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From Adam Kawa <kawa.a...@gmail.com>
Subject Re: Hadoop 2.2.0 from source configuration
Date Tue, 03 Dec 2013 18:55:40 GMT
Daniel,

I see that in previous hdfs report, you had: hosta.subdom1.tld1, but now
you have feynman.cids.ca. What is the content of your /etc/hosts file, and
output of $hostname command?




2013/12/3 Daniel Savard <daniel.savard@gmail.com>

> I did that more than once, I just retry it from the beginning. I zapped
> the directories and recreated them with hdfs namenode -format and restarted
> HDFS and I am still getting the very same error.
>
> I have posted previously the report. Is there anything in this report that
> indicates I am not having enough free space somewhere? That's the only
> thing I can see may cause this problem after everything I read on the
> subject. I am new to Hadoop and I just want to setup a standalone node for
> starting to experiment a while with it before going ahead with a complete
> cluster.
>
> I repost the report for convenience:
>
> Configured Capacity: 2939899904 (2.74 GB)
> Present Capacity: 534421504 (509.66 MB)
> DFS Remaining: 534417408 (509.66 MB)
>
> DFS Used: 4096 (4 KB)
> DFS Used%: 0.00%
> Under replicated blocks: 0
> Blocks with corrupt replicas: 0
> Missing blocks: 0
>
> -------------------------------------------------
> Datanodes available: 1 (1 total, 0 dead)
>
> Live datanodes:
> Name: 127.0.0.1:50010 (feynman.cids.ca)
> Hostname: feynman.cids.ca
> Decommission Status : Normal
> Configured Capacity: 2939899904 (2.74 GB)
>
> DFS Used: 4096 (4 KB)
> Non DFS Used: 2405478400 (2.24 GB)
> DFS Remaining: 534417408 (509.66 MB)
> DFS Used%: 0.00%
> DFS Remaining%: 18.18%
> Last contact: Tue Dec 03 13:37:02 EST 2013
>
>
> -----------------
> Daniel Savard
>
>
> 2013/12/3 Adam Kawa <kawa.adam@gmail.com>
>
>> Daniel,
>>
>> It looks that you can only communicate with NameNode to do
>> "metadata-only" operations (e.g. listing, creating a dir, empty file)...
>>
>> Did you format the NameNode correctly?
>> A quite similar issue is described here:
>> http://www.manning-sandbox.com/thread.jspa?messageID=126741. The last
>> reply says: "The most common is that you have reformatted the namenode
>> leaving it in an inconsistent state. The most common solution is to stop
>> dfs, remove the contents of the dfs directories on all the machines, run
>> “hadoop namenode -format” on the controller, then restart dfs. That
>> consistently fixes the problem for me. This may be serious overkill but it
>> works."
>>
>>
>> 2013/12/3 Daniel Savard <daniel.savard@gmail.com>
>>
>>> Thanks Arun,
>>>
>>> I already read and did everything recommended at the referred URL. There
>>> isn't any error message in the logfiles. The only error message appears
>>> when I try to put a non-zero file on the HDFS as posted above. Beside that,
>>> absolutely nothing in the logs is telling me something is wrong with the
>>> configuration so far.
>>>
>>> Is there some sort of diagnostic tool that can query/ping each server to
>>> make sure it responds properly to requests? When trying to put my file, in
>>> the datanode log I see nothing, the message appears in the namenode log. Is
>>> this the expected behavior or should I see at least some kind of request
>>> message in the datanode logfile?
>>>
>>>
>>> -----------------
>>> Daniel Savard
>>>
>>>
>>> 2013/12/2 Arun C Murthy <acm@hortonworks.com>
>>>
>>>> Daniel,
>>>>
>>>>  Apologies if you had a bad experience. If you can point them out to
>>>> us, we'd be more than happy to fix it - alternately, we'd *love* it if you
>>>> could help us improve docs too.
>>>>
>>>>  Now, for the problem at hand:
>>>> http://wiki.apache.org/hadoop/CouldOnlyBeReplicatedTo is one place to
>>>> look. Basically NN cannot find any datanodes. Anything in your NN logs to
>>>> indicate trouble?
>>>>
>>>>  Also, pls feel free to open liras with issues you find and we'll help.
>>>>
>>>> thanks,
>>>> Arun
>>>>
>>>> On Dec 2, 2013, at 8:44 AM, Daniel Savard <daniel.savard@gmail.com>
>>>> wrote:
>>>>
>>>> André,
>>>>
>>>> good for you that greedy instructions on the reference page were enough
>>>> to setup your cluster. However, read them again and see how many
>>>> assumptions are made into them about what you are supposed to already know
>>>> and should come without saying more about it.
>>>>
>>>> I did try the single node setup, it is worst than the cluster setup
>>>> regarding the instructions. You are supposed to already have a near working
>>>> system as far as I understand the instructions. It is assumed the HDFS is
