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https://issues.apache.org/jira/browse/HDFS-15998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Haiyang Hu updated HDFS-15998:
------------------------------
Description:
Use the Hadoop 3.2.0 client execute the following command: occasionally appear
NPE.
hdfs dfsadmin -Dfs.defaultFS=hdfs://xxx -listOpenFiles -blockingDecommission
-path /xxx
was:
Use the Hadoop 3.2.0 client execute the following command: occasionally appear
NPE.
hdfs dfsadmin -Dfs.defaultFS=hdfs://xxx -listOpenFiles -blockingDecommission
-path /xxx
{code:java}
// code placeholder
21/03/17 14:17:38 DEBUG retry.RetryInvocationHandler: Exception while invoking
call #0 ClientNamenodeProtocolTranslatorPB.listOpenFiles over xxx:8020. Not
retrying because try once and fail.21/03/17 14:17:38 DEBUG
retry.RetryInvocationHandler: Exception while invoking call #0
ClientNamenodeProtocolTranslatorPB.listOpenFiles over xxx:8020. Not retrying
because try once and fail.
org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException):
java.lang.NullPointerException at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFilesBlockingDecom(FSNamesystem.java:1917)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.listOpenFiles(FSNamesystem.java:1876)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.listOpenFiles(NameNodeRpcServer.java:1453)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.listOpenFiles(ClientNamenodeProtocolServerSideTranslatorPB.java:1894)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025) at
org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:886) at
org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:828) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:422) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1903)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2717)
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1511) at
org.apache.hadoop.ipc.Client.call(Client.java:1457) at
org.apache.hadoop.ipc.Client.call(Client.java:1367) at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
at com.sun.proxy.$Proxy9.listOpenFiles(Unknown Source) at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.listOpenFiles(ClientNamenodeProtocolTranslatorPB.java:1952)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
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:422)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
at com.sun.proxy.$Proxy10.listOpenFiles(Unknown Source) at
org.apache.hadoop.hdfs.protocol.OpenFilesIterator.makeRequest(OpenFilesIterator.java:89)
at
org.apache.hadoop.hdfs.protocol.OpenFilesIterator.makeRequest(OpenFilesIterator.java:35)
at
org.apache.hadoop.fs.BatchedRemoteIterator.makeRequest(BatchedRemoteIterator.java:77)
at
org.apache.hadoop.fs.BatchedRemoteIterator.makeRequestIfNeeded(BatchedRemoteIterator.java:85)
at
org.apache.hadoop.fs.BatchedRemoteIterator.hasNext(BatchedRemoteIterator.java:99)
at org.apache.hadoop.hdfs.tools.DFSAdmin.printOpenFiles(DFSAdmin.java:1006)
at org.apache.hadoop.hdfs.tools.DFSAdmin.listOpenFiles(DFSAdmin.java:994) at
org.apache.hadoop.hdfs.tools.DFSAdmin.run(DFSAdmin.java:2431) at
org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76) at
org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
at org.apache.hadoop.hdfs.tools.DFSAdmin.main(DFSAdmin.java:2590)
List open files failed.
listOpenFiles: java.lang.NullPointerException
{code}
> Fix NullPointException In listOpenFiles
> ---------------------------------------
>
> Key: HDFS-15998
> URL: https://issues.apache.org/jira/browse/HDFS-15998
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.2.0
> Reporter: Haiyang Hu
> Priority: Major
>
> Use the Hadoop 3.2.0 client execute the following command: occasionally
> appear NPE.
> hdfs dfsadmin -Dfs.defaultFS=hdfs://xxx -listOpenFiles -blockingDecommission
> -path /xxx
>
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