title: Getting NullPointerException while connecting with ignite server node
body: <p>I have multiple Clients which are getting started as a embedded mode on a weblogic server and standalone server node is exists inside a docker container. Both the server and client nodes are on the same machine.</p>
  <p>below are the exceptions are printed on clients end.</p>
  <pre><code>Mar 30, 2021 11:53:25 AM org.apache.ignite.logger.java.JavaLogger error
  SEVERE: Exception in discovery notyfier worker thread.
  java.lang.NullPointerException
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager.addClientNode(GridDiscoveryManager.java:445)
      at org.apache.ignite.internal.processors.cache.ClusterCachesInfo.processCacheChangeRequests(ClusterCachesInfo.java:596)
      at org.apache.ignite.internal.processors.cache.ClusterCachesInfo.onCacheChangeRequested(ClusterCachesInfo.java:430)
      at org.apache.ignite.internal.processors.cache.GridCacheProcessor.onCustomEvent(GridCacheProcessor.java:3827)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:697)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.lambda$onDiscovery$0(GridDiscoveryManager.java:604)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body0(GridDiscoveryManager.java:2667)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body(GridDiscoveryManager.java:2705)
      at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
      at java.lang.Thread.run(Thread.java:748)
  
  
  and below are the exceptions printed on ignite server node
  
  [11:52:26,066][INFO][grid-nio-worker-tcp-comm-1-#25][TcpCommunicationSpi] Accepted incoming communication connection [locAddr=/127.0.0.1:47100, rmtAddr=/127.0.0.1:42966]
  [11:53:14,633][INFO][grid-timeout-worker-#23][IgniteKernal] 
  Metrics for local node (to disable set 'metricsLogFrequency' to 0)
      ^-- Node [id=b180492a, uptime=3 days, 19:10:25.322]
      ^-- H/N/C [hosts=1, nodes=7, CPUs=8]
      ^-- CPU [cur=0.13%, avg=0.1%, GC=0%]
      ^-- PageMemory [pages=98848]
      ^-- Heap [used=776MB, free=89.33%, comm=4576MB]
      ^-- Off-heap [used=388MB, free=96.82%, comm=1120MB]
      ^--   sysMemPlc region [used=0MB, free=99.21%, comm=40MB]
      ^--   default region [used=387MB, free=96.78%, comm=1040MB]
      ^--   TxLog region [used=0MB, free=100%, comm=40MB]
      ^-- Outbound messages queue [size=0]
      ^-- Public thread pool [active=0, idle=0, qSize=0]
      ^-- System thread pool [active=0, idle=7, qSize=0]
  [11:53:14,633][INFO][grid-timeout-worker-#23][IgniteKernal] FreeList [name=null, buckets=256, dataPages=1, reusePages=3]
  [11:53:25,830][SEVERE][disco-notifier-worker-#41][GridDiscoveryManager] Exception in discovery notyfier worker thread.
  java.lang.NullPointerException
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager.addClientNode(GridDiscoveryManager.java:445)
      at org.apache.ignite.internal.processors.cache.ClusterCachesInfo.processCacheChangeRequests(ClusterCachesInfo.java:596)
      at org.apache.ignite.internal.processors.cache.ClusterCachesInfo.onCacheChangeRequested(ClusterCachesInfo.java:430)
      at org.apache.ignite.internal.processors.cache.GridCacheProcessor.onCustomEvent(GridCacheProcessor.java:3827)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:697)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.lambda$onDiscovery$0(GridDiscoveryManager.java:604)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body0(GridDiscoveryManager.java:2667)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body(GridDiscoveryManager.java:2705)
      at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
      at java.lang.Thread.run(Thread.java:748)
  [11:53:25,831][SEVERE][disco-notifier-worker-#41][] Critical system error detected. Will be handled accordingly to configured handler [hnd=StopNodeOrHaltFailureHandler [tryStop=false, timeout=0, super=AbstractFailureHandler [ignoredFailureTypes=[SYSTEM_WORKER_BLOCKED, SYSTEM_CRITICAL_OPERATION_TIMEOUT]]], failureCtx=FailureContext [type=SYSTEM_WORKER_TERMINATION, err=java.lang.NullPointerException]]
  java.lang.NullPointerException
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager.addClientNode(GridDiscoveryManager.java:445)
      at org.apache.ignite.internal.processors.cache.ClusterCachesInfo.processCacheChangeRequests(ClusterCachesInfo.java:596)
      at org.apache.ignite.internal.processors.cache.ClusterCachesInfo.onCacheChangeRequested(ClusterCachesInfo.java:430)
      at org.apache.ignite.internal.processors.cache.GridCacheProcessor.onCustomEvent(GridCacheProcessor.java:3827)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:697)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.lambda$onDiscovery$0(GridDiscoveryManager.java:604)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body0(GridDiscoveryManager.java:2667)
      at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body(GridDiscoveryManager.java:2705)
      at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
      at java.lang.Thread.run(Thread.java:748)
  [11:53:25,833][WARNING][disco-notifier-worker-#41][FailureProcessor] No deadlocked threads detected.
  [11:53:26,086][WARNING][disco-notifier-worker-#41][FailureProcessor] Thread dump at 2021/03/30 11:53:26 GMT
  Thread [name=&quot;sys-#34166&quot;, id=34294, state=TIMED_WAITING, blockCnt=0, waitCnt=1]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@3e4db039, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
          at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
  
