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Posted to dev@stratos.apache.org by "Nirmal Fernando (JIRA)" <ji...@apache.org> on 2013/10/20 19:26:41 UTC
[jira] [Commented] (STRATOS-107) Implement Load Balancing Algorithm
Interface and Round Robin Implementation
[ https://issues.apache.org/jira/browse/STRATOS-107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800162#comment-13800162 ]
Nirmal Fernando commented on STRATOS-107:
-----------------------------------------
Imesh,
I'm getting an NPE with your latest fixes. Did you miss a commit?
[2013-10-20 22:52:48,559] ERROR - NativeWorkerPool Uncaught exception
java.lang.NullPointerException
at
org.apache.stratos.lb.endpoint.algorithm.RoundRobin.getNextMember(RoundRobin.java:47)
at
org.apache.stratos.lb.endpoint.RequestProcessor.findNextMember(RequestProcessor.java:67)
at
org.apache.stratos.lb.endpoint.endpoint.TenantAwareLoadBalanceEndpoint.findNextMember(TenantAwareLoadBalanceEndpoint.java:156)
at
org.apache.stratos.lb.endpoint.endpoint.TenantAwareLoadBalanceEndpoint.send(TenantAwareLoadBalanceEndpoint.java:107)
at
org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:95)
at
org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
at
org.apache.synapse.mediators.filters.InMediator.mediate(InMediator.java:55)
at
org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
at
org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
at
org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:199)
at
org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:83)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at
org.apache.axis2.transport.http.util.RESTUtil.invokeAxisEngine(RESTUtil.java:144)
at
org.apache.axis2.transport.http.util.RESTUtil.processURLRequest(RESTUtil.java:139)
at
org.apache.synapse.transport.nhttp.util.RESTUtil.processGetAndDeleteRequest(RESTUtil.java:146)
at
org.apache.synapse.transport.nhttp.DefaultHttpGetProcessor.processGetAndDelete(DefaultHttpGetProcessor.java:464)
at
org.wso2.carbon.transport.nhttp.api.NHttpGetProcessor.process(NHttpGetProcessor.java:296)
at
org.apache.synapse.transport.nhttp.ServerWorker.run(ServerWorker.java:272)
at
org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
--
Best Regards,
Nirmal
Nirmal Fernando.
PPMC Member & Committer of Apache Stratos,
Senior Software Engineer, WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/
> Implement Load Balancing Algorithm Interface and Round Robin Implementation
> ---------------------------------------------------------------------------
>
> Key: STRATOS-107
> URL: https://issues.apache.org/jira/browse/STRATOS-107
> Project: Stratos
> Issue Type: Sub-task
> Reporter: Imesh Gunaratne
> Assignee: Imesh Gunaratne
> Fix For: 4.0.0 M1
>
>
> The previous version of the Stratos Load Balancer used Apache Synapse/Axis2/Tribes clustering feature for communicating with its application members. As a result load balancing algorithm was implemented using Axis2. This algorithm interface is tightly coupled with Axis2 members.
> The idea of this task is to implement a generic algorithm interface which is not coupled with Axis2 so that load balancing specific features will be loosely coupled with its foundation components.
--
This message was sent by Atlassian JIRA
(v6.1#6144)
Re: [jira] [Commented] (STRATOS-107) Implement Load Balancing
Algorithm Interface and Round Robin Implementation
Posted by Nirmal Fernando <ni...@gmail.com>.
I'm fixing this temporarily by adding following bold line of code. Please
fix correctly.
RequestProcessor.java
......
*algorithm.setMembers(new ArrayList<Member>(cluster.getMembers()));*
return algorithm.getNextMember(algorithmContext);
On Sun, Oct 20, 2013 at 10:56 PM, Nirmal Fernando (JIRA) <ji...@apache.org>wrote:
>
> [
> https://issues.apache.org/jira/browse/STRATOS-107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800162#comment-13800162]
>
> Nirmal Fernando commented on STRATOS-107:
> -----------------------------------------
>
> Imesh,
>
> I'm getting an NPE with your latest fixes. Did you miss a commit?
>
> [2013-10-20 22:52:48,559] ERROR - NativeWorkerPool Uncaught exception
> java.lang.NullPointerException
> at
>
> org.apache.stratos.lb.endpoint.algorithm.RoundRobin.getNextMember(RoundRobin.java:47)
> at
>
> org.apache.stratos.lb.endpoint.RequestProcessor.findNextMember(RequestProcessor.java:67)
> at
>
> org.apache.stratos.lb.endpoint.endpoint.TenantAwareLoadBalanceEndpoint.findNextMember(TenantAwareLoadBalanceEndpoint.java:156)
> at
>
> org.apache.stratos.lb.endpoint.endpoint.TenantAwareLoadBalanceEndpoint.send(TenantAwareLoadBalanceEndpoint.java:107)
> at
>
> org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:95)
> at
>
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
> at
> org.apache.synapse.mediators.filters.InMediator.mediate(InMediator.java:55)
> at
>
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
> at
>
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> at
>
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:199)
> at
>
> org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:83)
> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
> at
>
> org.apache.axis2.transport.http.util.RESTUtil.invokeAxisEngine(RESTUtil.java:144)
> at
>
> org.apache.axis2.transport.http.util.RESTUtil.processURLRequest(RESTUtil.java:139)
> at
>
> org.apache.synapse.transport.nhttp.util.RESTUtil.processGetAndDeleteRequest(RESTUtil.java:146)
> at
>
> org.apache.synapse.transport.nhttp.DefaultHttpGetProcessor.processGetAndDelete(DefaultHttpGetProcessor.java:464)
> at
>
> org.wso2.carbon.transport.nhttp.api.NHttpGetProcessor.process(NHttpGetProcessor.java:296)
> at
> org.apache.synapse.transport.nhttp.ServerWorker.run(ServerWorker.java:272)
> at
>
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
>
>
>
>
>
>
> --
> Best Regards,
> Nirmal
>
> Nirmal Fernando.
> PPMC Member & Committer of Apache Stratos,
> Senior Software Engineer, WSO2 Inc.
>
> Blog: http://nirmalfdo.blogspot.com/
>
>
> > Implement Load Balancing Algorithm Interface and Round Robin
> Implementation
> >
> ---------------------------------------------------------------------------
> >
> > Key: STRATOS-107
> > URL: https://issues.apache.org/jira/browse/STRATOS-107
> > Project: Stratos
> > Issue Type: Sub-task
> > Reporter: Imesh Gunaratne
> > Assignee: Imesh Gunaratne
> > Fix For: 4.0.0 M1
> >
> >
> > The previous version of the Stratos Load Balancer used Apache
> Synapse/Axis2/Tribes clustering feature for communicating with its
> application members. As a result load balancing algorithm was implemented
> using Axis2. This algorithm interface is tightly coupled with Axis2 members.
> > The idea of this task is to implement a generic algorithm interface
> which is not coupled with Axis2 so that load balancing specific features
> will be loosely coupled with its foundation components.
>
>
>
> --
> This message was sent by Atlassian JIRA
> (v6.1#6144)
>
--
Best Regards,
Nirmal
Nirmal Fernando.
PPMC Member & Committer of Apache Stratos,
Senior Software Engineer, WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/