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From Yanbo Liang <yanboha...@gmail.com>
Subject Re: Not able to place enough replicas
Date Tue, 15 Jul 2014 02:59:21 GMT
Maybe the user 'test' has no privilege of write operation.
You can refer the ERROR log like:
org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException
as:test (auth:SIMPLE)


2014-07-15 2:07 GMT+08:00 Bogdan Raducanu <lrdbgy@gmail.com>:

> I'm getting this error while writing many files.
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Not
> able to place enough replicas, still in need of 4 to reach 4
>
> I've set logging to DEBUG but still there is no reason printed. There
> should've been a reason after this line but instead there's just an empty
> line.
> Has anyone seen something like this before? It is seen on a 4 node cluster
> running hadoop 2.2
>
>
> org.apache.hadoop.hdfs.StateChange: *DIR* NameNode.create: file /file_1002
> for DFSClient_NONMAPREDUCE_839626346_1 at 192.168.180.1
> org.apache.hadoop.hdfs.StateChange: DIR* NameSystem.startFile:
> src=/file_1002, holder=DFSClient_NONMAPREDUCE_839626346_1,
> clientMachine=192.168.180.1, createParent=true, replication=4,
> createFlag=[CREATE, OVERWRITE]
> org.apache.hadoop.hdfs.StateChange: DIR* addFile: /file_1002 is added
> org.apache.hadoop.hdfs.StateChange: DIR* NameSystem.startFile: add
> /file_1002 to namespace for DFSClient_NONMAPREDUCE_839
> << ... many other operations ... >>
> 8 seconds later:
> org.apache.hadoop.hdfs.StateChange: *BLOCK* NameNode.addBlock: file
> /file_1002 fileId=189252 for DFSClient_NONMAPREDUCE_839626346_1
> org.apache.hadoop.hdfs.StateChange: BLOCK* NameSystem.getAdditionalBlock:
> file /file_1002 for DFSClient_NONMAPREDUCE_839626346_1
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Not
> able to place enough replicas, still in need of 4 to reach 4
> << EMPTY LINE >>
> org.apache.hadoop.security.UserGroupInformation:
> PriviledgedActionException as:test (auth:SIMPLE) cause:java.io.IOException:
> File /file_1002 could only be replicated to 0 nodes instead of
> minReplication (=1).  There are 4 datanode(s) running and no node(s) are
> excluded in this operation.
> org.apache.hadoop.ipc.Server: IPC Server handler 9 on 8020, call
> org.apache.hadoop.hdfs.protocol.ClientProtocol.addBlock from
> 192.168.180.1:49592 Call#1321 Retry#0: error: java.io.IOException: File
> /file_1002 could only be replicated to 0 nodes instead of minReplication
> (=1).  There are 4 datanode(s) running and no node(s) are excluded in this
> operation.
> java.io.IOException: File /file_1002 could only be replicated to 0 nodes
> instead of minReplication (=1).  There are 4 datanode(s) running and no
> node(s) are excluded in this operation.
>         at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget(BlockManager.java:1384)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2477)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555)
>         at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)
>         at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59582)
>         at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:415)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042):0
>
>

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