ERROR in karaf log

Distribution test shows this ERROR very often:

2016-02-14 11:58:12,391 | ERROR | config-pusher | PacketHandler_HWM | 512 - org.opendaylight.usecplugin.imp
l - 1.0.0.Beryllium | failed:HWM
java.lang.IllegalStateException: Optional.get() cannot be called on an absent value
at com.google.common.base.Absent.get(Absent.java:47)
at org.opendaylight.usecplugin.impl.PacketHandler_HWM.getHWMSample(PacketHandler_HWM.java:82)
at org.opendaylight.usecplugin.impl.UsecpluginProvider.onSessionInitiated(UsecpluginProvider.java:52)
at org.opendaylight.controller.md.sal.binding.util.BindingContextUtils.createProviderContextAndInitialize(BindingCont
extUtils.java:56)
at org.opendaylight.controller.sal.binding.impl.RootBindingAwareBroker.registerProvider(RootBindingAwareBroker.java:1
87)
at org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.usecplugin.impl.rev141210.UsecpluginModule.create
Instance(UsecpluginModule.java:29)
at org.opendaylight.controller.config.spi.AbstractModule.getInstance(AbstractModule.java:82)
at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_79]
at org.opendaylight.controller.config.manager.impl.dependencyresolver.DependencyResolverManager$ModuleInvocationHandl
er.handleInvocation(DependencyResolverManager.java:149)
at com.google.common.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:87)
at com.sun.proxy.$Proxy70.getInstance(Unknown Source)
at org.opendaylight.controller.config.manager.impl.ConfigTransactionControllerImpl.secondPhaseCommit(ConfigTransactio
nControllerImpl.java:421)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.secondPhaseCommit(ConfigRegistryImpl.java:287)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.commitConfig(ConfigRegistryImpl.java:227)
at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_79]
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75)[:1.7.0_79]
at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_79]
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279)[:1.7.0_79]
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:193)[:1.7.0_79]
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:175)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:117)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:54)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)[:1.7.0_79]
at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252)[:1.7.0_79]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)[:1.7.0_79]
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanProxy$InvokeHandler.invoke(MXBeanProxy.java:150)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanProxy.invoke(MXBeanProxy.java:167)[:1.7.0_79]
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:252)[:1.7.0_79]
at com.sun.proxy.$Proxy22.commitConfig(Unknown Source)[105:org.opendaylight.controller.config-api:0.4.0.Beryllium]
at org.opendaylight.controller.config.util.ConfigRegistryJMXClient.commitConfig(ConfigRegistryJMXClient.java:110)[109
:org.opendaylight.controller.config-util:0.4.0.Beryllium]
at org.opendaylight.controller.config.facade.xml.transactions.TransactionProvider.commitTransaction(TransactionProvid
er.java:142)[115:org.opendaylight.controller.config-manager-facade-xml:0.4.0.Beryllium]
at org.opendaylight.controller.config.facade.xml.ConfigSubsystemFacade.commitSilentTransaction(ConfigSubsystemFacade.
java:138)[115:org.opendaylight.controller.config-manager-facade-xml:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.pushConfig(ConfigPusherImpl.java:312)[117:org.ope
ndaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.pushConfigWithConflictingVersionRetries(ConfigPus
herImpl.java:164)[117:org.opendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.internalPushConfigs(ConfigPusherImpl.java:129)[11
7:org.opendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.processSingle(ConfigPusherImpl.java:83)[117:org.o
pendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.process(ConfigPusherImpl.java:74)[117:org.openday
light.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.osgi.ConfigPersisterActivator$2.run(ConfigPersisterActivator.java:
131)[117:org.opendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_79]
2016-02-14 11:58:12,402 | ERROR | config-pusher | PacketHandler | 512 - org.opendaylight.usecplugin.imp
l - 1.0.0.Beryllium | failed: LWM
java.lang.IllegalStateException: Optional.get() cannot be called on an absent value
at com.google.common.base.Absent.get(Absent.java:47)
at org.opendaylight.usecplugin.impl.PacketHandler.getLWMSample(PacketHandler.java:87)
at org.opendaylight.usecplugin.impl.UsecpluginProvider.onSessionInitiated(UsecpluginProvider.java:53)
at org.opendaylight.controller.md.sal.binding.util.BindingContextUtils.createProviderContextAndInitialize(BindingCont
extUtils.java:56)
at org.opendaylight.controller.sal.binding.impl.RootBindingAwareBroker.registerProvider(RootBindingAwareBroker.java:1
87)
at org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.usecplugin.impl.rev141210.UsecpluginModule.create
Instance(UsecpluginModule.java:29)
at org.opendaylight.controller.config.spi.AbstractModule.getInstance(AbstractModule.java:82)
at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_79]
at org.opendaylight.controller.config.manager.impl.dependencyresolver.DependencyResolverManager$ModuleInvocationHandl
er.handleInvocation(DependencyResolverManager.java:149)
at com.google.common.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:87)
at com.sun.proxy.$Proxy70.getInstance(Unknown Source)
at org.opendaylight.controller.config.manager.impl.ConfigTransactionControllerImpl.secondPhaseCommit(ConfigTransactio
nControllerImpl.java:421)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.secondPhaseCommit(ConfigRegistryImpl.java:287)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.commitConfig(ConfigRegistryImpl.java:227)
at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_79]
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75)[:1.7.0_79]
at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_79]
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279)[:1.7.0_79]
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:193)[:1.7.0_79]
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:175)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:117)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:54)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)[:1.7.0_79]
at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252)[:1.7.0_79]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)[:1.7.0_79]
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanProxy$InvokeHandler.invoke(MXBeanProxy.java:150)[:1.7.0_79]
at com.sun.jmx.mbeanserver.MXBeanProxy.invoke(MXBeanProxy.java:167)[:1.7.0_79]
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:252)[:1.7.0_79]
at com.sun.proxy.$Proxy22.commitConfig(Unknown Source)[105:org.opendaylight.controller.config-api:0.4.0.Beryllium]
at org.opendaylight.controller.config.util.ConfigRegistryJMXClient.commitConfig(ConfigRegistryJMXClient.java:110)[109
:org.opendaylight.controller.config-util:0.4.0.Beryllium]
at org.opendaylight.controller.config.facade.xml.transactions.TransactionProvider.commitTransaction(TransactionProvid
er.java:142)[115:org.opendaylight.controller.config-manager-facade-xml:0.4.0.Beryllium]
at org.opendaylight.controller.config.facade.xml.ConfigSubsystemFacade.commitSilentTransaction(ConfigSubsystemFacade.
java:138)[115:org.opendaylight.controller.config-manager-facade-xml:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.pushConfig(ConfigPusherImpl.java:312)[117:org.ope
ndaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.pushConfigWithConflictingVersionRetries(ConfigPus
herImpl.java:164)[117:org.opendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.internalPushConfigs(ConfigPusherImpl.java:129)[11
7:org.opendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.processSingle(ConfigPusherImpl.java:83)[117:org.o
pendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.process(ConfigPusherImpl.java:74)[117:org.openday
light.controller.config-persister-impl:0.4.0.Beryllium]
at org.opendaylight.controller.config.persist.impl.osgi.ConfigPersisterActivator$2.run(ConfigPersisterActivator.java:
131)[117:org.opendaylight.controller.config-persister-impl:0.4.0.Beryllium]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_79]