Github user marmbrus commented on the pull request:
https://github.com/apache/spark/pull/796#issuecomment-46076862
@pwendell, any idea what is going on here? I keep getting:
```
Building remotely on Ubuntu 14.04 on EC2 6 (ec2) in workspace
/home/ubuntu/workspace/SparkPullRequestBuilder
java.io.IOException: remote file operation failed:
/home/ubuntu/workspace/SparkPullRequestBuilder at
hudson.remoting.Channel@7291f33e:Ubuntu 14.04 on EC2 6
at hudson.FilePath.act(FilePath.java:916)
at hudson.FilePath.act(FilePath.java:893)
at org.jenkinsci.plugins.gitclient.Git.getClient(Git.java:66)
at hudson.plugins.git.GitSCM.createClient(GitSCM.java:566)
at hudson.plugins.git.GitSCM.createClient(GitSCM.java:558)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:874)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1252)
at
hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:615)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:524)
at hudson.model.Run.execute(Run.java:1710)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:234)
Caused by: java.io.IOException: Remote call on Ubuntu 14.04 on EC2 6 failed
at hudson.remoting.Channel.call(Channel.java:748)
at hudson.FilePath.act(FilePath.java:909)
... 13 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class
com.sun.proxy.$Proxy8
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.reflect.Proxy.newInstance(Proxy.java:748)
at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:739)
at
hudson.remoting.RemoteInvocationHandler.wrap(RemoteInvocationHandler.java:100)
at hudson.remoting.Channel.export(Channel.java:584)
at hudson.remoting.Channel.export(Channel.java:553)
at
org.jenkinsci.plugins.gitclient.LegacyCompatibleGitAPIImpl.writeReplace(LegacyCompatibleGitAPIImpl.java:161)
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
java.io.ObjectStreamClass.invokeWriteReplace(ObjectStreamClass.java:1075)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1134)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
at hudson.remoting.UserRequest._serialize(UserRequest.java:155)
at hudson.remoting.UserRequest.serialize(UserRequest.java:164)
at hudson.remoting.UserRequest.perform(UserRequest.java:126)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Recording test results
Finished: FAILURE
```
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