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https://issues.apache.org/jira/browse/FELIX-4642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137755#comment-14137755
]
Thomas Watson commented on FELIX-4642:
--------------------------------------
It seems to me the check should be reversed:
if (existingPermCands != null &&
!existingPermCands.get(0).equals(candidates.get(0)))
> NPE in the resolver when substituting
> -------------------------------------
>
> Key: FELIX-4642
> URL: https://issues.apache.org/jira/browse/FELIX-4642
> Project: Felix
> Issue Type: Bug
> Components: Resolver
> Affects Versions: resolver-1.2.0
> Reporter: Guillaume Nodet
> Fix For: resolver-1.2.0
>
>
> {code}
> 2014-09-17 11:01:13,035 | ERROR | agent-5-thread-1 | DeploymentAgent
> | ? ? | 76 -
> io.fabric8.fabric-agent - 1.2.0.SNAPSHOT | Unable to update agent
> java.lang.NullPointerException
> at
> org.apache.felix.resolver.ResolverImpl.permutateIfNeeded(ResolverImpl.java:1523)[76:io.fabric8.fabric-agent:1.2.0.SNAPSHOT]
> at
> org.apache.felix.resolver.Candidates.checkSubstitutes(Candidates.java:447)[76:io.fabric8.fabric-agent:1.2.0.SNAPSHOT]
> at
> org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:225)[76:io.fabric8.fabric-agent:1.2.0.SNAPSHOT]
> at
> io.fabric8.agent.DeploymentBuilder.resolve(DeploymentBuilder.java:243)[76:io.fabric8.fabric-agent:1.2.0.SNAPSHOT]
> at
> io.fabric8.agent.DeploymentAgent.doUpdate(DeploymentAgent.java:588)[76:io.fabric8.fabric-agent:1.2.0.SNAPSHOT]
> at
> io.fabric8.agent.DeploymentAgent$2.run(DeploymentAgent.java:313)[76:io.fabric8.fabric-agent:1.2.0.SNAPSHOT]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)[:1.7.0_51]
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_51]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_51]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_51]
> at java.lang.Thread.run(Thread.java:744)[:1.7.0_51]
> {code}
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