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From Lemon Cheng <lemon...@gmail.com>
Subject Re: Query about "hadoop dfs -cat" in hadoop-0-0.20.2
Date Fri, 17 Jun 2011 14:58:12 GMT
[appuser@localhost bin]$ ./hadoop dfs -ls
Found 2 items
drwxr-xr-x   - appuser supergroup          0 2011-04-26 09:41
/user/appuser/input
drwxr-xr-x   - appuser supergroup          0 2011-04-26 09:42
/user/appuser/output
[appuser@localhost bin]$ ./hadoop dfs -ls /usr/lemon/wordcount/input
Found 2 items
-rw-r--r--   1 appuser supergroup         22 2011-04-26 12:16
/usr/lemon/wordcount/input/file01
-rw-r--r--   1 appuser supergroup         28 2011-04-26 12:16
/usr/lemon/wordcount/input/file02
[appuser@localhost bin]$



On Fri, Jun 17, 2011 at 10:50 PM, Mostafa Gaber <moustafa.gaber@gmail.com>wrote:

> Can you send us the output of "hadoop dfs -ls"?
>
>
>
> On Jun 17, 2011, at 10:21, Lemon Cheng <lemoncmf@gmail.com> wrote:
>
> Hi,
>
> Thanks for your reply.
> I am not sure that. How can I prove that?
>
> I checked the localhost:50070, it shows 1 live node and 0 dead node.
> And  the log "hadoop-appuser-datanode-localhost.localdomain.log" shows:
>
> ************************************************************/
> 2011-06-17 19:59:38,658 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
> /************************************************************
> STARTUP_MSG: Starting DataNode
> STARTUP_MSG:   host = localhost.localdomain/127.0.0.1
> STARTUP_MSG:   args = []
> STARTUP_MSG:   version = 0.20.2
> STARTUP_MSG:   build =
> <https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20>
> https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r
> 911707; compiled by 'chrisdo' on Fri Feb 19 08:07:34 UTC 2010
> ************************************************************/
> 2011-06-17 19:59:46,738 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Registered
> FSDatasetStatusMBean
> 2011-06-17 19:59:46,749 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Opened info server at 50010
> 2011-06-17 19:59:46,752 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Balancing bandwith is
> 1048576 bytes/s
> 2011-06-17 19:59:46,812 INFO org.mortbay.log: Logging to
> org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via
> org.mortbay.log.Slf4jLog
> 2011-06-17 19:59:46,870 INFO org.apache.hadoop.http.HttpServer: Port
> returned by webServer.getConnectors()[0].getLocalPort() before open() is -1.
> Opening the listener on 50075
> 2011-06-17 19:59:46,871 INFO org.apache.hadoop.http.HttpServer:
> listener.getLocalPort() returned 50075
> webServer.getConnectors()[0].getLocalPort() returned 50075
> 2011-06-17 19:59:46,871 INFO org.apache.hadoop.http.HttpServer: Jetty bound
> to port 50075
> 2011-06-17 19:59:46,875 INFO org.mortbay.log: jetty-6.1.14
> 2011-06-17 20:01:45,702 INFO org.mortbay.log: Started
> SelectChannelConnector@0.0.0.0:50075
> 2011-06-17 20:01:45,709 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> Initializing JVM Metrics with processName=DataNode, sessionId=null
> 2011-06-17 20:01:45,743 INFO org.apache.hadoop.ipc.metrics.RpcMetrics:
> Initializing RPC Metrics with hostName=DataNode, port=50020
> 2011-06-17 20:01:45,751 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: dnRegistration =
> DatanodeRegistration(localhost.localdomain:50010,
> storageID=DS-993704729-127.0.0.1-50010-1308296320968, infoPort=50075,
> ipcPort=50020)
> 2011-06-17 20:01:45,751 INFO org.apache.hadoop.ipc.Server: IPC Server
> listener on 50020: starting
> 2011-06-17 20:01:45,753 INFO org.apache.hadoop.ipc.Server: IPC Server
> Responder: starting
> 2011-06-17 20:01:45,754 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 2 on 50020: starting
> 2011-06-17 20:01:45,754 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 0 on 50020: starting
> 2011-06-17 20:01:45,754 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 1 on 50020: starting
> 2011-06-17 20:01:45,795 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration(
