ZanderXu opened a new pull request, #5162: URL: https://github.com/apache/hadoop/pull/5162
### Description of PR Jira: [HDFS-16853](https://issues.apache.org/jira/browse/HDFS-16853) The UT `TestLeaseRecovery2#testHardLeaseRecoveryAfterNameNodeRestart` failed with error message: `Waiting for cluster to become active`. And the blocking jstack as bellows: ``` "BP-1618793397-192.168.3.4-1669198559828 heartbeating to localhost/127.0.0.1:54673" #260 daemon prio=5 os_prio=31 tid=0x 00007fc1108fa000 nid=0x19303 waiting on condition [0x0000700017884000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000007430a9ec0> (a java.util.concurrent.SynchronousQueue$TransferQueue) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.SynchronousQueue$TransferQueue.awaitFulfill(SynchronousQueue.java:762) at java.util.concurrent.SynchronousQueue$TransferQueue.transfer(SynchronousQueue.java:695) at java.util.concurrent.SynchronousQueue.put(SynchronousQueue.java:877) at org.apache.hadoop.ipc.Client$Connection.sendRpcRequest(Client.java:1186) at org.apache.hadoop.ipc.Client.call(Client.java:1482) at org.apache.hadoop.ipc.Client.call(Client.java:1429) at org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:258) at org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:139) at com.sun.proxy.$Proxy23.sendHeartbeat(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB.sendHeartbeat(DatanodeProtocolClient SideTranslatorPB.java:168) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.sendHeartBeat(BPServiceActor.java:570) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:714) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:915) at java.lang.Thread.run(Thread.java:748) ``` After looking into the code and found that this bug is imported by HADOOP-18324. Because `RpcRequestSender` exited without cleaning up the `rpcRequestQueue`, then caused `BPServiceActor` was blocked in sending request. ### How was this patch tested? The failed UT: ``` org.apache.hadoop.hdfs.TestLeaseRecovery2#testHardLeaseRecoveryAfterNameNodeRestart org.apache.hadoop.hdfs.TestLeaseRecovery2#testHardLeaseRecoveryAfterNameNodeRestart2 org.apache.hadoop.hdfs.TestLeaseRecovery2#testHardLeaseRecoveryWithRenameAfterNameNodeRestart ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