>>>> already setup and working properly. Try to find the instructions to setup
>>>> HDFS for version 2.2.0 and you will end up with a lot of inappropriate
>>>> instructions about previous version (some properties were renamed).
>>>>
>>>> It may appear hard at people to say this is toxic, but it is. The first
>>>> place a newcomer will go is setup a single node. This will be his starting
>>>> point and he will be left with a bunch of a priori and no clue.
>>>>
>>>> To go back to my very problem at this point:
>>>>
>>>> 13/12/02 11:34:07 WARN hdfs.DFSClient: DataStreamer Exception
>>>> org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
>>>> /test._COPYING_ could only be replicated to 0 nodes instead of
>>>> minReplication (=1).  There are 1 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$1.run(Server.java:2044)
>>>>     at java.security.AccessController.doPrivileged(Native Method)
>>>>     at javax.security.auth.Subject.doAs(Subject.java:415)
>>>>     at
>>>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
>>>>     at org.apache.hadoop.ipc.Server$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:57)
>>>>     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: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)
>>>>
>>>> I can copy an empty file, but as soon as its content is non-zero I am
>>>> getting this message. Searching on the message is of no help so far.
>>>>
>>>> And I skimmed through the cluster instructions and found nothing there
>>>> that could help in any way neither.
>>>>
>>>>
>>>> -----------------
>>>> Daniel Savard
>>>>
>>>>
>>>> 2013/12/2 Andre Kelpe <akelpe@concurrentinc.com>
>>>>
>>>>> Hi Daniel,
>>>>>
>>>>> first of all, before posting to a mailing list, take a deep breath and
>>>>> let your frustrations out. Then write the email. Using words like
>>>>> "crappy", "toxicware", "nightmare" are not going to help you getting
>>>>> useful responses.
>>>>>
>>>>> While I agree that the docs can be confusing, we should try to stay
>>>>> constructive. You haven't  mentioned which documentation you are
>>>>> using. I found the cluster tutorial sufficient to get me started:
>>>>>
>>>>> http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/ClusterSetup.html
>>>>>
>>>>> If you are looking for an easy way to spin up a small cluster with
>>>>> hadoop 2.2, try the hadoop2 branch of this vagrant setup:
>>>>>
>>>>> https://github.com/fs111/vagrant-hadoop-cluster/tree/hadoop2
>>>>>
>>>>> - André
>>>>>
>>>>> On Mon, Dec 2, 2013 at 5:34 AM, Daniel Savard <daniel.savard@gmail.com>
>>>>> wrote:
>>>>> > I am trying to configure hadoop 2.2.0 from source code and I found
>>>>> the
>>>>> > instructions really crappy and incomplete. It is like they were
>>>>> written to
>>>>> > avoid someone can do the job himself and must contract someone else
>>>>> to do it
>>>>> > or buy a packaged version.
>>>>> >
>>>>> > It is about three days I am struggling with this stuff with partial
>>>>> success.
>>>>> > The documentation is less than clear and most of the stuff out there
>>>>> apply
>>>>> > to earlier version and they haven't been updated for version 2.2.0.
>>>>> >
>>>>> > I was able to setup HDFS, however I am still unable to use it. I
am
>>>>> doing a
>>>>> > single node installation and the instruction page doesn't explain
>>>>> anything
>>>>> > beside telling you to do this and that without documenting what
each
>>>>> thing
>>>>> > is doing and what choices are available and what guidelines you
>>>>> should
>>>>> > follow. There is even environment variables you are told to set,
but
>>>>> nothing
>>>>> > is said about what they mean and to which value they should be set.
>>>>> It seems
>>>>> > it assumes prior knowledge of everything about hadoop.
>>>>> >
>>>>> > Anyone knows a site with proper documentation about hadoop or it's
>>>>> hopeless
>>>>> > and this whole thing is just a piece of toxicware?
>>>>> >
>>>>> > I am already looking for alternate solutions to hadoop which for
>>>>> sure will
>>>>> > be a nightmare to manage and install each time a new version,
>>>>> release will
>>>>> > become available.
>>>>> >
>>>>> > TIA
>>>>> > -----------------
>>>>> > Daniel Savard
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> André Kelpe
>>>>> andre@concurrentinc.com
>>>>> http://concurrentinc.com
>>>>>
>>>>
>>>>
>>>>  --
>>>> Arun C. Murthy
>>>> Hortonworks Inc.
>>>> http://hortonworks.com/
>>>>
>>>>
>>>>
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>>
>

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