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Accumulo >> mail # user >> Accumulo Configuration Question


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Parker, Matthew - IS 2013-01-31, 15:19
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William Slacum 2013-01-31, 15:52
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RE: Accumulo Configuration Question
I'm sort of flying blind. The cluster is on a headless environment, and I can only access the system via putty at the command prompt. I've had to resort to using lynx to browse the monitor page. Unfortunately, the graphs don't translate well when using a text-based browser. Is there another way to get that info through the logs?

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From: William Slacum [[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2013 10:52 AM
To: [EMAIL PROTECTED]
Subject: Re: Accumulo Configuration Question

This doesn't have much to do with your cluster set up, but what does the monitor say as your jobs are nearing completion and things start failing? Are there hold times for the table(s) you are writing to?

On Thu, Jan 31, 2013 at 10:19 AM, Parker, Matthew - IS <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
TWIMC:

I'm new to Accumulo and I've been trying to come up with a good architecture for a 20 node cluster. I have been running a map/reduce program, and it encounters issues when it comes to running the Accumulo section of the code. Once the job's completion rate exceeds 93, it starts dropping 10's of tasks during the process, because they eventually timeout. The completion rate drops back down, but it the job eventually finishes. I have a suspicion it's due to the way I have the system configured and I wanted to get some feedback as to what's the generally preferred architecture when installing Accumulo?

Since you have the choice of installing hdfs, map/reduce, and tablet servers on any three, the general guideline is to install two per machine (data node and table server, or data node and map/reduce) as per the Hardware section in the Administration documentation.

http://accumulo.apache.org/1.4/user_manual/Administration.html#Hardware

Does that mean you have one large group of data nodes that's installed on the majority of the cluster, or are they somehow split into two groups such that map/reduce & hdfs runs on one set of nodes, and Accumulo tablet servers and hdfs uses another?

I was wondering whether people would comment on what a working configuration might look like?

TIA,

Matt

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Jason Morris 2013-01-31, 16:44
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Parker, Matthew - IS 2013-01-31, 16:49
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Aaron Cordova 2013-01-31, 15:57
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Parker, Matthew - IS 2013-01-31, 16:47