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https://issues.apache.org/jira/browse/HDFS-13743?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yiqun Lin updated HDFS-13743:
-----------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 3.1.2
3.0.4
2.9.2
3.2.0
2.10.0
Status: Resolved (was: Patch Available)
Committed this to trunk, branch-3.1, branch-3.0, branch-2.9 and branch-2.
Thanks [~tasanuma0829] for the contribution and thanks [~elgoiri] for the
review.
> 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
> Fix For: 2.10.0, 3.2.0, 2.9.2, 3.0.4, 3.1.2
>
> Attachments: HDFS-13743.1.patch, HDFS-13743.2.patch,
> HDFS-13743.3.patch, HDFS-13743.4.patch, HDFS-13743.5.patch
>
>
> 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.
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