT_ADDRS));
-
-        if (extAddrs != null)
-            res.addAll(extAddrs);
-
-        return res;
-    }
-
-    /**
-     * Checks whether local node is coordinator. Nodes that are leaving or failed
-     * (but are still in topology) are removed from search.
-     *
-     * @return {@code true} if local node is coordinator.
-     */
-    private boolean isLocalNodeCoordinator() {
-        synchronized (mux) {
-            boolean crd = spiState == CONNECTED && locNode.equals(resolveCoordinator());
-
-            if (crd)
-                stats.onBecomingCoordinator();
-
-            return crd;
-        }
-    }
-
-    /**
-     * @return Spi state copy.
-     */
-    private TcpDiscoverySpiState spiStateCopy() {
-        TcpDiscoverySpiState state;
-
-        synchronized (mux) {
-            state = spiState;
-        }
-
-        return state;
-    }
-
-    /**
-     * Resolves coordinator. Nodes that are leaving or failed (but are still in
-     * topology) are removed from search.
-     *
-     * @return Coordinator node or {@code null} if there are no coordinator
-     * (i.e. local node is the last one and is currently stopping).
-     */
-    @Nullable private TcpDiscoveryNode resolveCoordinator() {
-        return resolveCoordinator(null);
-    }
-
-    /**
-     * Resolves coordinator. Nodes that are leaving or failed (but are still in
-     * topology) are removed from search as well as provided filter.
-     *
-     * @param filter Nodes to exclude when resolving coordinator (optional).
-     * @return Coordinator node or {@code null} if there are no coordinator
-     * (i.e. local node is the last one and is currently stopping).
-     */
-    @Nullable private TcpDiscoveryNode resolveCoordinator(
-        @Nullable Collection<TcpDiscoveryNode> filter) {
-        synchronized (mux) {
-            Collection<TcpDiscoveryNode> excluded = F.concat(false, failedNodes, leavingNodes);
-
-            if (!F.isEmpty(filter))
-                excluded = F.concat(false, excluded, filter);
-
-            return ring.coordinator(excluded);
-        }
-    }
-
-    /**
-     * Prints SPI statistics.
-     */
-    private void printStatistics() {
-        if (log.isInfoEnabled() && statsPrintFreq > 0) {
-            int failedNodesSize;
-            int leavingNodesSize;
-
-            synchronized (mux) {
-                failedNodesSize = failedNodes.size();
-                leavingNodesSize = leavingNodes.size();
-            }
-
-            Runtime runtime = Runtime.getRuntime();
-
-            TcpDiscoveryNode coord = resolveCoordinator();
-
-            log.info("Discovery SPI statistics [statistics=" + stats + ", spiState=" + spiStateCopy() +
-                ", coord=" + coord +
-                ", topSize=" + ring.allNodes().size() +
-                ", leavingNodesSize=" + leavingNodesSize + ", failedNodesSize=" + failedNodesSize +
-                ", msgWorker.queue.size=" + (msgWorker != null ? msgWorker.queueSize() : "N/A") +
-                ", lastUpdate=" + (locNode != null ? U.format(locNode.lastUpdateTime()) : "N/A") +
-                ", heapFree=" + runtime.freeMemory() / (1024 * 1024) +
-                "M, heapTotal=" + runtime.maxMemory() / (1024 * 1024) + "M]");
-        }
-    }
-
-    /**
-     * @param msg Message to prepare.
-     * @param destNodeId Destination node ID.
-     * @param msgs Messages to include.
-     * @param discardMsgId Discarded message ID.
