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From Lin Chia-Hung <cli...@googlemail.com>
Subject Re: hama system dir
Date Mon, 01 Nov 2010 04:33:15 GMT
I add the bsp.system.dir property to hama-site.xml, but the error
message remains there; directly mkdir /tmp/hadoop-<user>/bsp/system in
file system doesn't help either.

The version of hama and hadoop (hdfs and common) I am using is trunk;
zookeeper 3.3.1.

Previously I tried using hadoop 0.20.x (as instruction in getting
started - http://wiki.apache.org/hama/GettingStarted), but I notice in
that version I can not execute fs command e.g. `hadoop fs -ls /' There
is a hdfs property change which requires a patch; therefore I switch
to use trunk (patch has been added and I can add my changes as well).

Is there any restriction for hama to use hadoop version?

Or any other places that I can check regarding to this problem?

Thanks for help.

2010/10/30 Filipe David Manana <fdmanana@apache.org>:
> Which version of Hama are you using?
>
> For the latest, make sure your XML config has the following:
>
>  <property>
>    <name>bsp.system.dir</name>
>    <value>${hadoop.tmp.dir}/bsp/system</value>
>    <description>The shared directory where BSP stores control files.
>    </description>
>  </property>
>
> Let us know if it fixes the issue for you.
>
> regards
>
> On Sat, Oct 30, 2010 at 9:24 AM, Lin Chia-Hung <clin4j@googlemail.com> wrote:
>> I follow the getting started page at
>> http://wiki.apache.org/hama/GettingStarted#Setting_up_Hama setting up
>> the hama system, but I keep getting the following error (saying the
>> system dir is null.)
>>
>> After checking the /tmp/hadoop-${user}/bsp/, seems like there is no
>> system dir as BSPMaster contains code that would throws ioexception if
>> no system dir; but even adding system folder (e.g. touch
>> /tmp/hadoop-${user}/bsp/system) it still throws this error.
>>
>> How can I solve this problem?
>>
>> 2010-10-30 16:16:59,585 INFO org.apache.hama.bsp.BSPMaster: problem
>> cleaning system directory: null
>> java.io.IOException: Call to lab01/140.127.220.29:9000 failed on local
>> exception: java.io.EOFException
>>        at org.apache.hadoop.ipc.Client.wrapException(Client.java:774)
>>        at org.apache.hadoop.ipc.Client.call(Client.java:742)
>>        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
>>        at $Proxy4.getProtocolVersion(Unknown Source)
>>        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359)
>>        at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:105)
>>        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:208)
>>        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:169)
>>        at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82)
>>        at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1373)
>>        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
>>        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1385)
>>        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:191)
>>        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
>>        at org.apache.hama.bsp.BSPMaster.<init>(BSPMaster.java:131)
>>        at org.apache.hama.bsp.BSPMaster.startTracker(BSPMaster.java:237)
>>        at org.apache.hama.bsp.BSPMaster.startMaster(BSPMaster.java:230)
>>        at org.apache.hama.BSPMasterRunner.run(BSPMasterRunner.java:43)
>>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>>        at org.apache.hama.BSPMasterRunner.main(BSPMasterRunner.java:53)
>> Caused by: java.io.EOFException
>>        at java.io.DataInputStream.readInt(DataInputStream.java:375)
>>        at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501)
>>        at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446)
>>
>
>
>
> --
> Filipe David Manana,
> fdmanana@gmail.com, fdmanana@apache.org
>
> "Reasonable men adapt themselves to the world.
>  Unreasonable men adapt the world to themselves.
>  That's why all progress depends on unreasonable men."
>

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