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From Eric Newton <eric.new...@gmail.com>
Subject Re: Newbie Install/Setup Questions
Date Tue, 10 Apr 2012 20:41:03 GMT
Note that all the servers in accumulo need to be able to read
accumulo-site.xml, and it needs to be the same everywhere.  This feature
prevents a rogue server from joining the group.

-Eric

On Tue, Apr 10, 2012 at 4:00 PM, Adam Fuchs <adam.p.fuchs@ugov.gov> wrote:

> Sam,
>
> Yes, Accumulo 1.4.0 should be compatible with Hadoop 1.0.1 after you
> remove that check. We've run with it some, but mostly we've tested with
> 0.20.x. Please let us know if you see any compatibility problems.
>
> There are two possibilities for why your second tablet server did not
> start. Either the start-all.sh script did not try to start the other server
> because your conf/slaves file doesn't reference the other server, or the
> other server has a configuration problem that prevented it from starting.
> Does your conf/slaves file contain both machine names of your tablet
> servers, and does the start-all.sh script print out something like
> "starting tablet server on ..." for both servers? If it does, then check to
> see that the configuration is identical on both servers.
>
> Cheers,
> Adam
>
>
> On Tue, Apr 10, 2012 at 3:41 PM, Patel, Sameer <sameer.patel@lmco.com>wrote:
>
>> Hello,
>>
>> I'm a total newbie to Accumulo and am trying to setup version 1.4.0(I'm
>> assuming this is the latest release) on XUbuntu 11.10.   I'm running on top
>> of Apache Hadoop 1.0.1.  I'm having some setup problems and was wondering
>> if someone might have some insight?
>>
>> Hadoop Setup Environment
>> -----------------------
>> I'm running in a multi node setup where I have the Job Tracker, Name
>> Node, Secondary Name Node, Zookeeper, and 2 slaves all on separate machines
>> (virtual machines).  I have verified that the Hadoop install seems ok and
>> even performed a distributed file action to test the file system (e.g. made
>> a directory).  Additionally, I see the 2 "Live Nodes"(2 slave nodes) show
>> up on the Hadoop status page at http:<machine>:50070.
>>
>> Accumulo Setup Environment
>> --------------------------
>> I have the Accumulo Master/Table Server deployed on one of the Hadoop
>> slaves. I also have Accumulo installed on the other Hadoop slave to serve
>> as another Accumulo Tablet Server.  So theoretically, I'm expecting one
>> Accumulo master and two Accumulo tablet servers (played by my 2 Hadoop
>> slave nodes).
>>
>> Question 1
>> ----------
>> When I initially tried to start accumulo with the "start-all.sh" script,
>> it did not start and printed: "Accumulo 1.4.0 requires Hadoop version
>> 0.20.x".  Is this accurate?  Is it really 0.20.x (which is listed as the
>> "legacy" version on the Apache Hadoop site)?  I probably missed this
>> requirement somewhere in the documentation but I still can't find this
>> spelled out.
>>
>> Question 2
>> ----------
>> Temporarily, I commented out the check for the particular Hadoop version
>> relating to Question 1 to get Accumulo started (in "config.sh").  Once I
>> did that I was able to go to the Accumulo Status page and see the following
>> information as listed below.  Everything looks good except the Tablet
>> Servers number.  Should I be seeing 2 there (instead of 1)?  I have the 2
>> slave nodes listed in my "slaves" conf file.  Interestingly it detects 2
>> Data Nodes..and when I click on the link in the UI for "Live Data Nodes" it
>> shows my 2 machines listed.
>>
>> Accumulo Master
>> ----------------
>> Tables 2
>> Tablet Servers 1
>> Tablets 4
>>
>> NameNode
>> ---------
>> Live Data Nodes 2
>>
>> JobTracker
>> ----------
>> Trackers 2
>>
>> ZooKeeper
>> ---------
>> <Myzookeeper server>:2181
>>
>> Appreciate any help!
>>
>> Thanks,
>> Sam
>>
>>
>>
>>
>

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