-     */
-    private void prepareNodeAddedMessage(TcpDiscoveryAbstractMessage msg, UUID destNodeId,
-        @Nullable Collection<TcpDiscoveryAbstractMessage> msgs, @Nullable IgniteUuid discardMsgId) {
-        assert destNodeId != null;
-
-        if (msg instanceof TcpDiscoveryNodeAddedMessage) {
-            TcpDiscoveryNodeAddedMessage nodeAddedMsg = (TcpDiscoveryNodeAddedMessage)msg;
-
-            TcpDiscoveryNode node = nodeAddedMsg.node();
-
-            if (node.id().equals(destNodeId)) {
-                Collection<TcpDiscoveryNode> allNodes = ring.allNodes();
-                Collection<TcpDiscoveryNode> topToSend = new ArrayList<>(allNodes.size());
-
-                for (TcpDiscoveryNode n0 : allNodes) {
-                    assert n0.internalOrder() != 0 : n0;
-
-                    // Skip next node and nodes added after next
-                    // in case this message is resent due to failures/leaves.
-                    // There will be separate messages for nodes with greater
-                    // internal order.
-                    if (n0.internalOrder() < nodeAddedMsg.node().internalOrder())
-                        topToSend.add(n0);
-                }
-
-                nodeAddedMsg.topology(topToSend);
-                nodeAddedMsg.messages(msgs, discardMsgId);
-
-                Map<Long, Collection<ClusterNode>> hist;
-
-                synchronized (mux) {
-                    hist = new TreeMap<>(topHist);
-                }
-
-                nodeAddedMsg.topologyHistory(hist);
-            }
-        }
-    }
-
-    /**
-     * @param msg Message to clear.
-     */
-    private void clearNodeAddedMessage(TcpDiscoveryAbstractMessage msg) {
-        if (msg instanceof TcpDiscoveryNodeAddedMessage) {
-            // Nullify topology before registration.
-            TcpDiscoveryNodeAddedMessage nodeAddedMsg = (TcpDiscoveryNodeAddedMessage)msg;
-
-            nodeAddedMsg.topology(null);
-            nodeAddedMsg.topologyHistory(null);
-            nodeAddedMsg.messages(null, null);
-        }
-    }
-
-    /**
-     * <strong>FOR TEST ONLY!!!</strong>
-     * <p>
-     * Simulates this node failure by stopping service threads. So, node will become
-     * unresponsive.
-     * <p>
-     * This method is intended for test purposes only.
-     */
-    void simulateNodeFailure() {
-        U.warn(log, "Simulating node failure: " + locNodeId);
-
-        U.interrupt(tcpSrvr);
-        U.join(tcpSrvr, log);
-
-        U.interrupt(hbsSnd);
-        U.join(hbsSnd, log);
-
-        U.interrupt(chkStatusSnd);
-        U.join(chkStatusSnd, log);
-
-        U.interrupt(ipFinderCleaner);
-        U.join(ipFinderCleaner, log);
-
-        Collection<SocketReader> tmp;
-
-        synchronized (mux) {
-            tmp = U.arrayList(readers);
-        }
-
-        U.interrupt(tmp);
-        U.joinThreads(tmp, log);
-
-        U.interrupt(msgWorker);
-        U.join(msgWorker, log);
-
-        U.interrupt(statsPrinter);
-        U.join(statsPrinter, log);
-    }
-
-    /**
-     * <strong>FOR TEST ONLY!!!</strong>
-     * <p>
-     * Simulates situation when next node is still alive but is bypassed
-     * since it has been excluded from the ring, possibly, due to short time
-     * network problems.
-     * <p>
-     * This method is intended for test purposes only.
-     */
-    void forceNextNodeFailure() {
-        U.warn(log, "Next node will be forcibly failed (if any).");
-
-        TcpDiscoveryNode next;
-
-        synchronized (mux) {
-            next = ring.nextNode(failedNodes);
-        }
-
-        if (next != null)
-            msgWorker.addMessage(new TcpDiscoveryNodeFailedMessage(locNodeId, next.id(), next.internalOrder()));
-    }
-
-    /**
-     * <strong>FOR TEST ONLY!!!</strong>
-     * <p>
-     * This method is intended for test purposes only.
-     *
-     * @param msg Message.
-     */
-    void onBeforeMessageSentAcrossRing(Serializable msg) {
-        // No-op.