  Thread [name=&quot;sys-#34165&quot;, id=34293, state=TIMED_WAITING, blockCnt=0, waitCnt=1]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@3e4db039, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
          at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
  
  Thread [name=&quot;tcp-disco-client-message-worker-#107&quot;, id=34285, state=TIMED_WAITING, blockCnt=0, waitCnt=96]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@3f4c221b, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
          at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorker.body(ServerImpl.java:7183)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorkerThread.body(ServerImpl.java:7119)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-sock-reader-#106&quot;, id=34284, state=RUNNABLE, blockCnt=0, waitCnt=0]
          at java.net.SocketInputStream.socketRead0(Native Method)
          at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
          at java.net.SocketInputStream.read(SocketInputStream.java:171)
          at java.net.SocketInputStream.read(SocketInputStream.java:141)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
          at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
          - locked java.io.BufferedInputStream@6cd381b3
          at o.a.i.marshaller.jdk.JdkMarshallerInputStreamWrapper.read(JdkMarshallerInputStreamWrapper.java:53)
          at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2663)
          at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2679)
          at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
          at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
          at java.io.ObjectInputStream.&lt;init&gt;(ObjectInputStream.java:358)
          at o.a.i.marshaller.jdk.JdkMarshallerObjectInputStream.&lt;init&gt;(JdkMarshallerObjectInputStream.java:43)
          at o.a.i.marshaller.jdk.JdkMarshaller.unmarshal0(JdkMarshaller.java:137)
          at o.a.i.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:94)
          at o.a.i.i.util.IgniteUtils.unmarshal(IgniteUtils.java:10086)
          at o.a.i.spi.discovery.tcp.ServerImpl$SocketReader.body(ServerImpl.java:6246)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-sock-reader-#103&quot;, id=34263, state=RUNNABLE, blockCnt=2, waitCnt=2]
          at java.net.SocketInputStream.socketRead0(Native Method)
          at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
          at java.net.SocketInputStream.read(SocketInputStream.java:171)
          at java.net.SocketInputStream.read(SocketInputStream.java:141)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
          at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
          - locked java.io.BufferedInputStream@215dbeb0
          at o.a.i.marshaller.jdk.JdkMarshallerInputStreamWrapper.read(JdkMarshallerInputStreamWrapper.java:53)
          at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2663)
          at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2679)
          at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
          at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
          at java.io.ObjectInputStream.&lt;init&gt;(ObjectInputStream.java:358)
          at o.a.i.marshaller.jdk.JdkMarshallerObjectInputStream.&lt;init&gt;(JdkMarshallerObjectInputStream.java:43)
          at o.a.i.marshaller.jdk.JdkMarshaller.unmarshal0(JdkMarshaller.java:137)
          at o.a.i.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:94)
          at o.a.i.i.util.IgniteUtils.unmarshal(IgniteUtils.java:10086)
          at o.a.i.spi.discovery.tcp.ServerImpl$SocketReader.body(ServerImpl.java:6246)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-sock-reader-#102&quot;, id=34262, state=RUNNABLE, blockCnt=0, waitCnt=0]
          at java.net.SocketInputStream.socketRead0(Native Method)
          at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
          at java.net.SocketInputStream.read(SocketInputStream.java:171)
          at java.net.SocketInputStream.read(SocketInputStream.java:141)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
          at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
          - locked java.io.BufferedInputStream@51f37d31
          at o.a.i.marshaller.jdk.JdkMarshallerInputStreamWrapper.read(JdkMarshallerInputStreamWrapper.java:53)
          at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2663)
          at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2679)
          at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
