[ https://issues.jboss.org/browse/ISPN-6926?page=com.atlassian.jira.plugin.... ] Gustavo Fernandes commented on ISPN-6926: ----------------------------------------- Interestingly, the MSC service threads from Wildfly are in state RUNNABLE but clearly hung: The Websocket server: {noformat} "MSC service thread 1-4" #15 prio=5 os_prio=0 tid=0x00007fbe48001000 nid=0x7ae0 in Object.wait() [0x00007fbe56f7d000] java.lang.Thread.State: RUNNABLE at io.netty.util.internal.SystemPropertyUtil.<clinit>(SystemPropertyUtil.java:38) at io.netty.channel.epoll.Native.<clinit>(Native.java:56) ... at org.infinispan.server.websocket.WebSocketServer.startInternal(WebSocketServer.java:57) at org.infinispan.server.websocket.WebSocketServer.startInternal(WebSocketServer.java:36) {noformat} The rest server: {noformat} "MSC service thread 1-1" #14 prio=5 os_prio=0 tid=0x00007f73846d8000 nid=0x158 in Object.wait() [0x00007f73548e5000] java.lang.Thread.State: RUNNABLE at io.netty.util.internal.ThreadLocalRandom.<clinit>(ThreadLocalRandom.java:67) ... at org.infinispan.server.endpoint.subsystem.RestService.start(RestService.java:101) {noformat} Memcached server: {noformat} "MSC service thread 1-2" #15 prio=5 os_prio=0 tid=0x00007f731c001000 nid=0x159 in Object.wait() [0x00007f73547e3000] java.lang.Thread.State: RUNNABLE at io.netty.util.internal.SystemPropertyUtil.<clinit>(SystemPropertyUtil.java:38) ... at org.infinispan.server.memcached.MemcachedServer.startInternal(MemcachedServer.scala:22) {noformat} HotRod server: {noformat} "MSC service thread 1-3" #16 prio=5 os_prio=0 tid=0x00007f73846da000 nid=0x15b in Object.wait() [0x00007f73545e3000] java.lang.Thread.State: RUNNABLE at org.infinispan.server.core.AbstractProtocolServer.startTransport(AbstractProtocolServer.java:70) ... at org.infinispan.server.hotrod.HotRodServer.startInternal(HotRodServer.scala:112) {noformat} The fact that the Threads are in RUNNABLE state but hung could indicate a deadlock in a static class initialization (https://bugs.openjdk.java.net/browse/JDK-8037567) -- This message was sent by Atlassian JIRA (v6.4.11#64026)