-    }
-
-    /**
-     * <strong>FOR TEST ONLY!!!</strong>
-     * <p>
-     * This method is intended for test purposes only.
-     *
-     * @return Nodes ring.
-     */
-    TcpDiscoveryNodesRing ring() {
-        return ring;
-    }
-
-    /** {@inheritDoc} */
-    @Override public void dumpDebugInfo() {
-        dumpDebugInfo(log);
-    }
-
-    /**
-     * @param log Logger.
-     */
-    public void dumpDebugInfo(IgniteLogger log) {
-        if (!debugMode) {
-            U.quietAndWarn(log, "Failed to dump debug info (discovery SPI was not configured " +
-                "in debug mode, consider setting 'debugMode' configuration property to 'true').");
-
-            return;
-        }
-
-        assert log.isInfoEnabled();
-
-        synchronized (mux) {
-            StringBuilder b = new StringBuilder(U.nl());
-
-            b.append(">>>").append(U.nl());
-            b.append(">>>").append("Dumping discovery SPI debug info.").append(U.nl());
-            b.append(">>>").append(U.nl());
-
-            b.append("Local node ID: ").append(locNodeId).append(U.nl()).append(U.nl());
-            b.append("Local node: ").append(locNode).append(U.nl()).append(U.nl());
-            b.append("SPI state: ").append(spiState).append(U.nl()).append(U.nl());
-
-            b.append("Internal threads: ").append(U.nl());
-
-            b.append("    Message worker: ").append(threadStatus(msgWorker)).append(U.nl());
-            b.append("    Check status sender: ").append(threadStatus(chkStatusSnd)).append(U.nl());
-            b.append("    HB sender: ").append(threadStatus(hbsSnd)).append(U.nl());
-            b.append("    Socket timeout worker: ").append(threadStatus(sockTimeoutWorker)).append(U.nl());
-            b.append("    IP finder cleaner: ").append(threadStatus(ipFinderCleaner)).append(U.nl());
-            b.append("    Stats printer: ").append(threadStatus(statsPrinter)).append(U.nl());
-
-            b.append(U.nl());
-
-            b.append("Socket readers: ").append(U.nl());
-
-            for (SocketReader rdr : readers)
-                b.append("    ").append(rdr).append(U.nl());
-
-            b.append(U.nl());
-
-            b.append("In-memory log messages: ").append(U.nl());
-
-            for (String msg : debugLog)
-                b.append("    ").append(msg).append(U.nl());
-
-            b.append(U.nl());
-
-            b.append("Leaving nodes: ").append(U.nl());
-
-            for (TcpDiscoveryNode node : leavingNodes)
-                b.append("    ").append(node.id()).append(U.nl());
-
-            b.append(U.nl());
-
-            b.append("Failed nodes: ").append(U.nl());
-
-            for (TcpDiscoveryNode node : failedNodes)
-                b.append("    ").append(node.id()).append(U.nl());
-
-            b.append(U.nl());
-
-            b.append("Stats: ").append(stats).append(U.nl());
-
-            U.quietAndInfo(log, b.toString());
-        }
-    }
-
-    /**
-     * @param msg Message.
-     */
-    private void debugLog(String msg) {
-        assert debugMode;
-
-        String msg0 = new SimpleDateFormat("[HH:mm:ss,SSS]").format(new Date(System.currentTimeMillis())) +
-            '[' + Thread.currentThread().getName() + "][" + locNodeId + "-" + locNode.internalOrder() + "] " +
-            msg;
-
-        debugLog.add(msg0);
-
-        int delta = debugLog.size() - debugMsgHist;
-
-        for (int i = 0; i < delta && debugLog.size() > debugMsgHist; i++)
-            debugLog.poll();
-    }
-
-    /**
-     * @param msg Message.
-     * @return {@code True} if recordable in debug mode.
-     */
-    private boolean recordable(TcpDiscoveryAbstractMessage msg) {
-        return !(msg instanceof TcpDiscoveryHeartbeatMessage) &&
-            !(msg instanceof TcpDiscoveryStatusCheckMessage) &&
-            !(msg instanceof TcpDiscoveryDiscardMessage);
-    }
-
-    /**
-     * @param t Thread.