          at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
          at java.io.ObjectInputStream.&lt;init&gt;(ObjectInputStream.java:358)
          at o.a.i.marshaller.jdk.JdkMarshallerObjectInputStream.&lt;init&gt;(JdkMarshallerObjectInputStream.java:43)
          at o.a.i.marshaller.jdk.JdkMarshaller.unmarshal0(JdkMarshaller.java:137)
          at o.a.i.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:94)
          at o.a.i.i.util.IgniteUtils.unmarshal(IgniteUtils.java:10086)
          at o.a.i.spi.discovery.tcp.ServerImpl$SocketReader.body(ServerImpl.java:6246)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-client-message-worker-#101&quot;, id=34249, state=TIMED_WAITING, blockCnt=0, waitCnt=384]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@76db00a4, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
          at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorker.body(ServerImpl.java:7183)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorkerThread.body(ServerImpl.java:7119)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-client-message-worker-#100&quot;, id=34248, state=TIMED_WAITING, blockCnt=0, waitCnt=386]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@713eab82, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
          at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorker.body(ServerImpl.java:7183)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorkerThread.body(ServerImpl.java:7119)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-sock-reader-#98&quot;, id=34246, state=RUNNABLE, blockCnt=0, waitCnt=0]
          at java.net.SocketInputStream.socketRead0(Native Method)
          at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
          at java.net.SocketInputStream.read(SocketInputStream.java:171)
          at java.net.SocketInputStream.read(SocketInputStream.java:141)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
          at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
          - locked java.io.BufferedInputStream@778acb44
          at o.a.i.marshaller.jdk.JdkMarshallerInputStreamWrapper.read(JdkMarshallerInputStreamWrapper.java:53)
          at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2663)
          at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2679)
          at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
          at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
          at java.io.ObjectInputStream.&lt;init&gt;(ObjectInputStream.java:358)
          at o.a.i.marshaller.jdk.JdkMarshallerObjectInputStream.&lt;init&gt;(JdkMarshallerObjectInputStream.java:43)
          at o.a.i.marshaller.jdk.JdkMarshaller.unmarshal0(JdkMarshaller.java:137)
          at o.a.i.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:94)
          at o.a.i.i.util.IgniteUtils.unmarshal(IgniteUtils.java:10086)
          at o.a.i.spi.discovery.tcp.ServerImpl$SocketReader.body(ServerImpl.java:6246)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;tcp-disco-client-message-worker-#97&quot;, id=34236, state=TIMED_WAITING, blockCnt=0, waitCnt=446]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@597a2b31, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
          at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorker.body(ServerImpl.java:7183)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorkerThread.body(ServerImpl.java:7119)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;srvc-deploy-#45&quot;, id=68, state=WAITING, blockCnt=1, waitCnt=162]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@31b3cad4, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
          at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
          at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
  
  Thread [name=&quot;exchange-worker-#43&quot;, id=66, state=TIMED_WAITING, blockCnt=2, waitCnt=65757]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@10c2f74d, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
          at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
          at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
          at o.a.i.i.processors.cache.GridCachePartitionExchangeManager$ExchangeWorker.body0(GridCachePartitionExchangeManager.java:2613)
          at o.a.i.i.processors.cache.GridCachePartitionExchangeManager$ExchangeWorker.body(GridCachePartitionExchangeManager.java:2540)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
          at java.lang.Thread.run(Thread.java:748)
  
