Problem
The Bamboo server log shows the following exception log traces for every build execution that uses a Tasks for AWS task:
2016-04-12 14:44:03,656 INFO [10-BAM::PlanExec:pool-17-thread-2] [ChainPluginSupportHelper] Old plugin interface detected: java.lang.AbstractMethodError: net.utoolity.atlassian.bamboo.taws.AWSRuntimeTaskDataProvider.createRuntimeTaskData(Lcom/atlassian/bamboo/task/runtime/RuntimeTaskDefinition;Lcom/atlassian/bamboo/v2/build/CommonContext;)Ljava/util/Map; at com.atlassian.bamboo.chains.ChainPluginSupportHelper.prepareRuntimeTaskData(ChainPluginSupportHelper.java:43) at com.atlassian.bamboo.chains.ChainPluginSupportImpl$10.run(ChainPluginSupportImpl.java:289) at com.atlassian.bamboo.variable.CustomVariableContextImpl.withVariableSubstitutor(CustomVariableContextImpl.java:206) at com.atlassian.bamboo.variable.CustomVariableContextRunnerImpl.execute(CustomVariableContextRunnerImpl.java:33) at com.atlassian.bamboo.chains.ChainPluginSupportImpl.buildStarted(ChainPluginSupportImpl.java:276) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.orm.hibernate3.HibernateInterceptor.invoke(HibernateInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy172.buildStarted(Unknown Source) at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.dispatchBuildsInCurrentStage(ChainExecutionManagerImpl.java:1049) at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.access$2000(ChainExecutionManagerImpl.java:123) at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$4.run(ChainExecutionManagerImpl.java:744) at io.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:302) at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.execute(ChainExecutionManagerImpl.java:693) at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.tryStartChainState(ChainExecutionManagerImpl.java:360) at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.delayedStart(ChainExecutionManagerImpl.java:228) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy134.delayedStart(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:201) at com.sun.proxy.$Proxy134.delayedStart(Unknown Source) at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$2.call(PlanExecutionManagerImpl.java:478) at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$2.call(PlanExecutionManagerImpl.java:449) at io.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:293) at com.atlassian.bamboo.plan.PlanExecutionLockServiceImpl.lock(PlanExecutionLockServiceImpl.java:85) at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.doWithProcessLock(PlanExecutionManagerImpl.java:786) at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.startUnconditionalBuild(PlanExecutionManagerImpl.java:448) at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.start(PlanExecutionManagerImpl.java:564) at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.start(PlanExecutionManagerImpl.java:585) at com.atlassian.bamboo.plan.DelegatingPlanExecutionManager.start(DelegatingPlanExecutionManager.java:95) at com.atlassian.bamboo.plan.NonBlockingPlanExecutionServiceImpl$2.call(NonBlockingPlanExecutionServiceImpl.java:95) at com.atlassian.bamboo.plan.NonBlockingPlanExecutionServiceImpl$2.call(NonBlockingPlanExecutionServiceImpl.java:88) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at com.atlassian.bamboo.utils.BambooRunnables$1.run(BambooRunnables.java:51) at com.atlassian.bamboo.security.ImpersonationHelper.runWith(ImpersonationHelper.java:31) at com.atlassian.bamboo.security.ImpersonationHelper.runWithSystemAuthority(ImpersonationHelper.java:20) at com.atlassian.bamboo.security.ImpersonationHelper$1.run(ImpersonationHelper.java:52) at java.lang.Thread.run(Thread.java:745)
Solution
Misleading log message
This INFO level exception does not imply any actual build execution error and can be safely ignored (it is aimed at app developers to inform them about an optional new interface implementation, but the inclusion of the full exception stack trace makes it appear like a serious error)!
This problem is caused by a misleading upstream code change introduced in Bamboo 5.10.0 and addressed in Bamboo 6.0.0:
BAM-17726 - Getting issue details... STATUS
Accordingly, you can address it by upgrading to Bamboo 6.0.0 or higher – meanwhile you can apply the workaround outlined below.
Workaround
The resulting log pollution can be prevented by configuring the level of logging on the Bamboo server to adjust the log level for the offending "com.atlassian.bamboo.chains.ChainPluginSupportHelper" class to WARN or ERROR (inspection of the classes source code shows no other INFO level log output being created there at the time of this writing).
Note that log level adjustments done via the runtime Bamboo log settings UI page will not be persisted and are valid during Bamboo runtime only, i.e. they will be lost on a server restart. To achieve a persistent adjustment, follow the part of the instructions regarding usage of the respective log4j.properties file(s).