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Message-ID: <46266211.9080504@criticalsoftware.com>
Date: Wed, 18 Apr 2007 19:23:13 +0100
From: Pedro Guedes <ps-guedes@criticalsoftware.com>
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To: hadoop-user@lucene.apache.org
Subject: Re: Serializing code to nodes: no can do?
References: <4625F230.7030707@criticalsoftware.com>
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I keep talking to myself... hope it doesn't annoy u too much!

We thought of a solution to our problem in wich we build a new .job
file, in accordance with our crawl configuration, and then pass it to
hadoop for execution... Is there somewhere i can look for the
specification of the .job format?

Thanks again,

Pedro

I wrote:
> Hi hadoopers,
>
> I'm working on an enterprise search engine that works on an hadoop
> cluster but is controlled form the outside. I managed to implement a
> simple crawler much like Nutch's...
> Now i have a new system's requirement: the crawl process must be
> configurable outside hadoop. This means that I should be able to add
> steps to the crawling process that the cluster would execute without 
> knowing before hand what they are... since serialization if not
> possible, is there another way to achieve the same effect?
>
> Using Writable means I need implementations to be on each node so they
> can read the object data from HDFS... but then i just get the same
> object and not a new implementation, right?
>
> Any thoughts will be appreciated,
>
> Pedro
>
>   

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