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Re: How does hadoop deal with hadoop-site.xml? - Hadoop - [mail # user]
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...Hi Inifok, This is a confusing aspect of Hadoop, I'm afraid. Settings are divided into two categories: "per-job" and "per-node." Unfortunately, which are which, isn't documented....
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Author: Aaron Kimball,
2009-08-19, 23:38
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Re: Location of the source code for the fair scheduler - Hadoop - [mail # user]
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...Hi Mithila, In the Mapreduce svn tree, it's under src/contrib/fairscheduler/ - Aaron On Wed, Aug 19, 2009 at 2:48 PM, Mithila Nagendra wrote: ...
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Author: Aaron Kimball,
2009-08-19, 23:29
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Re: Running Cloudera's distribution without their support agreement - is that a bad idea? - Hadoop - [mail # user]
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...Hi Erik, We built our distribution to make it easy for you to get started using Hadoop -- not to force you into buying a support agreement. (Though if you're running Hadoop in a produc...
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Author: Aaron Kimball,
2009-08-19, 23:28
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Re: What will we encounter if we add a lot of nodes into the current cluster? - Hadoop - [mail # user]
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...Also, if you haven't yet configured rack awareness, now's a good time to start :) - Aaron On Tue, Aug 11, 2009 at 11:27 PM, Ted Dunning wrote: ...
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Author: Aaron Kimball,
2009-08-12, 21:03
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Re: Need info about "mapred.input.format.skew" - Hadoop - [mail # user]
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...Cubic, I don't see that string appear anywhere in the MapReduce trunk source. Where'd you come across this? - Aaron On Tue, Aug 11, 2009 at 12:53 PM, CubicDesign wrote: &nb...
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Author: Aaron Kimball,
2009-08-12, 21:01
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Re: XML files in HDFS - Hadoop - [mail # user]
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...Wasim, RecordReader implementations should never require that elements not be spread across multiple blocks. The start and end offsets into a file in an InputSplit are taken as soft li...
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Author: Aaron Kimball,
2009-08-11, 23:01
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Re: newbie question - Hadoop - [mail # user]
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...You can set it on a per-file basis if you'd like the control. The data structures associated with files allow these to be individually controlled. But there's also a create() call that...
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Author: Aaron Kimball,
2009-08-10, 18:42
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Re: ~ Replacement for MapReduceBase ~ - Hadoop - [mail # user]
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...Naga, That's right. In the old API, Mapper and Reducer were just interfaces and didn't provide default implementations of their code. Thus MapReduceBase. Now Mapper and Reducer are cla...
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Author: Aaron Kimball,
2009-08-10, 17:53
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Re: Maps running - how to increase? - Hadoop - [mail # user]
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...I don't know that your load-in speed is going to dramatically increase. There's a number of parameters that adjust aspects of MapReduce, but HDFS more or less works out of the box. You shoul...
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Author: Aaron Kimball,
2009-08-06, 20:45
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Re: Help in running hadoop from eclipse - Hadoop - [mail # user]
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...May I ask why you're trying to run the NameNode in Eclipse? This is likely going to cause you lots of classpath headaches. I think your current problem is that it can't find its config files...
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Author: Aaron Kimball,
2009-08-06, 18:09
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