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Re: Remote access to cluster using user as hadoop - Hadoop - [mail # user]
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...The current best practice is to firewall off your cluster, configure a SOCKS proxy/gateway, and only allow traffic to the cluster from the gateway. Being able to SSH into the gateway provide...
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Author: Aaron Kimball,
2009-07-23, 16:17
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Re: Testing Mappers in Hadoop 0.20.0 - Hadoop - [mail # user]
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...+CC mapred-dev Hm.. Making this change is actually really difficult. After changing Mapper.java, I understand why this was made a non-static member. By making Context non-s...
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Author: Aaron Kimball,
2009-07-23, 03:17
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Re: Testing Mappers in Hadoop 0.20.0 - Hadoop - [mail # user]
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...Both of those are good points. I'll submit a patch. - Aaron On Wed, Jul 22, 2009 at 6:24 PM, Ted Dunning wrote:...
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Author: Aaron Kimball,
2009-07-23, 02:22
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Re: Eclipse plugin for Hadoop Pipes? - Hadoop - [mail # user]
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...If there is one, it's not contributed back to the public project. My guess is probably not :( - Aaron On Wed, Jul 22, 2009 at 10:00 AM, Alberto Luengo Cabanillas wrote: ing...
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Author: Aaron Kimball,
2009-07-22, 23:54
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Re: Testing Mappers in Hadoop 0.20.0 - Hadoop - [mail # user]
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...Hi David, I wrote a contrib module called MRUnit (http://issues.apache.org/jira/browse/hadoop-5518) designed to allow unit tests for mappers/reducers more easily. It's slated for inclu...
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Author: Aaron Kimball,
2009-07-22, 23:52
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Re: native-lzo library not available issue with terasort - Hadoop - [mail # user]
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...Native LZO support was removed from Hadoop due to licensing restrictions. See http://www.cloudera.com/blog/2009/06/24/parallel-lzo-splittable-compression -for-hadoop/ for a writeup on how to...
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Author: Aaron Kimball,
2009-07-22, 02:09
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Re: datanode auto down - Hadoop - [mail # user]
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...I'd say that this is your problem right here: Heap Size is 972.5 MB / 972.5 MB (100%) As suspected, your very small block size + many files has completely filled the NameNode hea...
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Author: Aaron Kimball,
2009-07-22, 02:07
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Re: Hadoop logging - Hadoop - [mail # user]
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...Hm. What version of Hadoop are you running? Have you modified the log4j.properties file in other ways? The logfiles generated by Hadoop should, by default, switch to a new file every d...
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Author: Aaron Kimball,
2009-07-22, 02:01
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Re: Question on setting a new user variable with JobConf - Hadoop - [mail # user]
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...And regarding your desire to set things on the command line: If your program implements Tool and is launched via ToolRunner, you can specify "-D myparam=myvalue" on the command line and it'l...
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Author: Aaron Kimball,
2009-07-22, 01:55
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Re: Can't compile the example WordCount.java - Hadoop - [mail # user]
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...What happens if you recompile with -verbose? Can you paste the output here? - Aaron On Sat, Jul 18, 2009 at 9:34 PM, Richard Bowser wrote: ...
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Author: Aaron Kimball,
2009-07-21, 00:17
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