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https://issues.apache.org/jira/browse/AXIS2-5775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16444009#comment-16444009
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Thorsten Schöning commented on AXIS2-5775:
------------------------------------------
I think I've encountered the same problem today in version 1.6.2. Because that
is very old, I plan to upgrade anyway and are unable to reproduce it currently,
I don't think it's worth it to spent time looking into this more detailed.
Nevertheless, I would like to document the problem here as well, just in case I
need to have a further look in future.
{CODE}
2018-04-19 11:48:33,874 ERROR de.am_soft.util.backend.client.ClBase.callImpl:
Exception occurred during method invocation.
java.lang.NullPointerException: null
at
org.apache.axis2.context.AbstractContext.needPropertyDifferences(AbstractContext.java:239)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.context.AbstractContext.setProperty(AbstractContext.java:202)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:270)
~[axis2-transport-http-1.6.2.jar:na]
at
org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:194)
~[axis2-transport-http-1.6.2.jar:na]
at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:75)
~[axis2-transport-http-1.6.2.jar:na]
at
org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:404)
~[axis2-transport-http-1.6.2.jar:na]
at
org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:231)
~[axis2-transport-http-1.6.2.jar:na]
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:406)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.client.ServiceClient.sendRobust(ServiceClient.java:475)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.client.ServiceClient.sendRobust(ServiceClient.java:456)
~[axis2-kernel-1.6.2.jar:1.6.2]
at
org.apache.axis2.rpc.client.RPCServiceClient.invokeRobust(RPCServiceClient.java:158)
~[axis2-adb-1.6.2.jar:1.6.2]
at
de.am_soft.util.backend.client.soap_dispatcher.ClSdImpl.dispatchImpl(ClSdImpl.java:437)
~[lib/:na]
at
de.am_soft.util.backend.client.soap_dispatcher.ClSdImpl.dispatch(ClSdImpl.java:488)
~[lib/:na]
at de.am_soft.util.backend.client.ClBase.callImpl(ClBase.java:92)
[lib/:na]
at de.am_soft.util.backend.client.ClBase.callImpl(ClBase.java:115)
[lib/:na]
at de.am_soft.sm_mtg.comm.backend.BkPackets.process(BkPackets.java:36)
[lib/:na]
at de.am_soft.sm_mtg.d.processor.Worker.processIncoming(Worker.java:90)
[lib/:na]
at de.am_soft.sm_mtg.d.processor.Processor$1.call(Processor.java:220)
[lib/:na]
at de.am_soft.sm_mtg.d.processor.Processor$1.call(Processor.java:1)
[lib/:na]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[na:1.8.0_161]
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
[na:1.8.0_161]
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
[na:1.8.0_161]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[na:1.8.0_161]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[na:1.8.0_161]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_161]
{CODE}
The NPE happens at the following line:
{CODE}
ClusteringAgent clusteringAgent =
cc.getAxisConfiguration().getClusteringAgent();
{CODE}
http://grepcode.com/file/repo1.maven.org/maven2/org.apache.axis2/axis2-kernel/1.6.2/org/apache/axis2/context/AbstractContext.java/#239
The NPE seems to happen while preparing a new SOAP request and I'm pretty sure
to not share clients:
{CODE}
RPCServiceClient serviceClient = new RPCServiceClient();
QName qname = new QName(this.uri, method);
Object[] response = null;
serviceClient.setOptions(this.getDefaultOptions(method));
this.initHttpConnectionManager(serviceClient.getServiceContext().getConfigurationContext());
if ((returnTypes == null) || (returnTypes.length == 0) ||
(returnTypes[0] == null))
{
437 serviceClient.invokeRobust(qname, args);
}
else
{
response = serviceClient.invokeBlocking(qname, args,
returnTypes);
}
response = this.createNativeResponse(response);
{CODE}
at
de.am_soft.util.backend.client.soap_dispatcher.ClSdImpl.dispatchImpl(ClSdImpl.java:437)
~[lib/:na]
{CODE}
private Options getDefaultOptions(String action)
{
Options retVal = new Options();
retVal.setAction(action);
retVal.setTo(new EndpointReference(this.epr));
retVal.setCallTransportCleanup(true);
retVal.setTimeOutInMilliSeconds(0);
return retVal;
}
private void initHttpConnectionManager(ConfigurationContext cfgCtx)
{
MultiThreadedHttpConnectionManager connMgr =
(MultiThreadedHttpConnectionManager)
cfgCtx.getProperty(HTTPConstants.MULTITHREAD_HTTP_CONNECTION_MANAGER);
if (connMgr == null)
{
connMgr = new MultiThreadedHttpConnectionManager();
cfgCtx.setProperty(HTTPConstants.MULTITHREAD_HTTP_CONNECTION_MANAGER, connMgr);
}
HttpConnectionManagerParams connMgrParams = connMgr.getParams();
connMgrParams.setMaxConnectionsPerHost(HostConfiguration.ANY_HOST_CONFIGURATION,
100);
connMgrParams.setMaxTotalConnections(100);
}
{CODE}
> upgrading from axis2 1.4 to 1.6.4
> ---------------------------------
>
> Key: AXIS2-5775
> URL: https://issues.apache.org/jira/browse/AXIS2-5775
> Project: Axis2
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.6.4
> Reporter: Rajesh
> Priority: Major
>
> Hi All,
> This is related to existing JIRA AXIS2-5774.
> We are upgrading from axis2 1.4 to 1.6.4. We upgraded successfully and got
> response from provider with execute() method.
> After 4 to 8 request , the service is throwing below error intemittently.
> (Modified now)
> Error:
> =======================
> at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:423)
> at
> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:406)
> at
> org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
> at
> org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
> =========================
> So we added few logging to Kernel 1.6.4 and found that after few request
> Cleanup() method in the serviceclient is cleaning the AxisConfiguration,hence
> the following request getting failed with Null error.
> Also we see changes in AxisCOnfiguration in 1.4 and 1.6.4 in Cleanup method().
> Is this the normal behaviour in axis2 1.6.4?
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