[ https://issues.apache.org/jira/browse/HDFS-13743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16547817#comment-16547817 ]
Takanobu Asanuma commented on HDFS-13743: ----------------------------------------- I think I can submit a patch for the issue within a couple of days. Thanks. > RBF: Router throws NullPointerException due to the invalid initialization of > MountTableResolver > ----------------------------------------------------------------------------------------------- > > Key: HDFS-13743 > URL: https://issues.apache.org/jira/browse/HDFS-13743 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Takanobu Asanuma > Assignee: Takanobu Asanuma > Priority: Major > > When {{dfs.federation.router.default.nameserviceId}} isn't set and any other > default name service isn't found, clients can't submit requests to the router > because of {{NullPointerException}}. > # client side > {noformat} > $ hadoop fs -ls hdfs://router:8888/ > ls: java.lang.NullPointerException > {noformat} > # Router log > {noformat} > java.lang.NullPointerException > at java.util.TreeMap.getEntry(TreeMap.java:347) > at java.util.TreeMap.containsKey(TreeMap.java:232) > at java.util.TreeSet.contains(TreeSet.java:234) > at > org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getLocationsForPath(RouterRpcServer.java:2287) > at > org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getLocationsForPath(RouterRpcServer.java:2239) > at > org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getFileInfo(RouterRpcServer.java:1163) > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getFileInfo(ClientNamenodeProtocolServerSideTranslatorPB.java:966) > 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$RpcCall.run(Server.java:876) > at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822) > 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:1689) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682) > {noformat} > The cause of this error is that the initialization of {{MountTableResolver}} > doesn't work properly. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org