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Re: Cloudera Vs Hortonworks Vs MapR - MapReduce - [mail # user]
...Raj,  As others noted, this is not a great place for this discussion.  I'd suggest contacting the vendors you are interested in as I'm sure we'd all be happy to provide you more de...
   Author: Aaron Eng, 2013-09-12, 18:14
Re: rack awareness in hadoop - MapReduce - [mail # user]
...The problem is probably not related to the JVM memory so much as the Linux memory manager.  The exception is in java.lang.UNIXProcess.(UNIXProcess.java:148) which would imply this is ha...
   Author: Aaron Eng, 2013-04-20, 23:19
Re: Why they recommend this (CPU) ? - MapReduce - [mail # user]
...Without a doubt, there are many CPU intensive workloads where the amount of CPU cycles consumed to process some amount of data is many times higher than what would be considered relatively n...
   Author: Aaron Eng, 2012-10-11, 19:15
Re: Hadoop failing jobs non zero exit status 7 - MapReduce - [mail # user]
...Hi Robin,  "Task process exit with nonzero status of 7." is being printed by the TaskTracker to indicate the child JVM spawned to run the task attempt in question exited unexpectedly. T...
   Author: Aaron Eng, 2012-09-13, 17:39
Re: Hadoop on EC2 Managing Internal/External IPs - MapReduce - [mail # user]
...Hi Igor,  Amazon offers a service where you can have a VPN gateway on your network that leads directly back to the network where youre instances are at.  So that 10.123.x.x subnet ...
   Author: Aaron Eng, 2012-08-24, 03:02
Re: hadoop single user setup - MapReduce - [mail # user]
...When you run the Hadoop CLI command it spawns a java process which in turn tries to connect to the namenode service. In this case, your client is trying to reach the namenode at "localhost" ...
   Author: Aaron Eng, 2011-01-10, 22:44
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