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Re: Mapper always hangs at the same spot - MapReduce - [mail # user]
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...Your application logic is likely stuck in a loop. On Sat, Apr 13, 2013 at 12:47 PM, Chris Hokamp wrote: ...
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Author: Edward Capriolo,
2013-04-13, 20:08
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Re: How to make a MapReduce job with no input? - MapReduce - [mail # user]
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...I made a https://github.com/edwardcapriolo/DualInputFormat for hive. Always returns 1 split with 1 run. You can write the same type of thing to create N splits. On Thu, Feb 28, 2013 at...
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Author: Edward Capriolo,
2013-03-01, 01:46
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Re: What is the preferred way to pass a small number of configuration parameters to a mapper or reducer - MapReduce - [mail # user]
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...Z. Implement passing simple small objects in the most complicated manner possible try JPOX, ontop of hbase, configured by smartfrog and puppet with environments, on heroku. On Mon, Dec...
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Author: Edward Capriolo,
2012-12-31, 16:03
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Re: What should I do with a 48-node cluster - MapReduce - [mail # user]
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...You do not absolutely need more ram. You do not know your workload yet. A standard hadoop machine has 8 disks 16 GB RAM, 8 cores. In the old days, you would dedicate map slots an...
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Author: Edward Capriolo,
2012-12-23, 01:11
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Re: What should I do with a 48-node cluster - MapReduce - [mail # user]
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...Three year old blade center is ok. A three year old blade is probably a 64 bit machine. 2 to 4 gb RAM 2 SCSI disks. Maybe two socket two core. Two blade centers is about 8u or a quarter cabi...
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Author: Edward Capriolo,
2012-12-21, 23:50
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[HADOOP-6812] fs.inmemory.size.mb not listed in conf. Cluster setup page gives wrong advice. - MapReduce - [issue]
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...http://hadoop.apache.org/common/docs/current/cluster_setup.htmlfs.inmemory.size.mb does not appear in any xml filegrep "fs.inmemory.size.mb" ./mapred/mapred-default.xml [edward@ec src]$ grep...
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http://issues.apache.org/jira/browse/HADOOP-6812
Author: Edward Capriolo,
2011-12-12, 06:19
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