Github user neykov commented on the pull request:
https://github.com/apache/brooklyn-server/pull/73#issuecomment-199373340
Once tasks started piling up started getting the following error in the
logs:
```
2016-03-21 17:33:11,450 | INFO | tp1904918854-187 | LoggingInInterceptor
| 107 - org.apache.cxf.cxf-core - 3.1.4 | Inbound Message
----------------------------
ID: 557
Address: http://localhost:8081/v1/activities/vTzq6haF
Http-Method: GET
Content-Type:
Headers: {Accept=[application/json, text/javascript, */*; q=0.01],
accept-encoding=[gzip, deflate, sdch], Accept-Language=[en-US,en;q=0.8],
Authorization=[Basic YWRtaW46YWRtaW4=], connection=[keep-alive],
Content-Type=[null], Host=[localhost:8081], Referer=[http://localhost:8081/],
User-Agent=[Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_2) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36],
X-Requested-With=[XMLHttpRequest]}
--------------------------------------
2016-03-21 17:33:11,668 | ERROR | tp1904918854-187 | JAXRSUtils
| 111 - org.apache.cxf.cxf-rt-frontend-jaxrs - 3.1.4 | Problem with
writing the data, class org.apache.brooklyn.rest.domain.TaskSummary,
ContentType: application/json
2016-03-21 17:33:11,671 | WARN | tp1904918854-187 | PhaseInterceptorChain
| 107 - org.apache.cxf.cxf-core - 3.1.4 | Interceptor for
{http://resources.rest.brooklyn.apache.org/}AccessResource has thrown
exception, unwinding now
org.apache.cxf.interceptor.Fault:
com/fasterxml/jackson/databind/JsonMappingException$Reference
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.handleWriteException(JAXRSOutInterceptor.java:382)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.serializeMessage(JAXRSOutInterceptor.java:257)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.handleWriteException(JAXRSOutInterceptor.java:384)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.serializeMessage(JAXRSOutInterceptor.java:257)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.processResponse(JAXRSOutInterceptor.java:118)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.handleMessage(JAXRSOutInterceptor.java:81)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)[107:org.apache.cxf.cxf-core:3.1.4]
at
org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:83)[107:org.apache.cxf.cxf-core:3.1.4]
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)[107:org.apache.cxf.cxf-core:3.1.4]
at
org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)[107:org.apache.cxf.cxf-core:3.1.4]
at
org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:251)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:293)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:217)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:687)[50:javax.servlet-api:3.1.0]
at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:268)[119:org.apache.cxf.cxf-rt-transports-http:3.1.4]
at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)[190:org.eclipse.jetty.servlet:9.2.10.v20150310]
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)[190:org.eclipse.jetty.servlet:9.2.10.v20150310]
at
org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:70)[211:org.ops4j.pax.web.pax-web-jetty:4.2.3]
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)[188:org.eclipse.jetty.security:9.2.10.v20150310]
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:271)[211:org.ops4j.pax.web.pax-web-jetty:4.2.3]
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)[190:org.eclipse.jetty.servlet:9.2.10.v20150310]
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:80)[211:org.ops4j.pax.web.pax-web-jetty:4.2.3]
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.server.Server.handle(Server.java:497)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)[189:org.eclipse.jetty.server:9.2.10.v20150310]
at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)[181:org.eclipse.jetty.io:9.2.10.v20150310]
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)[192:org.eclipse.jetty.util:9.2.10.v20150310]
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)[192:org.eclipse.jetty.util:9.2.10.v20150310]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_80]
Caused by: java.lang.NoClassDefFoundError:
com/fasterxml/jackson/databind/JsonMappingException$Reference
at
com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:177)[21:com.fasterxml.jackson.core.jackson-databind:2.4.5]
at
com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:187)[21:com.fasterxml.jackson.core.jackson-databind:2.4.5]
at
com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:647)[21:com.fasterxml.jackson.core.jackson-databind:2.4.5]
at
com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152)[21:com.fasterxml.jackson.core.jackson-databind:2.4.5]
at
com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:128)[21:com.fasterxml.jackson.core.jackson-databind:2.4.5]
at
com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:602)[21:com.fasterxml.jackson.core.jackson-databind:2.4.5]
at
com.fasterxml.jackson.jaxrs.base.ProviderBase.writeTo(ProviderBase.java:648)
at
org.apache.cxf.jaxrs.utils.JAXRSUtils.writeMessageBody(JAXRSUtils.java:1378)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.serializeMessage(JAXRSOutInterceptor.java:235)[111:org.apache.cxf.cxf-rt-frontend-jaxrs:3.1.4]
... 38 more
2016-03-21 17:33:11,672 | INFO | tp1904918854-187 | LoggingOutInterceptor
| 107 - org.apache.cxf.cxf-core - 3.1.4 | Outbound Message
---------------------------
ID: 557
Response-Code: 500
Content-Type: application/json
Headers: {Content-Type=[application/json], Cache-Control=[no-cache,
no-store], Pragma=[no-cache], Expires=[0]}
Messages: (message truncated to 49152 bytes)
Payload: {"id":"vTzq6haF","displayName":"provisioning
(aws-ec2)","description":"","entityId":"XVIqFcDO","entityDisplayName":"MachineEntity:XVIq","tags":["org.apache.brooklyn.core.mgmt.BrooklynTaskTags$Entitle
```
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