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Re: Backing up HDFS - Hadoop - [mail # user]
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...On Tue, Aug 3, 2010 at 11:46 AM, Michael Segel wrote: Right. it all depends on what you want and your needs. In my example I wanted near line backups for a lot of data that I ca...
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Author: Edward Capriolo,
2010-08-03, 16:07
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Re: Backing up HDFS - Hadoop - [mail # user]
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...On Tue, Aug 3, 2010 at 10:42 AM, Brian Bockelman wro te: f a ady l n e Since HDFS filesystems are usually very large backing them up is a challenge in itself. This is actually a ...
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Author: Edward Capriolo,
2010-08-03, 15:02
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Re: Combiner function - Hadoop - [mail # user]
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...On Mon, Aug 2, 2010 at 4:28 PM, Jackob Carlsson wrote: gle dding a No. That is the exact opposite goal of the combiner. It runs locally. It only runs when certain thresholds in t...
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Author: Edward Capriolo,
2010-08-02, 20:34
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Re: Set variables in mapper - Hadoop - [mail # user]
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...On Mon, Aug 2, 2010 at 12:17 PM, Erik Test wrote: om his put, You can pass variables to the Job using the JobConf class. In your Driver class: jobConf.set("clone_path", clo...
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Author: Edward Capriolo,
2010-08-02, 16:23
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Re: mapred.userlog.retain.hours - Hadoop - [mail # user]
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...On Thu, Jul 29, 2010 at 1:30 PM, vishalsant wro te: ude .hours-tp29298881p29298881.html This parameter effects JobTrackers and TaskTrackers so you also restart the wrong hadoop c...
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Author: Edward Capriolo,
2010-07-29, 21:05
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Re: Is it safe to set default/minimum replication to 2? - Hadoop - [mail # user]
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...On Wed, Jul 21, 2010 at 11:45 PM, Brian Bockelman wr ote: space. e for the LHC, so a large part of our data is stored on tape elsewhere (but not everything!). It's an operationa...
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Author: Edward Capriolo,
2010-07-22, 04:28
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Re: Most Common ways to load data into Hadoop in production systems - Hadoop - [mail # user]
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...On Wed, Jul 21, 2010 at 12:42 PM, Xavier Stevens wro te: ut use n ould Hadoop Mailing list presents... An ASF film... from the producer of 'dfs -copyFromLocal'... How...
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Author: Edward Capriolo,
2010-07-21, 16:55
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Alternatives to start-all.sh stop-all.sh func - Hadoop - [mail # user]
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...I remember when I was first setting up a hadoop cluster wondering exactly what the SSH-KEYs did and why and if they were needed. start-all.sh and stop-all.sh are good for what they do but th...
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Author: Edward Capriolo,
2010-07-16, 16:36
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Re: Setting different hadoop-env.sh for DataNode, TaskTracker - Hadoop - [mail # user]
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...On Tue, Jul 13, 2010 at 10:46 AM, Matt Pouttu-Clarke wrote: de ry? ay contain confidential and privileged information of iCrossing. Any unauth orized review, use, disclosure or distrib...
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Author: Edward Capriolo,
2010-07-13, 15:27
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HDFS moves and MapReduce jobs - Hadoop - [mail # user]
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...This is a question I should go and test out myself but was wondering if anyone has a quick answer. We have map/reduce jobs that produce lots of smaller files to a folder. We also have ...
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Author: Edward Capriolo,
2010-07-09, 21:43
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