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Re: I am trying to run a large job and it is consistently failing with timeout - nothing happens for 600 sec - Hadoop - [mail # user]
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...Timeout errors don't usually occur outside of the Mapper.map() 'phase'. When we've seen this error it has to deal w M/R going against HBase.... Since the OP sees the error when h...
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Author: Michel Segel,
2012-01-19, 12:08
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New InfoQ article on HBase and Lucene - Hadoop - [mail # dev]
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...Hi, Just FYI... Boris Lublinsky released a new article that starts to talk about a PoC we did earlier in the year. Without spoiling the article, the reason I wanted to poin...
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Author: Michel Segel,
2011-12-30, 18:19
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Re: More cores Vs More Nodes ? - Hadoop - [mail # user]
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...Brad you said 64 core allocations. So how many cores are lost due to the overhead of virtualization? Isn't it 1 core per VM? So you end up losing 8 cores when you create 8 vms... Right? &nbs...
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Author: Michel Segel,
2011-12-17, 14:57
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Re: Dynamically adding nodes in Hadoop - Hadoop - [mail # user]
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...Actually I would recommend avoiding /etc/hosts and using DNS if this is goin g to be a production grade cluster... Sent from a remote device. Please excuse any typos... Mike Sege...
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Author: Michel Segel,
2011-12-17, 14:40
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Re: Hadoop and hardware - Hadoop - [mail # user]
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...Uhm... If I may add something... Joep is correct. There are a lot of factors that will effect your cluster de sign. And there have been a lot of threads on this topic because hardware ...
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Author: Michel Segel,
2011-12-17, 11:30
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Re: Routing and region deletes - Hadoop - [mail # user]
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...Per Seffensen, I would urge you to step away from the keyboard and rethink your design. It sounds like you want to replicate a date partition model similar to what y ou would do if you...
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Author: Michel Segel,
2011-12-08, 13:51
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Re: Issue with DistributedCache - Hadoop - [mail # user]
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...Denis... Sorry, you lost me. Just to make sure we're using the same terminology... The cluster is comprised of two types of nodes... The data nodes which run DN,TT, and if you ha...
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Author: Michel Segel,
2011-11-24, 13:39
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Re: MapReduce Examples - Hadoop - [mail # user]
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...I think that there are... Since you work in databases, have you looked at HB ase? The reason the word count example is nice is that anyone can get a bunch of w ord / text documents freely fr...
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Author: Michel Segel,
2011-11-24, 13:25
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Re: Issue with DistributedCache - Hadoop - [mail # user]
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...Silly question... Why do you need to use the distributed cache for the word c ount program? What are you trying to accomplish? I've only had to play with it for one project where...
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Author: Michel Segel,
2011-11-24, 13:13
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Re: Matrix multiplication in Hadoop - Hadoop - [mail # user]
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...You really don't need to wait... If you're going to go down this path you can use a jni wrapper to do the c/c ++ code for the gpu... You can do that now... If you want to go beyo...
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Author: Michel Segel,
2011-11-19, 17:33
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