> 127.0.0.1:50010, storageID=DS-993704729-127.0.0.1-50010-1308296320968,
> infoPort=50075, ipcPort=50020)In DataNode.run, data =
> FSDataset{dirpath='/tmp/hadoop-appuser/dfs/data/current'}
> 2011-06-17 20:01:45,799 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: using BLOCKREPORT_INTERVAL
> of 3600000msec Initial delay: 0msec
> 2011-06-17 20:01:45,828 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 0 blocks got
> processed in 11 msecs
> 2011-06-17 20:01:45,833 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Starting Periodic block
> scanner.
> 2011-06-17 20:56:02,945 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 0 blocks got
> processed in 1 msecs
> 2011-06-17 21:56:02,248 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 0 blocks got
> processed in 1 msecs
>
>
> On Fri, Jun 17, 2011 at 9:42 PM, Marcos Ortiz < <mlortiz@uci.cu>
> mlortiz@uci.cu> wrote:
>
>> **
>> On 06/17/2011 07:41 AM, Lemon Cheng wrote:
>>
>> Hi,
>>
>>  I am using the hadoop-0.20.2. After calling ./start-all.sh, i can type
>> "hadoop dfs -ls".
>> However, when i type "hadoop dfs -cat /usr/lemon/wordcount/input/file01",
>> the error is shown as follow.
>> I have searched the related problem in the web, but i can't find a
>> solution for helping me to solve this problem.
>> Anyone can give suggestion?
>> Many Thanks.
>>
>>
>>
>>  11/06/17 19:27:12 INFO hdfs.DFSClient: No node available for block:
>> blk_7095683278339921538_1029 file=/usr/lemon/wordcount/input/file01
>> 11/06/17 19:27:12 INFO hdfs.DFSClient: Could not obtain block
>> blk_7095683278339921538_1029 from any node:  java.io.IOException: No live
>> nodes contain current block
>> 11/06/17 19:27:15 INFO hdfs.DFSClient: No node available for block:
>> blk_7095683278339921538_1029 file=/usr/lemon/wordcount/input/file01
>> 11/06/17 19:27:15 INFO hdfs.DFSClient: Could not obtain block
>> blk_7095683278339921538_1029 from any node:  java.io.IOException: No live
>> nodes contain current block
>> 11/06/17 19:27:18 INFO hdfs.DFSClient: No node available for block:
>> blk_7095683278339921538_1029 file=/usr/lemon/wordcount/input/file01
>> 11/06/17 19:27:18 INFO hdfs.DFSClient: Could not obtain block
>> blk_7095683278339921538_1029 from any node:  java.io.IOException: No live
>> nodes contain current block
>> 11/06/17 19:27:21 WARN hdfs.DFSClient: DFS Read: java.io.IOException:
>> Could not obtain block: blk_7095683278339921538_1029
>> file=/usr/lemon/wordcount/input/file01
>>         at
>> org.apache.hadoop.hdfs.DFSClient$DFSInputStream.chooseDataNode(DFSClient.java:1812)
>>         at
>> org.apache.hadoop.hdfs.DFSClient$DFSInputStream.blockSeekTo(DFSClient.java:1638)
>>         at
>> org.apache.hadoop.hdfs.DFSClient$DFSInputStream.read(DFSClient.java:1767)
>>         at java.io.DataInputStream.read(DataInputStream.java:83)
>>         at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:47)
>>         at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:85)
>>         at org.apache.hadoop.fs.FsShell.printToStdout(FsShell.java:114)
>>         at org.apache.hadoop.fs.FsShell.access$100(FsShell.java:49)
>>         at org.apache.hadoop.fs.FsShell$1.process(FsShell.java:352)
>>         at
>> org.apache.hadoop.fs.FsShell$DelayedExceptionThrowing.globAndProcess(FsShell.java:1898)
>>         at org.apache.hadoop.fs.FsShell.cat<http://org.apache.hadoop.fs.fsshell.cat/>
>> (FsShell.java:346)
>>         at org.apache.hadoop.fs.FsShell.doall(FsShell.java:1543)
>>         at org.apache.hadoop.fs.FsShell.run(FsShell.java:1761)
>>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>>         at org.apache.hadoop.fs.FsShell.main(FsShell.java:1880)
>>
>>
>>  Regards,
>> Lemon
>>
>> Are you sure that all your DataNodes are online?
>>
>>
>> --
>> Marcos Luís Ortíz Valmaseda
>>  Software Engineer (UCI)
>>   <http://marcosluis2186.posterous.com>http://marcosluis2186.posterous.com
>>   <http://twitter.com/marcosluis2186>http://twitter.com/marcosluis2186
>>
>>
>

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