Fixed ZookeeperDiscoveryImpl to use j.u.c.ConcurrentHashMap
@@ -33,6 +33,7 @@ import java.util.Set;
import java.util.TreeMap;
import java.util.UUID;
import java.util.concurrent.Callable;
+import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
@@ -89,7 +90,6 @@ import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.data.Stat;
-import org.jboss.netty.util.internal.ConcurrentHashMap;
import org.jetbrains.annotations.Nullable;
import static org.apache.ignite.events.EventType.EVT_CLIENT_NODE_DISCONNECTED;