-     * @return Status as string.
-     */
-    private String threadStatus(Thread t) {
-        if (t == null)
-            return "N/A";
-
-        return t.isAlive() ? "alive" : "dead";
-    }
-
-    /**
-     * Checks if two given {@link GridSecurityPermissionSet} objects contain the same permissions.
-     * Each permission belongs to one of three groups : cache, task or system.
-     *
-     * @param locPerms The first set of permissions.
-     * @param rmtPerms The second set of permissions.
-     * @return {@code True} if given parameters contain the same permissions, {@code False} otherwise.
-     */
-    private boolean permissionsEqual(GridSecurityPermissionSet locPerms, GridSecurityPermissionSet rmtPerms) {
-        boolean dfltAllowMatch = !(locPerms.defaultAllowAll() ^ rmtPerms.defaultAllowAll());
-
-        boolean bothHaveSamePerms = F.eqNotOrdered(rmtPerms.systemPermissions(), locPerms.systemPermissions()) &&
-            F.eqNotOrdered(rmtPerms.cachePermissions(), locPerms.cachePermissions()) &&
-            F.eqNotOrdered(rmtPerms.taskPermissions(), locPerms.taskPermissions());
-
-        return dfltAllowMatch && bothHaveSamePerms;
-    }
-
-    /** {@inheritDoc} */
-    @Override public String toString() {
-        return S.toString(TcpDiscoverySpi.class, this);
-    }
-
-    /**
-     * Thread that sends heartbeats.
-     */
-    private class HeartbeatsSender extends IgniteSpiThread {
-        /**
-         * Constructor.
-         */
-        private HeartbeatsSender() {
-            super(gridName, "tcp-disco-hb-sender", log);
-
-            setPriority(threadPri);
-        }
-
-        /** {@inheritDoc} */
-        @SuppressWarnings("BusyWait")
-        @Override protected void body() throws InterruptedException {
-            while (!isLocalNodeCoordinator())
-                Thread.sleep(1000);
-
-            if (log.isDebugEnabled())
-                log.debug("Heartbeats sender has been started.");
-
-            while (!isInterrupted()) {
-                if (spiStateCopy() != CONNECTED) {
-                    if (log.isDebugEnabled())
-                        log.debug("Stopping heartbeats sender (SPI is not connected to topology).");
-
-                    return;
-                }
-
-                TcpDiscoveryHeartbeatMessage msg = new TcpDiscoveryHeartbeatMessage(locNodeId);
-
-                msg.verify(locNodeId);
-
-                msgWorker.addMessage(msg);
-
-                Thread.sleep(hbFreq);
-            }
-        }
-    }
-
-    /**
-     * Thread that sends status check messages to next node if local node has not
-     * been receiving heartbeats ({@link org.gridgain.grid.spi.discovery.tcp.messages.TcpDiscoveryHeartbeatMessage})
-     * for {@link TcpDiscoverySpi#getMaxMissedHeartbeats()} *
-     * {@link TcpDiscoverySpi#getHeartbeatFrequency()}.
-     */
-    private class CheckStatusSender extends IgniteSpiThread {
-        /**
-         * Constructor.
-         */
-        private CheckStatusSender() {
-            super(gridName, "tcp-disco-status-check-sender", log);
-
-            setPriority(threadPri);
-        }
-
-        /** {@inheritDoc} */
-        @SuppressWarnings("BusyWait")
-        @Override protected void body() throws InterruptedException {
-            if (log.isDebugEnabled())
-                log.debug("Status check sender has been started.");
-
-            // Only 1 heartbeat missing is acceptable. 1 sec is added to avoid false alarm.
-            long checkTimeout = (long)maxMissedHbs * hbFreq + 1000;
-
-            long lastSent = 0;
-
-            while (!isInterrupted()) {
-                // 1. Determine timeout.
