HysterixCommand issue running in Google App engine

[Arun Menon]

I am trying to deploy a code where i have added Hysterix Command Objects. When i deploy, i get the following error .Looks like sun.misc.unsafe is not whitelisted in GAE...

Any work-arounds here ?....

Uncaught exception from servlet

java.lang.NoClassDefFoundError: sun.misc.Unsafe is a restricted class. Please see the Google App Engine developer's guide for more details.

at com.google.apphosting.runtime.security.shared.stub.sun.misc.Unsafe.<clinit>(Unsafe.java)

at com.netflix.hystrix.util.Striped64.getUnsafe(Striped64.java:341)

at com.netflix.hystrix.util.Striped64.<clinit>(Striped64.java:321)

at com.netflix.hystrix.util.HystrixRollingNumber$CumulativeSum.<init>(HystrixRollingNumber.java:446)

at com.netflix.hystrix.util.HystrixRollingNumber.<init>(HystrixRollingNumber.java:64)

at com.netflix.hystrix.util.HystrixRollingNumber.<init>(HystrixRollingNumber.java:67)

at com.netflix.hystrix.HystrixCommandMetrics.<init>(HystrixCommandMetrics.java:123)

at com.netflix.hystrix.HystrixCommandMetrics.getInstance(HystrixCommandMetrics.java:71)

at com.netflix.hystrix.HystrixCommand.<init>(HystrixCommand.java:263)

at com.netflix.hystrix.HystrixCommand.<init>(HystrixCommand.java:188)

at com.netflix.hystrix.HystrixCommand.<init>(HystrixCommand.java:170)

at com.espn.commands.GetUserCardCommand.<init>(GetUserCardCommand.java:16)

at com.espncricinfo.gnow.CreateNowCards.sendCard(CreateNowCards.java:398)

at com.espncricinfo.gnow.CreateNowCards.createTableCard(CreateNowCards.java:306)

at com.espncricinfo.gnow.CreateNowCards.processUsers(CreateNowCards.java:240)

at com.espncricinfo.gnow.CreateNowCards.process(CreateNowCards.java:134)

at com.espncricinfo.gnow.CreateNowCards.doGet(CreateNowCards.java:115)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)

at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)

at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)

at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:60)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)

at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)

at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)

at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)

at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)

at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)

at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)

at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:254)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.Server.handle(Server.java:326)

at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)

at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)

at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)

at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)

at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:146)

at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:527)

at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)

at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)

at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:220)

at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)

at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)

at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:441)

at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)

at java.lang.Thread.run(Thread.java:724)

[Matt Jacobs]

Arun -

Thanks for the report.  At the moment, there's no facility in Hystrix to avoid usage of sun.misc.Unsafe.  This sounds like a useful thing to do, but it hasn't been done yet.

Here's an example of the type of work that needs to get done: https://github.com/msgpack/msgpack-java/issues/194.

I've created a Github issue to track this.  https://github.com/Netflix/Hystrix/issues/734

-Matt