org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: ConnectionManager queue
   at com.jcraft.jsch.KnownHosts.getHMACSHA1(KnownHosts.java:486)
   at com.jcraft.jsch.KnownHosts.access$000(KnownHosts.java:35)
   at com.jcraft.jsch.KnownHosts$HashedHostKey.isMatched(KnownHosts.java:540)
   at com.jcraft.jsch.KnownHosts.getHostKey(KnownHosts.java:361)
   at com.jcraft.jsch.Session.checkHost(Session.java:809)
   at com.jcraft.jsch.Session.connect(Session.java:342)
   at org.netbeans.modules.nativeexecution.jsch.JSchChannelsSupport.startNewSession(JSchChannelsSupport.java:254)
   at org.netbeans.modules.nativeexecution.jsch.JSchChannelsSupport.connect(JSchChannelsSupport.java:209)
   at org.netbeans.modules.nativeexecution.jsch.JSchConnectionTask.connect(JSchConnectionTask.java:134)
   at org.netbeans.modules.nativeexecution.jsch.JSchConnectionTask.access$000(JSchConnectionTask.java:66)
   at org.netbeans.modules.nativeexecution.jsch.JSchConnectionTask$1.call(JSchConnectionTask.java:92)
   at org.netbeans.modules.nativeexecution.jsch.JSchConnectionTask$1.call(JSchConnectionTask.java:88)
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: SFTP: : Uploading /home/kiss/netbeans-8.1/cnd/bin/Linux-x86_64/rfs_controller to ikiss@10.40.30.153:/var/tmp/dlight_ikiss/6b88f630/tools/Linux-x86_64/rfs_controller
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: A deadlock was detected.
We suggest to restart the IDE to recover.
   at com.jcraft.jsch.KnownHosts.check(KnownHosts.java:263)
   at com.jcraft.jsch.Session.checkHost(Session.java:732)
   at com.jcraft.jsch.Session.connect(Session.java:342)
   at org.netbeans.modules.nativeexecution.jsch.JSchChannelsSupport.startNewSession(JSchChannelsSupport.java:254)
   at org.netbeans.modules.nativeexecution.jsch.JSchChannelsSupport.acquireChannel(JSchChannelsSupport.java:146)
   at org.netbeans.modules.nativeexecution.api.util.ConnectionManager$ConnectionManagerAccessorImpl.openAndAcquireChannel(ConnectionManager.java:645)
   at org.netbeans.modules.nativeexecution.JschSupport$1.call(JschSupport.java:86)
   at org.netbeans.modules.nativeexecution.JschSupport$1.call(JschSupport.java:82)
   at org.netbeans.modules.nativeexecution.JschSupport.start(JschSupport.java:143)
   at org.netbeans.modules.nativeexecution.JschSupport.startCommand(JschSupport.java:107)
   at org.netbeans.modules.nativeexecution.NbRemoteNativeProcess.createProcessImpl(NbRemoteNativeProcess.java:71)
   at org.netbeans.modules.nativeexecution.NbNativeProcess.create(NbNativeProcess.java:90)
   at org.netbeans.modules.nativeexecution.AbstractNativeProcess.createAndStart(AbstractNativeProcess.java:154)
   at org.netbeans.modules.nativeexecution.api.NativeProcessBuilder.call(NativeProcessBuilder.java:272)
   at org.netbeans.modules.nativeexecution.api.util.ProcessUtils.execute(ProcessUtils.java:391)
   at org.netbeans.modules.nativeexecution.api.util.ProcessUtils.execute(ProcessUtils.java:336)
   at org.netbeans.modules.nativeexecution.api.util.Md5checker.check(Md5checker.java:119)
   at org.netbeans.modules.nativeexecution.api.util.SftpSupport$Uploader.work(SftpSupport.java:297)
   at org.netbeans.modules.nativeexecution.api.util.SftpSupport$Uploader.call(SftpSupport.java:243)
   at org.netbeans.modules.nativeexecution.api.util.SftpSupport$Uploader.call(SftpSupport.java:228)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)