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Re: commons-configuration parsing error with ivy - Hadoop - [mail # dev]
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...Chris had the exact the same problem and we discovered the same reason/solution (ivy-2.0.0rc2.jar in $HOME/.ant/lib) by turning on ant debug (ant -d -v). I didn't know that it's a prevalent ...
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Author: Luke Lu,
2011-05-25, 17:42
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Re: Configuring jvm metrics in hadoop-0.20.203.0 - Hadoop - [mail # user]
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...On Fri, May 20, 2011 at 9:02 AM, Matyas Markovics wrote: The (documented) syntax is [lowercased-service].sink.[sink-name].[option], So for jobtracker it would be jobtracker.sink....
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Author: Luke Lu,
2011-05-22, 03:42
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Re: metrics2 ganglia monitoring - Hadoop - [mail # user]
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...Ganglia plugin is not yet ported to metrics v2 (because Y don't use Ganglia, see also the discussion links on HADOOP-6728). It shouldn't be hard to do a port though, as the new sink interfac...
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Author: Luke Lu,
2011-05-18, 18:59
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Re: Memory mapped resources - Hadoop - [mail # user]
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...You can use distributed cache for memory mapped files (they're local to the node the tasks run on.) http://developer.yahoo.com/hadoop/tutorial/module5.html#auxdata On Tue, Apr 12...
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Author: Luke Lu,
2011-04-12, 19:50
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Re: Add Guava as a dependency? - Hadoop - [mail # dev]
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...+1. guava is the new apache commons, maintained by java experts with comprehensive test coverage. I also propose to deprecate any existing utils in hadoop-common with duplicate functio...
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Author: Luke Lu,
2011-02-11, 12:09
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Re: monitor the hadoop cluster - Hadoop - [mail # user]
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...The job detail page from the jobtracker shows a lot of information about any given job: the start/finish times of each task and various counters (like time spent in various phase, the input/...
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Author: Luke Lu,
2010-11-11, 20:31
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Re: is there any way to set the niceness of map/reduce jobs - Hadoop - [mail # user]
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...nice(1) only changes cpu scheduling priority. It doesn't really help if you have tasks (and their child processes) that use too much memory, which causes swapping, which is probably the real...
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Author: Luke Lu,
2010-11-03, 01:17
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Re: load a serialized object in hadoop - Hadoop - [mail # user]
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...Just took a look at the bin/hadoop of your particular version (http://svn.apache.org/viewvc/hadoop/common/tags/release-0.19.2/bin/hadoop? revision=796970&view=markup). It looks like that HAD...
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Author: Luke Lu,
2010-10-14, 00:04
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Re: load a serialized object in hadoop - Hadoop - [mail # user]
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...On Wed, Oct 13, 2010 at 2:21 PM, Shi Yu wrote: HADOOP_CLIENT_OPTS is an environment variable so you should run it as HADOOP_CLIENT_OPTS=-Xmx1000m bin/hadoop jar Test.jar OOloadte...
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Author: Luke Lu,
2010-10-13, 21:28
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Re: load a serialized object in hadoop - Hadoop - [mail # user]
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...On Wed, Oct 13, 2010 at 12:27 PM, Shi Yu wrote: ry ng is a op If you are just trying to use bin/hadoop jar your.jar command, your code runs in a local client jvm and mapred.child...
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Author: Luke Lu,
2010-10-13, 20:28
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