  Thread [name=&quot;ignite-update-notifier-timer&quot;, id=65, state=TIMED_WAITING, blockCnt=2, waitCnt=5705]
      Lock [object=java.util.TaskQueue@18e965c7, ownerName=null, ownerId=-1]
          at java.lang.Object.wait(Native Method)
          at java.util.TimerThread.mainLoop(Timer.java:552)
          at java.util.TimerThread.run(Timer.java:505)
  
  Thread [name=&quot;upd-ver-checker&quot;, id=64, state=TIMED_WAITING, blockCnt=0, waitCnt=65592]
          at java.lang.Thread.sleep(Native Method)
          at o.a.i.i.processors.cluster.GridUpdateNotifier$1.run(GridUpdateNotifier.java:115)
          at java.lang.Thread.run(Thread.java:748)
  
  Thread [name=&quot;disco-event-worker-#42&quot;, id=63, state=WAITING, blockCnt=1, waitCnt=203191]
      Lock [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2286f22c, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
          at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
          at o.a.i.i.managers.discovery.GridDiscoveryManager$DiscoveryWorker.body0(GridDiscoveryManager.java:2856)
          at o.a.i.i.managers.discovery.GridDiscoveryManager$DiscoveryWorker.body(GridDiscoveryManager.java:2825)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
  
  Thread [name=&quot;tcp-disco-msg-worker-#2&quot;, id=61, state=RUNNABLE, blockCnt=3, waitCnt=32527715]
          at java.lang.String.intern(Native Method)
          at java.io.ObjectStreamField.&lt;init&gt;(ObjectStreamField.java:107)
          at java.io.ObjectStreamClass.readNonProxy(ObjectStreamClass.java:805)
          at java.io.ObjectInputStream.readClassDescriptor(ObjectInputStream.java:891)
          at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1857)
          at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751)
          at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
          at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
          at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
          at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
          at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
          at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
          at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
          at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
          at java.util.ArrayList.readObject(ArrayList.java:797)
          at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
          at java.lang.reflect.Method.invoke(Method.java:498)
          at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1170)
          at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2178)
          at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
          at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
          at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
          at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
          at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
          at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
          at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
          at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
          at o.a.i.marshaller.jdk.JdkMarshaller.unmarshal0(JdkMarshaller.java:139)
          at o.a.i.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:94)
          at o.a.i.marshaller.jdk.JdkMarshaller.unmarshal0(JdkMarshaller.java:161)
          at o.a.i.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:82)
          at o.a.i.i.util.IgniteUtils.unmarshal(IgniteUtils.java:10141)
          at o.a.i.spi.discovery.tcp.messages.TcpDiscoveryCustomEventMessage.message(TcpDiscoveryCustomEventMessage.java:81)
          at o.a.i.spi.discovery.tcp.ServerImpl$RingMessageWorker.processCustomMessage(ServerImpl.java:5478)
          at o.a.i.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2837)
          at o.a.i.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2611)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorker.body(ServerImpl.java:7188)
          at o.a.i.spi.discovery.tcp.ServerImpl$RingMessageWorker.body(ServerImpl.java:2700)
          at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:120)
          at o.a.i.spi.discovery.tcp.ServerImpl$MessageWorkerThread.body(ServerImpl.java:7119)
          at o.a.i.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
  
  Thread [name=&quot;main&quot;, id=1, state=WAITING, blockCnt=1, waitCnt=6]
      Lock [object=java.util.concurrent.CountDownLatch$Sync@20e2f504, ownerName=null, ownerId=-1]
          at sun.misc.Unsafe.park(Native Method)
          at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
          at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
          at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
          at o.a.i.startup.cmdline.CommandLineStartup.main(CommandLineStartup.java:334)
  [11:53:26,086][SEVERE][disco-notifier-worker-#41][] JVM will be halted immediately due to the failure: [failureCtx=FailureContext [type=SYSTEM_WORKER_TERMINATION, err=java.lang.NullPointerException]]
  
      
  </code></pre>