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From Azuryy Yu <azury...@gmail.com>
Subject Re: hadoop 2.2.0 cluster setup error : could only be replicated to 0 nodes instead of minReplication (=1)
Date Tue, 25 Feb 2014 02:39:52 GMT
Generally, this is caused by insufficient space.

please check the total capacity of your cluster and used, remaining ratio,
and check dfs.datanode.du.reserved in the hdfs-site.xml

if this value is larger than your remained capacity, then you got this
Exception.



On Tue, Feb 25, 2014 at 10:35 AM, Manoj Khangaonkar
<khangaonkar@gmail.com>wrote:

> Hi
>
> Can one of the implementors comment on what conditions trigger this error
> ?
>
> All the data nodes show up as commissioned.  No errors during startup
>
> If I google for this error, there are several posts reporting the issue :
> but most of the answers have weak solutions like reformating and restarting
> none of which help.
>
> My guess is that this is a networking /port access issue. If anyone can
> shed light on what conditions cause this error , it would be much
> appreciated.
>
> regards
>
>
>
>
> On Mon, Feb 24, 2014 at 1:07 PM, Manoj Khangaonkar <khangaonkar@gmail.com>wrote:
>
>> Hi,
>>
>> I setup a cluster with
>>
>> machine1 : namenode and datanode
>> machine 2 : data node
>>
>> A simple hdfs copy is not working. Can someone help with this issue ?
>> Several folks have posted this error on the web, But I have seen a good
>> reason or solution.
>>
>> command:
>> bin/hadoop fs -copyFromLocal ~/hello /manoj/
>>
>> Error:
>> copyFromLocal: File /manoj/hello._COPYING_ could only be replicated to 0
>> nodes instead of minReplication (=1).  There are 2 datanode(s) running and
>> no node(s) are excluded in this operation.
>> 14/02/24 12:56:38 ERROR hdfs.DFSClient: Failed to close file
>> /manoj/hello._COPYING_
>> org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
>> /manoj/hello._COPYING_ could only be replicated to 0 nodes instead of
>> minReplication (=1).  There are 2 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$1.run(Server.java:2044)
>>     at java.security.AccessController.doPrivileged(Native Method)
>>     at javax.security.auth.Subject.doAs(Subject.java:396)
>>     at
>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
>>     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)
>>
>>     at org.apache.hadoop.ipc.Client.call(Client.java:1347)
>>     at org.apache.hadoop.ipc.Client.call(Client.java:1300)
>>     at
>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>>     at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
>>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>     at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>     at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>     at java.lang.reflect.Method.invoke(Method.java:597)
>>     at
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
>>     at
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>>     at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
>>     at
>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:330)
>>     at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1226)
>>     at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
>>     at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:514)
>>
>> My setup is very basic :
>> core-site.xml
>> <configuration>
>> <property>
>>     <name>fs.default.name</name>
>>         <value>hdfs://n-prd-bst-beacon01:9000</value>
>>           </property>
>>             <property>
>>                 <name>hadoop.tmp.dir</name>
>>                     <value>/home/manoj/hadoop-2.2.0/tmp</value>
>>                       </property>
>> </configuration>
>>
>> hdfs-site.xml
>> <configuration>
>> <property>
>>      <name>dfs.replication</name>
>>           <value>1</value>
>>              </property>
>>                 <property>
>>                      <name>dfs.permissions</name>
>>                           <value>false</value>
>>                              </property>
>> </configuration>
>>
>> slaves:
>> localhost
>> n-prd-bst-beacon02.advertising.aol.com
>>
>> Namenode and Datanode (on both machines) are up & running without errors
>>
>> regards
>>
>> --
>> http://khangaonkar.blogspot.com/
>>
>
>
>
> --
> http://khangaonkar.blogspot.com/
>

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