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Re: about block size - Hadoop - [mail # user]
...One factor is that block size should minimize the impact of disk seeks.    For example, if a disk seeks in 10ms and transfers at 100MB/s, then a  good block size will be subst...
   Author: Doug Cutting, 2009-03-12, 17:22
[expand - 1 more] - Re: Not a host:port pair when running balancer - Hadoop - [mail # user]
...Konstantin Shvachko wrote:  Since 0.18, the port is optional.  If no port is specified, then 8020 is  used.  8020 is the default port for namenodes.  https://issues....
   Author: Doug Cutting, 2009-03-11, 19:13
Re: Does "hadoop-default.xml" + "hadoop-site.xml" matter for whole cluster or each node? - Hadoop - [mail # user]
...Owen O'Malley wrote:  There is some method to the madness.  Things that are only set programmatically, like most job parameters,  e.g, the mapper, reducer, etc, are not listed...
   Author: Doug Cutting, 2009-03-09, 19:40
[expand - 1 more] - Re: Hadoop with case-preservation and case-insensitivity - Hadoop - [mail # dev]
...Paul Sheer wrote:  You didn't imply that Hadoop ought to support it.  But maintaining your  own private branch is a bad idea long-term, and you'll not get a lot of  help ...
   Author: Doug Cutting, 2009-03-05, 20:58
[expand - 1 more] - Re: creating a branch for Hadoop-3628 - Hadoop - [mail # dev]
...Owen O'Malley wrote:  I thought you'd raise that right after I sent that last message.  I  agree: there are tools out of our control that we'd like to use (like  git-svn ...
   Author: Doug Cutting, 2009-03-05, 19:36
Re: Recommend JSON Library? net.sf.json has memory leak - Hadoop - [mail # user]
...Ian Swett wrote:  I also use Jackson and recommend it.  Doug...
   Author: Doug Cutting, 2009-03-05, 19:00
Re: How does NVidia GPU compare to Hadoop/MapReduce - Hadoop - [mail # user]
...I think they're complementary.  Hadoop's MapReduce lets you run computations on up to thousands of  computers potentially processing petabytes of data.  It gets data from &nbs...
   Author: Doug Cutting, 2009-02-27, 19:21
[expand - 4 more] - Re: Hadoop 0.19.1 - Hadoop - [mail # dev]
...Steve Loughran wrote:  Yes, but trunk is what we share as a community, our consensus reality.  We should be careful not to overly fragment our community.  We can't  vote ...
   Author: Doug Cutting, 2009-02-18, 23:58
Re: anybody knows an apache-license-compatible impl of Integer.parseInt? - Hadoop - [mail # dev]
...Zheng Shao wrote:  http://svn.apache.org/viewvc/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/lang/Integer.java?revision=732988  Doug...
   Author: Doug Cutting, 2009-02-10, 21:13
Re: FileInputFormat directory traversal - Hadoop - [mail # user]
...Hi, Ian.  One reason is that a MapFile is represented by a directory containing  two files named "index" and "data".  SequenceFileInputFormat handles  MapFiles too by, if...
   Author: Doug Cutting, 2009-02-03, 21:28
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