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Re: HBase connection hangs - MapReduce - [mail # user]
...Ted,  actually I get a better error than before, here, http://pastebin.com/idE8R1hD  I am using the latest HBase installed with Cloudera.  By the way, should I ask on a differ...
   Author: Mark Kerzner, 2014-01-14, 03:26
NameNode on persistent memory - MapReduce - [mail # user]
...Hi,  here is a draft of the paper describing our  running Hadoop NN on persistent memory. Two promises are: (1) survives power failure, (2) has no limitation on memory site. Your c...
   Author: Mark Kerzner, 2013-08-23, 03:00
Re: How to test the performance of NN? - MapReduce - [mail # user]
...Awesome advice, Ivan! It works for me now.  Thank you, Mark   On Thu, Jun 6, 2013 at 12:18 AM, Ivan Mitic  wrote:  ...
   Author: Mark Kerzner, 2013-06-07, 01:41
Re: Best way to collect Hadoop logs across cluster - MapReduce - [mail # user]
...Thank you for all the advice, it was indeed very useful.  Mark   On Thu, Apr 18, 2013 at 11:44 PM, Roman Shaposhnik  wrote:  ...
   Author: Mark Kerzner, 2013-04-26, 00:08
Re: Best practices for adding services to Hadoop cluster? - MapReduce - [mail # user]
...True,  and I am building a distributed scalable one -- in other words, back to the same problem, but on this end. But what can one do?  Cheers, Mark  On Wed, Mar 6, 2013 at 11...
   Author: Mark Kerzner, 2013-03-07, 12:13
Re: What should I do with a 48-node cluster - MapReduce - [mail # user]
...Thank you again for your advice. I may be asking the group for more once it becomes real :)  Cheers, Mark  On Sat, Dec 22, 2012 at 7:11 PM, Edward Capriolo wrote:  ...
   Author: Mark Kerzner, 2012-12-23, 01:43
distcp from one secure cluster to another - MapReduce - [mail # user]
...Hi,  Looking at this, https://issues.apache.org/jira/browse/HADOOP-8828, I see that copying from a secure cluster to an unsecured cluster (Kerberos security) is a problem. I can imagine...
   Author: Mark Kerzner, 2012-12-03, 06:06
Strange error in Hive - MapReduce - [mail # user]
...Hi,  I am trying to insert a table in hive, and I am getting this strange error.  Here is what I do  insert overwrite table hivetable struct(lpad(ch, 20, ' '),lpad(start, 10, ...
   Author: Mark Kerzner, 2012-11-14, 22:05
Re: mapred.tasktracker.map.tasks.maximum - MapReduce - [mail # user]
...An important distinction, max slots per node is one thing, and total mappers is something else - it is the total that ran. But now I know where to look.  thank you, mark  On Tue, N...
   Author: Mark Kerzner, 2012-11-13, 15:52
How to control what goes into Hadoop logs? - MapReduce - [mail # user]
...Hi,  My Hadoop cluster runs log with the level of INFO, and it outputs every block-related information to the HDFS log. I would like to keep the INFO level, but suppress block-related i...
   Author: Mark Kerzner, 2012-11-13, 02:00
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