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From Manoj Khangaonkar <khangaon...@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 18:40:48 GMT
Thanks


On Mon, Feb 24, 2014 at 6:39 PM, Azuryy Yu <azuryyyu@gmail.com> wrote:

> 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/
>>
>
>


-- 
http://khangaonkar.blogspot.com/

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