[STRATOS-210] Error while starting Autoscaler with the default policy: economyPolicy

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 4.0.0 M2
• Fix Version/s: 4.0.0 M5
• Component/s: Autoscaler

Environment

The following error is not reproducible consistently. But i got this error several times when i start Autoscaler. Due to this error, Auto scaler is not usable after that..

2013-11-14 06:02:19,565] ERROR {org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator} - Rule evaluate error
org.drools.RuntimeDroolsException: $clusterContext.getPartitionCount($partition.getId()) < $partition.getPartitionMembersMin() : [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:119)
    at org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:176)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:116)
    at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154)
    at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
    at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235)
    at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847)
    at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269)
    at org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator.evaluate(AutoscalerRuleEvaluator.java:81)
    at org.apache.stratos.autoscaler.rule.ExecutorTaskScheduler$1.run(ExecutorTaskScheduler.java:60)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
Caused by: [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:416)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:143)
    at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159)
    at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115)
    at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:108)
    at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
    at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
    at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
    at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:113)
    at org.mvel2.MVEL.executeExpression(MVEL.java:930)
    at org.drools.base.mvel.MVELEvalExpression.evaluate(MVELEvalExpression.java:101)
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
    ... 37 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1104)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:987)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:377)
    ... 48 more
Caused by: java.lang.NullPointerException
    at org.apache.stratos.autoscaler.ClusterContext.getPartitionCount(ClusterContext.java:157)
    ... 55 more
[2013-11-14 06:02:34,570] ERROR {org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator} - Rule evaluate error
org.drools.RuntimeDroolsException: $clusterContext.getPartitionCount($partition.getId()) < $partition.getPartitionMembersMin() : [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:119)
    at org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:176)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:116)
    at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154)
    at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
    at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235)
    at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847)
    at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269)
    at org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator.evaluate(AutoscalerRuleEvaluator.java:81)
    at org.apache.stratos.autoscaler.rule.ExecutorTaskScheduler$1.run(ExecutorTaskScheduler.java:60)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
Caused by: [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:416)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:143)
    at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159)
    at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115)
    at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:108)
    at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
    at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
    at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
    at org.mvel2.MVEL.executeExpression(MVEL.java:930)
    at org.drools.base.mvel.MVELEvalExpression.evaluate(MVELEvalExpression.java:101)
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
    ... 37 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1104)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:987)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:377)
    ... 47 more
Caused by: java.lang.NullPointerException
    at org.apache.stratos.autoscaler.ClusterContext.getPartitionCount(ClusterContext.java:157)
    ... 54 more
[2013-11-14 06:02:49,575] ERROR {org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator} - Rule evaluate error
org.drools.RuntimeDroolsException: $clusterContext.getPartitionCount($partition.getId()) < $partition.getPartitionMembersMin() : [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:119)
    at org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:176)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:116)
    at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154)
    at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
    at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235)
    at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847)
    at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269)
    at org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator.evaluate(AutoscalerRuleEvaluator.java:81)
    at org.apache.stratos.autoscaler.rule.ExecutorTaskScheduler$1.run(ExecutorTaskScheduler.java:60)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
Caused by: [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:416)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:143)
    at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159)
    at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115)
    at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:108)
    at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
    at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
    at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
    at org.mvel2.MVEL.executeExpression(MVEL.java:930)
    at org.drools.base.mvel.MVELEvalExpression.evaluate(MVELEvalExpression.java:101)
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
    ... 37 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1104)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:987)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:377)
    ... 47 more
Caused by: java.lang.NullPointerException
    at org.apache.stratos.autoscaler.ClusterContext.getPartitionCount(ClusterContext.java:157)
    ... 54 more
[2013-11-14 06:03:04,578] ERROR {org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator} - Rule evaluate error
org.drools.RuntimeDroolsException: $clusterContext.getPartitionCount($partition.getId()) < $partition.getPartitionMembersMin() : [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:119)
    at org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:176)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196)
    at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71)
    at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:333)
    at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:164)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232)
    at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:116)
    at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154)
    at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
    at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235)
    at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350)
    at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903)
    at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847)
    at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269)
    at org.apache.stratos.autoscaler.rule.AutoscalerRuleEvaluator.evaluate(AutoscalerRuleEvaluator.java:81)
    at org.apache.stratos.autoscaler.rule.ExecutorTaskScheduler$1.run(ExecutorTaskScheduler.java:60)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
Caused by: [Error: $clusterContext.getPartitionCount($partition.getId()): null]
[Near : {... $clusterContext.getPartitionCo ....}]
             ^
[Line: 1, Column: 1]
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:416)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:143)
    at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159)
    at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115)
    at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:108)
    at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
    at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
    at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
    at org.mvel2.MVEL.executeExpression(MVEL.java:930)
    at org.drools.base.mvel.MVELEvalExpression.evaluate(MVELEvalExpression.java:101)
    at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
    ... 37 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1104)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:987)
    at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:377)
    ... 47 more
Caused by: java.lang.NullPointerException
    at org.apache.stratos.autoscaler.ClusterContext.getPartitionCount(ClusterContext.java:157)
    ... 54 more

• Assignee: Nirmal Fernando
• Reporter: Reka
• Created: 19/Nov/13 22:06
• Updated: 16/Dec/13 04:41
• Resolved: 16/Dec/13 04:31