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Re: Loading Data into HDFS from non-cluster node - Hadoop - [mail # user]
...Hi Asif,  Just install the Hadoop package onto the external node to use it as a client. On that node, you set your fs.default.name parameter to point to the cluster, but you don't start...
   Author: Aaron Kimball, 2009-07-16, 20:23
[expand - 1 more] - Re: hadoop cluster startup error - Hadoop - [mail # user]
...I think you might have the commands backwards. hadoop fs -get will copy from HDFS to the local filesystem. So it assumes that /usr/divij/wordcount/input is in HDFS and that you want to write...
   Author: Aaron Kimball, 2009-07-15, 01:57
Re: Looking for counterpart of Configure Method - Hadoop - [mail # user]
...void close(). - Aaron  On Mon, Jul 13, 2009 at 11:31 AM, akhil1988  wrote:  ...
   Author: Aaron Kimball, 2009-07-13, 22:16
[expand - 3 more] - Re: Error reading task output - Hadoop - [mail # user]
...Hmm. DEBUG entries are just debug-level detail. The ERROR and WARN level entries are the problematic ones.  What's your hadoop-site.xml file look like? If you're storing data underneath...
   Author: Aaron Kimball, 2009-07-13, 22:14
Re: Custom input help/debug help - Hadoop - [mail # user]
...Hi Matthew,  You can set the heap size for child jobs by calling conf.set("mapred.child.java.opts", "-Xmx1024m") to get a gig of heap space. That should fix the OOM issue in IsolationRu...
   Author: Aaron Kimball, 2009-07-09, 22:09
Re: Hadoop: Reduce exceeding 100% - a bug? - Hadoop - [mail # user]
...Reduce tasks which require more than twenty minutes are not a problem. But you must emit some data periodically to inform the rest of the system that each reducer is still alive. Emitting a ...
   Author: Aaron Kimball, 2009-07-09, 21:31
Re: Forcing Many Map Nodes - Hadoop - [mail # user]
...If you look into FileInputFormat, you'll see that there's a call to FileSystem.getFileBlockLocations() (line 222) which finds the addresses of the nodes holding the blocks to be mapped. Each...
   Author: Aaron Kimball, 2009-07-08, 21:29
Re: BytesWriteable, why no set(byte[])? - Hadoop - [mail # user]
...It does an array copy because there is no contract that you won't change those bytes out from under the object. The Writable objects are assumed to be wholely self-contained.  You could...
   Author: Aaron Kimball, 2009-07-05, 06:32
Re: 0.20: Configured Capacity: 0 (0 KB) - Hadoop - [mail # user]
...Can you post your hdfs-site.xml file? - Aaron  On Wed, Jul 1, 2009 at 9:57 AM, Bogdan M. Maryniuk  wrote:  ...
   Author: Aaron Kimball, 2009-07-02, 00:38
Re: Apache git mirrors, post project split - Hadoop - [mail # dev]
...Chris,  No operations in git ever require connectivity to an upstream remote, except for the obvious ones of "pull more down from remote" and "push local refs up to remote." All history...
   Author: Aaron Kimball, 2009-06-30, 02:18
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