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Re: Cloudera Vs Hortonworks Vs MapR - MapReduce - [mail # user]
...I would just through an additional point on top of Shahab's excellent summary.  To evaluate a distribution requires more than just the technical aspects of that distribution. Even if we...
   Author: Adam Muise, 2013-09-13, 18:01
[expand - 2 more] - Re: Hadoop on IPv6 - MapReduce - [mail # user]
...Harsh is giving you a best practice for JVMs using IPv4 in general. As what I am suggesting is IPv4-only connections to the Hadoop daemons and clients on the cluster and gateway, you would n...
   Author: Adam Muise, 2013-09-10, 16:34
Re: Multidata center support - MapReduce - [mail # user]
...Nothing has changed. DR best practice is still one (or more) clusters per site and replication is handled via distributed copy or some variation of it. A cluster spanning multiple data cente...
   Author: Adam Muise, 2013-08-30, 10:26
Re: Is hadoop tread safe? - MapReduce - [mail # user]
...Mappers don't communicate with each other in traditional MapReduce. If you need something more MPI-ish then look to MPI over YARN or write your own YARN app.  If you need multi-threadin...
   Author: Adam Muise, 2013-08-29, 14:40
Re: updated to 1.2.1, map completed percentage keeps oscillating - MapReduce - [mail # user]
...I'm assuming you are trying the same job with the same data as before. Try taking a look at the job output for the mappers in the JobTracker. Likely you will see some failures and probably a...
   Author: Adam Muise, 2013-08-14, 01:31
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