Can someone with administrator access to the Jenkins VMs please take a look at the /etc/hosts configuration?
TestIPC often fails in Jenkins runs due to a timeout in InetAddress.getLocalHost. Most likely a missing entry in /etc/hosts for the system hostname. e.g. https://builds.apache.org/job/PreCommit-HADOOP-Build/4352//testReport/org.apache.hadoop.ipc/TestIPC/testRetryProxy/ https://builds.apache.org/job/PreCommit-HADOOP-Build/4355/testReport/org.apache.hadoop.ipc/TestIPC/testRetryProxy/ https://builds.apache.org/job/PreCommit-HADOOP-Build/4347/testReport/org.apache.hadoop.ipc/TestIPC/testRetryProxy/ java.lang.Exception: test timed out after 300000 milliseconds at java.net.Inet4AddressImpl.getLocalHostName(Native Method) at java.net.InetAddress.getLocalHost(InetAddress.java:1374) at org.apache.hadoop.net.NetUtils.getConnectAddress(NetUtils.java:372) at org.apache.hadoop.net.NetUtils.getConnectAddress(NetUtils.java:359) at org.apache.hadoop.ipc.TestIPC$TestInvocationHandler.invoke(TestIPC.java:212) at org.apache.hadoop.ipc.$Proxy11.dummyRun(Unknown Source) at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:101) at org.apache.hadoop.ipc.$Proxy11.dummyRun(Unknown Source) at org.apache.hadoop.ipc.TestIPC.testRetryProxy(TestIPC.java:1060) Thanks, Arpit -- CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.