Bharath Vissapragada created HBASE-23731: --------------------------------------------
Summary: TestFromClientSide flakey after junit upgrade Key: HBASE-23731 URL: https://issues.apache.org/jira/browse/HBASE-23731 Project: HBase Issue Type: Bug Components: test Affects Versions: HBASE-18095 Reporter: Bharath Vissapragada Assignee: Bharath Vissapragada The cluster shutdown and restart between parameterized runs causes a thread leak with stacks like follows. {noformat} 2020-01-22 09:52:10,900 WARN [LeaseRenewer:hostname@localhost:62252] impl.LeaseRenewer(438): Failed to renew lease for [DFSClient_NONMAPREDUCE_-1123200667_19] for 73 seconds. Will retry shortly ... java.net.ConnectException: Call From xxxxx/xxxx to localhost:62252 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at sun.reflect.GeneratedConstructorAccessor64.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:801) at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732) at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1493) at org.apache.hadoop.ipc.Client.call(Client.java:1435) at org.apache.hadoop.ipc.Client.call(Client.java:1345) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:227) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116) at com.sun.proxy.$Proxy29.renewLease(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.renewLease(ClientNamenodeProtocolTranslatorPB.java:613) at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:409) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:163) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:155) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:346) at com.sun.proxy.$Proxy30.renewLease(Unknown Source) at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:372) at com.sun.proxy.$Proxy33.renewLease(Unknown Source) at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:372) at com.sun.proxy.$Proxy33.renewLease(Unknown Source) at org.apache.hadoop.hdfs.DFSClient.renewLease(DFSClient.java:560) at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.renew(LeaseRenewer.java:395) at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.run(LeaseRenewer.java:415) at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.access$600(LeaseRenewer.java:76) at org.apache.hadoop.hdfs.client.impl.LeaseRenewer$1.run(LeaseRenewer.java:307) at java.lang.Thread.run(Thread.java:748) {noformat} While the issue existed even before, it looks like junit 4.12 somehow was masking it. Upgrade to 4.13 made it worse. The host:port refers to already shutdown hdfs cluster, so ideally this thread shouldn't be there in the first place. A culprit could be leaking filesystem / dfsclient objects. -- This message was sent by Atlassian Jira (v8.3.4#803005)