[jira] [Created] (HDFS-13743) Router throws NullPointerException due to the invalid initialization of MountTableResolver

["Takanobu Asanuma (JIRA)" <ji...@apache.org>]

Takanobu Asanuma created HDFS-13743:
---------------------------------------

             Summary: 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


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-dev-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-dev-help@hadoop.apache.org