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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
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
Re: Problems with timeout when a Hadoop job generates a large number of key-value pairs - Hadoop - [mail # user]
...Thats the one ...  Sent from my iPhone  On Jan 20, 2012, at 6:28 PM, "Paul Ho"  wrote:  te.xml: ly for balancing. eter but there are only a couple that deal with bandwidt...
   Author: Michael Segel, 2012-01-21, 04:15
Re: I am trying to run a large job and it is consistently failing with timeout - nothing happens for 600 sec - Hadoop - [mail # user]
...But Steve, it is your code... :-)  Here is a simple test...  Set your code up where the run fails...  Add a simple timer to see how long you spend in the Mapper.map() method. ...
   Author: Michael Segel, 2012-01-19, 03:08
RE: Does hadoop installations need to be at same locations in cluster ? - Hadoop - [mail # user]
...Ok,  Here's the thing...  1) When building the cluster, you want to be consistent.  2) Location of $HADOOP_HOME is configurable. So you can place it anywhere.  Putting th...
   Author: Michael Segel, 2011-12-23, 17:55
Re: Hadoop configuration - Hadoop - [mail # user]
...Class project due? Sorry, second set of questions on setting up a 2 node cluster...  Sent from my iPhone  On Dec 22, 2011, at 3:25 AM, "Humayun kabir"  wrote:  ...
   Author: Michael Segel, 2011-12-23, 12:59
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