-                if (lastSent < locNode.lastUpdateTime())
-                    lastSent = locNode.lastUpdateTime();
-
-                long timeout = (lastSent + checkTimeout) - U.currentTimeMillis();
-
-                if (timeout > 0)
-                    Thread.sleep(timeout);
-
-                // 2. Check if SPI is still connected.
-                if (spiStateCopy() != CONNECTED) {
-                    if (log.isDebugEnabled())
-                        log.debug("Stopping status check sender (SPI is not connected to topology).");
-
-                    return;
-                }
-
-                // 3. Was there an update?
-                if (locNode.lastUpdateTime() > lastSent || !ring.hasRemoteNodes()) {
-                    if (log.isDebugEnabled())
-                        log.debug("Skipping status check send " +
-                            "[locNodeLastUpdate=" + U.format(locNode.lastUpdateTime()) +
-                            ", hasRmts=" + ring.hasRemoteNodes() + ']');
-
-                    continue;
-                }
-
-                // 4. Send status check message.
-                lastSent = U.currentTimeMillis();
-
-                msgWorker.addMessage(new TcpDiscoveryStatusCheckMessage(locNode, null));
-            }
-        }
-    }
-
-    /**
-     * Thread that cleans IP finder and keeps it in the correct state, unregistering
-     * addresses of the nodes that has left the topology.
-     * <p>
-     * This thread should run only on coordinator node and will clean IP finder
-     * if and only if {@link org.gridgain.grid.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder#isShared()} is {@code true}.
-     */
-    private class IpFinderCleaner extends IgniteSpiThread {
-        /**
-         * Constructor.
-         */
-        private IpFinderCleaner() {
-            super(gridName, "tcp-disco-ip-finder-cleaner", log);
-
-            setPriority(threadPri);
-        }
-
-        /** {@inheritDoc} */
-        @SuppressWarnings("BusyWait")
-        @Override protected void body() throws InterruptedException {
-            if (log.isDebugEnabled())
-                log.debug("IP finder cleaner has been started.");
-
-            while (!isInterrupted()) {
-                Thread.sleep(ipFinderCleanFreq);
-
-                if (!isLocalNodeCoordinator())
-                    continue;
-
-                if (spiStateCopy() != CONNECTED) {
-                    if (log.isDebugEnabled())
-                        log.debug("Stopping IP finder cleaner (SPI is not connected to topology).");
-
-                    return;
-                }
-
-                if (ipFinder.isShared())
-                    cleanIpFinder();
-            }
-        }
-
-        /**
-         * Cleans IP finder.
-         */
-        private void cleanIpFinder() {
-            assert ipFinder.isShared();
-
-            try {
-                // Addresses that belongs to nodes in topology.
-                Collection<InetSocketAddress> currAddrs = F.flatCollections(
-                    F.viewReadOnly(
-                        ring.allNodes(),
-                        new C1<TcpDiscoveryNode, Collection<InetSocketAddress>>() {
-                            @Override public Collection<InetSocketAddress> apply(TcpDiscoveryNode node) {
-                                return !node.isClient() ? getNodeAddresses(node) :
-                                    Collections.<InetSocketAddress>emptyList();
-                            }
-                        }
-                    )
-                );
-
-                // Addresses registered in IP finder.
-                Collection<InetSocketAddress> regAddrs = registeredAddresses();
-
-                // Remove all addresses that belong to alive nodes, leave dead-node addresses.
-                Collection<InetSocketAddress> rmvAddrs = F.view(
-                    regAddrs,
-                    F.notContains(currAddrs),
-                    new P1<InetSocketAddress>() {
-                        private final Map<InetSocketAddress, Boolean> pingResMap =
-                            new HashMap<>();
-
-                        @Override public boolean apply(InetSocketAddress addr) {
-                            Boolean res = pingResMap.get(addr);
-
-                            if (res == null) {
-                                try {
-                                    res = pingNode(addr, null).get1() != null;
-                                }
-                                catch (GridException e) {
-                                    if (log.isDebugEnabled())
-                                        log.debug("Failed to ping node [addr=" + addr +
-                                            ", err=" + e.getMessage() + ']');
-
-                                    res = false;
-                                }
-                                finally {
-                                    pingResMap.put(addr, res);
-                                }
-                            }
-
-                            return !res;
-                        }
-                    }
-                );
-
-                // Unregister dead-nodes addresses.
