We spoted an execption when reading operational state of lisp

[root@overcloud-novacompute-0 ~]# curl -XGET -u admin:admin http://localhost:8183/restconf/operational/lisp:lisp-state | python -m json.tool
...
No JSON object could be decoded

cat /var/log/honeycomb/honeycomb.log

java.lang.IllegalStateException: Unexpected size of list: []. Single item expected
at io.fd.honeycomb.translate.util.RWUtils.lambda$singleItemCollector$0(RWUtils.java:53) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at java.util.function.Function.lambda$andThen$1(Function.java:88) ~[na:1.8.0_131]
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:503) ~[na:1.8.0_131]
at io.fd.hc2vpp.lisp.context.util.EidMappingContext.getId(EidMappingContext.java:85) ~[lisp2vpp-1.17.07-SNAPSHOT.jar:na]
at io.fd.hc2vpp.lisp.translate.read.RemoteMappingCustomizer.lambda$getAllIds$3(RemoteMappingCustomizer.java:220) ~[lisp2vpp-1.17.07-SNAPSHOT.jar:na]
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_131]
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_131]
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_131]
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_131]
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) ~[na:1.8.0_131]
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_131]
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_131]
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_131]
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_131]
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_131]
at io.fd.hc2vpp.lisp.translate.read.RemoteMappingCustomizer.getAllIds(RemoteMappingCustomizer.java:223) ~[lisp2vpp-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.GenericListReader.getAllIds(GenericListReader.java:94) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.DelegatingReader$DelegatingListReader.getAllIds(DelegatingReader.java:82) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader$CompositeListReader.readList(CompositeReader.java:199) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:121) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:127) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:127) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader$CompositeListReader.readList(CompositeReader.java:207) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:121) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:127) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:127) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader$CompositeListReader.readList(CompositeReader.java:207) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:121) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:127) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readChildren(CompositeReader.java:127) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.readCurrentAttributes(CompositeReader.java:145) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.util.read.AbstractGenericReader.readCurrent(AbstractGenericReader.java:61) ~[translate-utils-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReader.read(CompositeReader.java:84) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.translate.impl.read.registry.CompositeReaderRegistry.read(CompositeReaderRegistry.java:122) ~[translate-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.data.impl.ReadableDataTreeDelegator.readNode(ReadableDataTreeDelegator.java:136) ~[data-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.data.impl.ReadableDataTreeDelegator.read(ReadableDataTreeDelegator.java:102) ~[data-impl-1.17.07-SNAPSHOT.jar:na]
at io.fd.honeycomb.data.impl.ReadOnlyTransaction.read(ReadOnlyTransaction.java:76) ~[data-impl-1.17.07-SNAPSHOT.jar:na]
at org.opendaylight.netconf.sal.restconf.impl.BrokerFacade.readDataViaTransaction(BrokerFacade.java:534) ~[sal-rest-connector-1.4.4-Boron-SR4.jar:na]
at org.opendaylight.netconf.sal.restconf.impl.BrokerFacade.readDataViaTransaction(BrokerFacade.java:526) ~[sal-rest-connector-1.4.4-Boron-SR4.jar:na]
at org.opendaylight.netconf.sal.restconf.impl.BrokerFacade.readOperationalData(BrokerFacade.java:189) ~[sal-rest-connector-1.4.4-Boron-SR4.jar:na]
at org.opendaylight.netconf.sal.restconf.impl.RestconfImpl.readOperationalData(RestconfImpl.java:735) ~[sal-rest-connector-1.4.4-Boron-SR4.jar:na]
at org.opendaylight.netconf.sal.restconf.impl.StatisticsRestconfServiceWrapper.readOperationalData(StatisticsRestconfServiceWrapper.java:116) ~[sal-rest-connector-1.4.4-Boron-SR4.ja
r:na]
at org.opendaylight.netconf.sal.rest.impl.RestconfCompositeWrapper.readOperationalData(RestconfCompositeWrapper.java:80) ~[sal-rest-connector-1.4.4-Boron-SR4.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185) ~[jersey-server-
1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.uri.rules.ResourceObjectRule.accept(ResourceObjectRule.java:100) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) ~[jersey-server-1.19.1.jar:1.19.1]
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) ~[jersey-servlet-1.19.1.jar:1.19.1]
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558) ~[jersey-servlet-1.19.1.jar:1.19.1]
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733) ~[jersey-servlet-1.19.1.jar:1.19.1]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:845) ~[jetty-servlet-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1689) ~[jetty-servlet-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:308) ~[jetty-servlets-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:262) ~[jetty-servlets-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668) ~[jetty-servlet-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581) [jetty-servlet-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:513) [jetty-security-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511) [jetty-servlet-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:513) [jetty-security-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:461) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.Server.handle(Server.java:524) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:319) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:253) [jetty-server-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273) [jetty-io-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) [jetty-io-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [jetty-io-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [jetty-util-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [jetty-util-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [jetty-util-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [jetty-util-9.3.11.v20160721.jar:9.3.11.v20160721]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [jetty-util-9.3.11.v20160721.jar:9.3.11.v20160721]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]