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Re: formatting hdfs without user interaction - Hadoop - [mail # user]
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...On Fri, Sep 23, 2011 at 11:52 AM, wrote: You might want to try expect scripting. You open a stream to the process and then can wait for prompts and print replies. expect also has...
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Author: Edward Capriolo,
2011-09-23, 16:01
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Re: Hadoop doesnt use Replication Level of Namenode - Hadoop - [mail # user]
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...On Tue, Sep 13, 2011 at 5:53 AM, Steve Loughran wrote: Another technique is that if you are using a single replication factor on all files you can mark the property as true in th...
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Author: Edward Capriolo,
2011-09-13, 14:56
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Re: do HDFS files starting with _ (underscore) have special properties? - Hadoop - [mail # user]
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...On Fri, Sep 2, 2011 at 4:04 PM, Meng Mao wrote: Files starting with '_' are considered 'hidden' like unix files starting with '.'. I did not know that for a very long time becau...
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Author: Edward Capriolo,
2011-09-02, 21:20
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Re: Help - Rack Topology Script - Hadoop 0.20 (CDH3u1) - Hadoop - [mail # user]
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...On Sun, Aug 21, 2011 at 10:22 AM, Joey Echeverria wrote: If you run the hdfs balancer application the application displays the topology it learns from from the topology script. ...
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Author: Edward Capriolo,
2011-08-21, 23:13
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Re: Why hadoop should be built on JAVA? - Hadoop - [mail # user]
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...This should explain it http://jz10.java.no/java-4-ever-trailer.html . On Tue, Aug 16, 2011 at 1:17 PM, Adi wrote: ...
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Author: Edward Capriolo,
2011-08-17, 01:41
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Re: YCSB Benchmarking for HBase - Hadoop - [mail # user]
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...On Wed, Aug 3, 2011 at 6:10 AM, praveenesh kumar wrote: I just did http://www.edwardcapriolo.com/roller/edwardcapriolo/entry/ycsb_cassandra_0_7_6. For hbase I followed the...
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Author: Edward Capriolo,
2011-08-03, 21:32
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Re: One file per mapper - Hadoop - [mail # user]
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...On Tue, Jul 5, 2011 at 5:28 PM, Jim Falgout wrote: You can also do this with MultipleInputs and MultipleOutputs classes. Each source file can have a different mapper....
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Author: Edward Capriolo,
2011-07-06, 14:46
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Re: Jobs are still in running state after executing "hadoop job -kill jobId" - Hadoop - [mail # user]
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...On Tue, Jul 5, 2011 at 11:45 AM, Juwei Shi wrote: I do not think they pop up very often but after days and months of running a orphans can be alive. The way I would handle it is...
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Author: Edward Capriolo,
2011-07-05, 17:29
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Re: Jobs are still in running state after executing "hadoop job -kill jobId" - Hadoop - [mail # user]
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...On Tue, Jul 5, 2011 at 10:05 AM, wrote: This happens sometimes. A task gets orphaned from the Task Tracker and never goes away. It is a good idea to have a nagios check for very ...
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Author: Edward Capriolo,
2011-07-05, 14:50
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Re: hadoop 0.20.203.0 Java Runtime Environment Error - Hadoop - [mail # user]
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...That looks like an ancient version of java. Get 1.6.0_u24 or 25 from oracle. Upgrade to a recent java and possibly update your c libs. Edward On Fri, Jul 1, 2011 at 7:24 PM...
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Author: Edward Capriolo,
2011-07-01, 23:42
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