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[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
Re: start hadoop slave over WAN - Hadoop - [mail # user]
...Probably a timeout.  Really, not a good idea to do this in the first place...  Sent from my iPhone  On Mar 30, 2012, at 12:35 PM, "Ben Cuthbert"  wrote:   So nothing...
   Author: Michael Segel, 2012-03-30, 17:52
Re: where are my logging output files going to? - Hadoop - [mail # user]
...You don't want users actually running anything directly on the cluster.  You would set up some machine to launch jobs.  Essentially any sort of Linux machine where you can install ...
   Author: Michael Segel, 2012-03-28, 16:48
Re: MR job launching is slower - Hadoop - [mail # user]
...Hi,  First, it sounds like you have 2 6 core CPUs giving you 12 cores not 24.   Even though the OS reports 24 cores that's the hyper threading and not  real cores.  This ...
   Author: Michael Segel, 2012-03-20, 10:54
Re: Issue when starting services on CDH3 - Hadoop - [mail # user]
...Are you running the init.d scripts as root and what is order of the services  you want to start.   Sent from my iPhone  On Mar 15, 2012, at 11:22 AM, "Manish Bhoge"  wr o...
   Author: Michael Segel, 2012-03-15, 16:43
Re: Hadoop pain points? - Hadoop - [mail # user]
...What? The lack of documentation is what made Hadoop, really HBase, a lot of fun:-)  You know what they say... Not guts, no glory...  I'm sorry, while I agree w Harsh, I just don't ...
   Author: Michael Segel, 2012-03-04, 19:12
Re: Hadoop Datacenter Setup - Hadoop - [mail # user]
...If you are going this route why not net boot the nodes in the cluster?   Sent from my iPhone  On Jan 30, 2012, at 8:17 PM, "Patrick Angeles"  wr ote:       &nbs...
   Author: Michael Segel, 2012-01-31, 02:46
Re: Send Data and Message to all nodes - Hadoop - [mail # user]
...Unless I'm missing something, it sounds like the OP wants to chain jobs wher e the results from one job are the input to another...  Of course it's Sun morning and I haven't had my firs...
   Author: Michael Segel, 2012-01-29, 14:17
[expand - 1 more] - Re: Connect to HDFS running on a different Hadoop-Version - Hadoop - [mail # user]
...Alex,  I said I would be nice and hold my tongue when it comes to IBM and their IM pillar products... :-)  You could write a client that talks to two  different hadoop version...
   Author: Michael Segel, 2012-01-25, 13:19
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB