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Re: Hadoop with Sharded MySql - Hadoop - [mail # user]
...Ok just tossing out some ideas... Take them with a grain of salt...  With hive you can create external tables.  Write a custom Java app the creates one thread to each server. Then ...
   Author: Michael Segel, 2012-06-02, 00:09
Re: Pragmatic cluster backup strategies? - Hadoop - [mail # user]
...Hi, That's not a back up strategy.  You could still have joe luser take out a key file or directory. What do  you do then?  On May 29, 2012, at 11:19 AM, Darrell Taylor wrote:...
   Author: Michael Segel, 2012-05-29, 16:40
Re: How to Integrate LDAP in Hadoop ? - Hadoop - [mail # user]
...I believe that their CDH3u3 or later has this... parameter.  (Possibly even earlier.)  On May 29, 2012, at 6:12 AM, samir das mohapatra wrote:  wrote:  ...
   Author: Michael Segel, 2012-05-29, 14:13
[expand - 1 more] - Re: is hadoop suitable for us? - Hadoop - [mail # user]
...You are going to have to put HDFS on top of your SAN.   The issue is that you introduce overhead and latencies by having  attached storage rather than the drives physically on the ...
   Author: Michael Segel, 2012-05-18, 10:10
[expand - 1 more] - Re: freeze a mapreduce job - Hadoop - [mail # user]
...I haven't seen any.  Haven't really had to test that...  On May 11, 2012, at 9:03 AM, Shi Yu wrote:  are some parameters to control the waiting time of a job (such as  ti...
   Author: Michael Segel, 2012-05-11, 14:58
Re: Reduce Hangs at 66% - Hadoop - [mail # user]
...Well  That was one of the things I had asked.  ulimit -a says it all.   But you have to do this for the users... hdfs, mapred, and hadoop  (Which is why I asked about whi...
   Author: Michael Segel, 2012-05-04, 15:22
Re: Changing the Java heap - Hadoop - [mail # user]
...Not sure of your question.   Java child Heap size is independent of how files are split on HDFS.   I suggest you look at Tom White's book on HDFS and how files are split  in t...
   Author: Michael Segel, 2012-04-26, 20:56
Re: Feedback on real world production experience with Flume - Hadoop - [mail # user]
...Gee Edward, what about putting a link to a company website or your blog in y our signature... ;-)  Seriously one could also mention fuse, right?  ;-)   Sent from my iPhone &nb...
   Author: Michael Segel, 2012-04-22, 15:34
[expand - 1 more] - Re: Help me with architecture of a somewhat non-trivial mapreduce implementation - Hadoop - [mail # user]
...If the file is small enough you could read it in to a java object like a  list and write your own input format that takes a list object as its  input and then lets you specify the ...
   Author: Michael Segel, 2012-04-20, 04:38
Re: Multiple data centre in Hadoop - Hadoop - [mail # user]
...I don't know of any open source solution in doing this...  And yeah its something one can't talk about....  ;-)   On Apr 19, 2012, at 4:28 PM, Robert Evans wrote:  open s...
   Author: Michael Segel, 2012-04-19, 21:31
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