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EJBCLIENT000024: No EJB receiver available for handling
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created by <a href="https://community.jboss.org/people/Michael_Gronau">Michael Gronau</a> in <i>JBoss AS 7 Development</i> - <a href="https://community.jboss.org/message/753527#753527">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p>During some stress-testing our application, i get this exception, when we create multiple EJBClientContext Objects in different threads simultaniously (only in some of those threads):</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>java.lang.IllegalStateException : EJBCLIENT000024: No EJB receiver available for handling [appName:jas-application, moduleName:core-ejb, distinctName:] combination</p><p>    at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:522)</p><p>    at org.jboss.ejb.client.EJBClient.createSession(EJBClient.java:161)</p><p>    at org.jboss.ejb.client.naming.ejb.EjbNamingContext.doCreateProxy(EjbNamingContext.java:135)</p><p>    at org.jboss.ejb.client.naming.ejb.EjbNamingContext.createEjbProxy(EjbNamingContext.java:113)</p><p>    ... 9 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In our case this exception occurs in at least 1 Thread when connecting and looking up a stateful bean with more than 10 Threads at the same time.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Some debugging around this has shown that this exception is thrown because of a hard-coded timeout value in the class org.jboss.ejb.client.remoting.RemotingConnectionEJBReceiver.associate(). The code line has a TODO:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";">    </td><td style=";">boolean successfulHandshake = false;</td></tr><tr><td style=";">    </td><td style=";">try {</td></tr><tr><td style=";">        </td><td style=";">// wait for the handshake to complete</td></tr><tr><td style=";">        </td><td style=";"><span style="color: #ff0000;"><strong>// TODO: Think about externalizing this timeout</strong></span></td></tr><tr><td style=";">        </td><td style=";"><span style="color: #ff0000;"><strong>successfulHandshake = versionHandshakeLatch.await(5, TimeUnit.SECONDS);</strong></span></td></tr><tr><td style=";">        </td><td style=";">if (successfulHandshake) {</td></tr><tr><td style=";">            </td><td style=";">final Channel compatibleChannel = versionReceiver.getCompatibleChannel();</td></tr><tr><td style=";">            </td><td style=";">final ChannelAssociation channelAssociation = new ChannelAssociation(this, context, compatibleChannel, this.clientProtocolVersion, this.marshallerFactory, this.reconnectHandler);</td></tr><tr><td style=";">            </td><td style=";">synchronized (this.channelAssociations) {</td></tr><tr><td style=";">                </td><td style=";">this.channelAssociations.put(context, channelAssociation);</td></tr><tr><td style=";">            </td><td style=";">}</td></tr><tr><td style=";">            </td><td style=";">Logs.REMOTING.successfulVersionHandshake(context, compatibleChannel);</td></tr><tr><td style=";">        </td><td style=";">} else {</td></tr><tr><td style=";">            </td><td style=";">// no version handshake done. close the context</td></tr><tr><td style=";">            </td><td style=";">Logs.REMOTING.versionHandshakeNotCompleted(context);</td></tr><tr><td style=";">            </td><td style=";">context.close();</td></tr><tr><td style=";">        </td><td style=";">}</td></tr><tr><td style=";">    </td><td style=";">} catch (InterruptedException e) {</td></tr><tr><td style=";">        </td><td style=";">context.close();</td></tr><tr><td style=";">    </td><td style=";">}</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When stressing the remote ejb client enough the client EJBClientContext is closed silently (because version handshake was not done within 5 seconds) and so no ejb receivers are available.</p><p>I think, to make the timeout configurable would be a perfect solution for us.</p><p>Should I create an Issue in JIRA?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>With best regards,</p><p>Michael</p></div>
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