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RE: risks of using Hadoop - Hadoop - [mail # user]
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...Risks? Well if you come to Hadoop World in Nov, we actually have a presentation that might help reduce some of your initial risks. There are always risks when starting a ne...
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Author: Michael Segel,
2011-09-16, 21:05
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RE: Hadoop multi tier backup - Hadoop - [mail # user]
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...Matthew, the short answer is hire a consultant to work with you on your D R/BCP strategy. :-) Short of that... you have a couple of things... Your back-up cluster, is it in the s...
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Author: Michael Segel,
2011-08-30, 20:13
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Chicago Hadoop User Group's Aug 31st Meetup will be broadcast via LiveMeeting. - Hadoop - [mail # user]
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...Ok, this is a first, but we're to see if we can do a simulcast by broad casting the meeting live over LiveMeeting. This month's meeting: A tale of two derivatives features Ted Dunning ...
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Author: Michael Segel,
2011-08-30, 02:55
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RE: Hadoop--store a sequence file in distributed cache? - Hadoop - [mail # user]
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...Sofia, I was about to say that if your file is already on hdfs, you should just be able to open it. But as I type this, I have this thing kicking me in the back of the head...
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Author: Michael Segel,
2011-08-13, 17:36
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RE: Speed up node under replicated block during decomission - Hadoop - [mail # user]
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...Just a thought... Really quick and dirty thing to do is to turn off the node. Within 10 minutes the node looks down to the JT and NN so it gets marked as down. Run an fsck ...
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Author: Michael Segel,
2011-08-12, 17:51
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RE: Derby with Hadoop --Why? - Hadoop - [mail # general]
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...Derby? First a little history... Derby started out long ago as Cloudscape. Cloudscape was bought by Informix . Informix was bought by IBM. IBM didn't understand Cloudscape and decided ...
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Author: Michael Segel,
2011-08-09, 12:22
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RE: Hadoop cluster network requirement - Hadoop - [mail # user]
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...Yeah what he said. Its never a good idea. Forget about losing a NN or a Rack, but just losing connectivity between data centers. (It happens more than you think.) Your entire cluster i...
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Author: Michael Segel,
2011-08-01, 23:57
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RE: Moving Files to Distributed Cache in MapReduce - Hadoop - [mail # user]
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...Yeah, I'll write something up and post it on my web site. Definitely not InfoQ st uff, but a simple tip and tricks stuff. -Mike the FAQ page. Any volunteers? (...
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Author: Michael Segel,
2011-08-01, 12:24
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RE: Moving Files to Distributed Cache in MapReduce - Hadoop - [mail # user]
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...Here's the meat of my post earlier... Sample code on putting a file on the cache: DistributedCache.addCacheFile(new URI(path+"MyFileName",conf)); Sample code in pulling data off the ca...
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Author: Michael Segel,
2011-07-30, 02:49
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RE: Moving Files to Distributed Cache in MapReduce - Hadoop - [mail # user]
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...I could have sworn that I gave an example earlier this week on how to push and pull stuff from distributed cache. com>wrote: wrote: e ail.com edu> thin te vis.edu>...
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Author: Michael Segel,
2011-07-30, 02:43
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