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>


Namenode and Datanode (on both machines) are up & running without errors

regards




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




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