[ https://issues.apache.org/jira/browse/RANGER-2745?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
bianqi closed RANGER-2745.
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> execute hdfs dfs -ls / NPE
> --------------------------
>
> Key: RANGER-2745
> URL: https://issues.apache.org/jira/browse/RANGER-2745
> Project: Ranger
> Issue Type: Bug
> Components: Ranger
> Affects Versions: 1.2.0
> Reporter: bianqi
> Priority: Major
> Fix For: 1.2.1
>
>
> when I execute hdfs dfs -ls / ，Viewing the Hadoop logs found the following error
> bq. 2020-02-27 15:20:23,058 WARN org.apache.hadoop.ipc.Server: IPC Server handler 5 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.getFileInfo from xxx:11136 Call#0 Retry#0
> bq. java.lang.NullPointerException
> bq. at org.apache.hadoop.hdfs.DFSUtil.bytes2String(DFSUtil.java:314)
> bq. at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.getINodeAttrs(FSPermissionChecker.java:238)
> bq. at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:183)
> bq. at org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkPermission(FSDirectory.java:1752)
> bq. at org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getFileInfo(FSDirStatAndListingOp.java:100)
> bq. at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFileInfo(FSNamesystem.java:3831)
> bq. at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getFileInfo(NameNodeRpcServer.java:1012)
> bq. at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getFileInfo(ClientNamenodeProtocolServerSideTranslatorPB.java:855)
> bq. at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> bq. at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
> bq. at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
> bq. at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2217)
> bq. at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2213)
> bq. at java.security.AccessController.doPrivileged(Native Method)
> bq. at javax.security.auth.Subject.doAs(Subject.java:422)
> bq. at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1758)
> bq. at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2213)
> bq.
> But when I execute hdfs dfs -ls /tmp ，Did not report an error，And control permissions functions are normal.
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