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From Madhav Sharan <msha...@usc.edu>
Subject Re: Output File could only be replicated to 0 nodes
Date Mon, 01 Aug 2016 06:57:35 GMT
Thanks everyone for help. I believe the error was coming because of
increase in Non DFS memory usage.

Name: 172.31.11.49:50010
Decommission Status : Normal
Configured Capacity: 74033672192 (68.95 GB)
DFS Used: 6814511104 (6.35 GB)
Non DFS Used: 4128133120 (3.84 GB)
DFS Remaining: 63091027968 (58.76 GB)
DFS Used%: 9.20%
DFS Remaining%: 85.22%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 1



Name: 172.31.11.49:50010
Decommission Status : Normal
Configured Capacity: 74033672192 (68.95 GB)
DFS Used: 7336382464 (6.83 GB)
Non DFS Used: 60541867008 (56.38 GB)
DFS Remaining: 6155422720 (5.73 GB)
DFS Used%: 9.91%
DFS Remaining%: 8.31%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 847


--
Madhav Sharan


On Mon, Jul 25, 2016 at 10:00 AM, Gagan Brahmi <gaganbrahmi@gmail.com>
wrote:

> There can be several reasons you see this error.
>
> The most common ones are:
>
> Disk Space on Datanodes - Like mentioned earlier in the thread.
> Inconsistent DataNodes - You can try to restart HDFS which should clean it
> up.
> Bad or Unresponsive Datanode
> Negative 'Block Size' in hdfs-site.xml.
> Network communication issues.
>
>
> Regards,
> Gagan Brahmi
>
> On Mon, Jul 25, 2016 at 9:14 AM, Gabriel Balan <gabriel.balan@oracle.com>
> wrote:
>
>>
>> Hi
>>
>> org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
>> /user/pts/output/OTSOutput/_temporary/1/_temporary/attempt_1463_0008_m_000018_2/video.mp4.of.txt
>> could only be replicated to 0 nodes instead of minReplication (=1).  *There
>> are 9 datanode(s) running* and no node(s) are excluded in this operation.
>>
>> Can it be there is no more space left (for HDFS) on the host running data
>> nodes?
>>
>> Try running "hdfs dfsadmin -report"
>>
>> hth
>>
>> Gabriel Balan
>>
>> On 7/24/2016 7:53 PM, Madhav Sharan wrote:
>>
>> Hi hadoop users,
>>
>> We are running a mapreduce jobs with 10 nodes. Each  map job process a
>> video and generate a .txt file as output. We are getting DataStreamer
>> Exception that File could only be replicated to 0 nodes instead of
>> minReplication (=1). This is the output file we expect after successful
>> run.
>>
>> Any help is appreciated. We checked hdfs has space available and all
>> nodes are responding.
>>
>> Full trace -
>>
>> 2016-07-24 21:55:08,343 WARN [Thread-214]
>> org.apache.hadoop.hdfs.DFSClient: DataStreamer Exception
>>
>> org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
>> /user/pts/output/OTSOutput/_temporary/1/_temporary/attempt_1463_0008_m_000018_2/video.mp4.of.txt
>> could only be replicated to 0 nodes instead of minReplication (=1).  There
>> are 9 datanode(s) running and no node(s) are excluded in this operation.
>>
>>         at
>> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1547)
>>
>>         at
>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3107)
>>
>>         at
>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3031)
>>
>>         at
>> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:724)
>>
>>         at
>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:492)
>>
>>         at
>> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
>>
>>         at
>> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
>>
>>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969)
>>
>>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049)
>>
>>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045)
>>
>>         at java.security.AccessController.doPrivileged(Native Method)
>>
>>         at javax.security.auth.Subject.doAs(Subject.java:415)
>>
>>         at
>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
>>
>>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)
>>
>>
>>         at org.apache.hadoop.ipc.Client.call(Client.java:1475)
>>
>>         at org.apache.hadoop.ipc.Client.call(Client.java:1412)
>>
>>         at
>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
>>
>>         at com.sun.proxy.$Proxy12.addBlock(Unknown Source)
>>
>>         at
>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:418)
>>
>>         at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>>
>>         at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>
>>         at java.lang.reflect.Method.invoke(Method.java:606)
>>
>>         at
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
>>
>>         at
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>>
>>         at com.sun.proxy.$Proxy13.addBlock(Unknown Source)
>>
>>         at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1459)
>>
>>         at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1255)
>>
>>         at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:449)
>>
>>
>> --
>> Madhav Sharan
>>
>>
>> --
>> The statements and opinions expressed here are my own and do not necessarily represent
those of Oracle Corporation.
>>
>>
>

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