[jboss-jira] [JBoss JIRA] (WFLY-6199) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException

XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException --------------------------------------------------------------------------------------- Key: WFLY-6199 URL: https://issues.jboss.org/browse/WFLY-6199 Project: WildFly Issue Type: Bug Components: JMS Reporter: Jeff Mesnil Assignee: Jeff Mesnil We hit NPE during failback in HA scenario with replicated journal in dedicated HA topology. Http connectors are used. Test scenario: Start 1st EAP 7 server with Artemis configured as live Start 2nd EAP 7 server with Artemis configured as backup Send 2000 messages to in InQueue to live Start 3rd EAP 7 server with RA configured to connecto to live and deploy MDB which receives messages from InQueue and sends a new message to OutQueue When MDB is processing messages then kill live server -> MDB failovers to backup After MDB processed all messages receive all messages from OutQueue NPE occurs when live is killed on backup server: {code} 02:48:36,503 ERROR [org.xnio.listener] (default I/O-2) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException at org.wildfly.extension.messaging.activemq.HTTPUpgradeService$2.handleEvent(HTTPUpgradeService.java:154) at org.wildfly.extension.messaging.activemq.HTTPUpgradeService$2.handleEvent(HTTPUpgradeService.java:146) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at io.undertow.server.handlers.ChannelUpgradeHandler$1.handleUpgrade(ChannelUpgradeHandler.java:149) at io.undertow.server.protocol.http.HttpReadListener.exchangeComplete(HttpReadListener.java:362) at io.undertow.server.protocol.http.HttpServerConnection.exchangeComplete(HttpServerConnection.java:228) at io.undertow.server.HttpServerExchange.invokeExchangeCompleteListeners(HttpServerExchange.java:1226) at io.undertow.server.HttpServerExchange.terminateResponse(HttpServerExchange.java:1503) at io.undertow.server.Connectors.terminateResponse(Connectors.java:99) at io.undertow.server.protocol.http.HttpTransferEncoding$3.handleEvent(HttpTransferEncoding.java:197) at io.undertow.server.protocol.http.HttpTransferEncoding$3.handleEvent(HttpTransferEncoding.java:195) at io.undertow.conduits.HeadStreamSinkConduit.exitFlush(HeadStreamSinkConduit.java:178) at io.undertow.conduits.HeadStreamSinkConduit.flush(HeadStreamSinkConduit.java:122) at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162) [xnio-api-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:119) at io.undertow.server.HttpServerExchange.closeAndFlushResponse(HttpServerExchange.java:1652) at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1630) at io.undertow.server.handlers.ChannelUpgradeHandler.handleRequest(ChannelUpgradeHandler.java:152) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202) at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:233) at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:131) at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:145) at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:92) at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:51) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291) [xnio-api-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286) [xnio-api-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at org.xnio.nio.QueuedNioTcpServer$1.run(QueuedNioTcpServer.java:121) [xnio-nio-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:580) [xnio-nio-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] at org.xnio.nio.WorkerThread.run(WorkerThread.java:464) [xnio-nio-3.3.4.Final-redhat-1.jar:3.3.4.Final-redhat-1] {code}