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Re: Java 1.6.0_19 & Hadoop - Hadoop - [mail # dev]
...I seem to be ok with the little bit of _20 I've been using.  On Jul 21, 2010, at 5:58 AM, Bill Au wrote:  o o javacpumar2010.html nds e...
   Author: Allen Wittenauer, 2010-07-21, 15:02
Re: Data Block Size ? - Hadoop - [mail # general]
...On Jul 15, 2010, at 11:40 AM, Syed Wasti wrote:   Yes.  he data block size to 128 MB, should this effect the performance ?  Yes.  FWIW, we run with 128MB.  the block...
   Author: Allen Wittenauer, 2010-07-15, 18:49
Re: WARN util.NativeCodeLoader: Unable to load native-hadoop library - Hadoop - [mail # user]
...On Jul 14, 2010, at 8:45 AM, Some Body wrote: e.  ...   (required by ./libhadoop.so.1.0.0)  OK, here's your answer.  The glibc version that this was compiled with is (lik...
   Author: Allen Wittenauer, 2010-07-14, 16:27
Re: Thoughts about Hadoop cluster hardware - Hadoop - [mail # user]
...On Jul 13, 2010, at 5:00 PM, u235sentinel wrote:  doop cluster but I'm wondering.  Isn't this still a little overboard for no des in a cluster?  I'm wondering if we bought say...
   Author: Allen Wittenauer, 2010-07-14, 03:36
Re: using 'fs -put' from datanode: all data written to that node's hdfs and not distributed - Hadoop - [mail # user]
...When you write on a machine running a datanode process, the data is *always * written locally first.  This is to provide an optimization to the MapRedu ce framework.   The lesson h...
   Author: Allen Wittenauer, 2010-07-13, 16:51
Re: jni files - Hadoop - [mail # general]
...On Jul 9, 2010, at 2:09 AM, amit kumar verma wrote: that I need to copy jni files to HADOOP_INSTALLATION_DIR//lib/native/Linux- xxx-xxx.  lib/native/xxx are for the native compression l...
   Author: Allen Wittenauer, 2010-07-09, 18:24
Re: Question about Data Node configuration - Hadoop - [mail # user]
...On Jul 7, 2010, at 10:38 AM, A Levine wrote:  I've always partitioned out the root drive so that there is a dedicated fil e system for Hadoop.  In other words, the root disk has tw...
   Author: Allen Wittenauer, 2010-07-07, 19:17
Re: How do I remove "Non DFS Used"? - Hadoop - [mail # user]
...On Jul 7, 2010, at 6:48 AM, Michael Segel wrote:    It can also be the result of hadoop not properly parsing df.  [ZFS pools, f or example.]...
   Author: Allen Wittenauer, 2010-07-07, 17:12
Re: HDFS without Consideration for Map and Reduce - Hadoop - [mail # user]
...On Jul 6, 2010, at 1:51 PM, Ananth Sarathy wrote:  y  In other words,  "What is the best way to make this square peg fit in this  round hole?"  You should probably b...
   Author: Allen Wittenauer, 2010-07-06, 23:26
Re: iozone is not working with HDFS over libfuse - Hadoop - [mail # user]
...On Jul 6, 2010, at 11:56 AM, Brian Bockelman wrote: + is exercising things which HDFS doesn't support (such as writes to a file  which is already closed or seeks during writes).   ...
   Author: Allen Wittenauer, 2010-07-06, 19:09
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