-                if (!rmvAddrs.isEmpty()) {
-                    ipFinder.unregisterAddresses(rmvAddrs);
-
-                    if (log.isDebugEnabled())
-                        log.debug("Unregistered addresses from IP finder: " + rmvAddrs);
-                }
-
-                // Addresses that were removed by mistake (e.g. on segmentation).
-                Collection<InetSocketAddress> missingAddrs = F.view(
-                    currAddrs,
-                    F.notContains(regAddrs)
-                );
-
-                // Re-register missing addresses.
-                if (!missingAddrs.isEmpty()) {
-                    ipFinder.registerAddresses(missingAddrs);
-
-                    if (log.isDebugEnabled())
-                        log.debug("Registered missing addresses in IP finder: " + missingAddrs);
-                }
-            }
-            catch (IgniteSpiException e) {
-                LT.error(log, e, "Failed to clean IP finder up.");
-            }
-        }
-    }
-
-    /**
-     * Pending messages container.
-     */
-    private static class PendingMessages {
-        /** */
-        private static final int MAX = 1024;
-
-        /** Pending messages. */
-        private final Queue<TcpDiscoveryAbstractMessage> msgs = new ArrayDeque<>(MAX * 2);
-
-        /** Discarded message ID. */
-        private IgniteUuid discardId;
-
-        /**
-         * Adds pending message and shrinks queue if it exceeds limit
-         * (messages that were not discarded yet are never removed).
-         *
-         * @param msg Message to add.
-         */
-        void add(TcpDiscoveryAbstractMessage msg) {
-            msgs.add(msg);
-
-            while (msgs.size() > MAX) {
-                TcpDiscoveryAbstractMessage polled = msgs.poll();
-
-                assert polled != null;
-
-                if (polled.id().equals(discardId))
-                    break;
-            }
-        }
-
-        /**
-         * Gets messages starting from provided ID (exclusive). If such
-         * message is not found, {@code null} is returned (this indicates
-         * a failure condition when it was already removed from queue).
-         *
-         * @param lastMsgId Last message ID.
-         * @return Collection of messages.
-         */
-        @Nullable Collection<TcpDiscoveryAbstractMessage> messages(IgniteUuid lastMsgId) {
-            assert lastMsgId != null;
-
-            Collection<TcpDiscoveryAbstractMessage> copy = new ArrayList<>(msgs.size());
-
-            boolean skip = true;
-
-            for (TcpDiscoveryAbstractMessage msg : msgs) {
-                if (skip) {
-                    if (msg.id().equals(lastMsgId))
-                        skip = false;
-                }
-                else
-                    copy.add(msg);
-            }
-
-            return !skip ? copy : null;
-        }
-
-        /**
-         * Resets pending messages.
-         *
-         * @param msgs Message.
-         * @param discardId Discarded message ID.
-         */
-        void reset(@Nullable Collection<TcpDiscoveryAbstractMessage> msgs, @Nullable IgniteUuid discardId) {
-            this.msgs.clear();
-
-            if (msgs != null)
-                this.msgs.addAll(msgs);
-
-            this.discardId = discardId;
-        }
-
-        /**
-         * Clears pending messages.
-         */
-        void clear() {
-            msgs.clear();
-
-            discardId = null;
-        }
-
-        /**
-         * Discards message with provided ID and all before it.
-         *
-         * @param id Discarded message ID.
-         */
-        void discard(IgniteUuid id) {
-            discardId = id;
-        }
-    }
-
-    /**
-     * Message worker thread for mess

<TRUNCATED>

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