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[expand - 1 more] - Re: Out of Java heap space - Hadoop - [mail # user]
...oops, 2048 instead of 1024 did it. Even though on my machine 1024 was enough - but that's not such a big puzzle  On Mon, Dec 7, 2009 at 6:26 PM, Mark Kerzner  wrote:  ...
   Author: Mark Kerzner, 2009-12-08, 00:47
all or nothing? - Hadoop - [mail # user]
...Hi,  MapReduce article mentions that one can tell MR how many machines to use for the job, and then you can run multiple jobs on the cluster. I believe this is not part of Hadoop, corre...
   Author: Mark Kerzner, 2009-12-04, 06:21
[expand - 2 more] - Re: error connecting to port 50002 - Hadoop - [mail # user]
...In the final analysis, the Apache Hadoop 0.19 cluster on EC2 sometimes has problems running after first start-up, and almost always has problems after running a job. Rebooting fixes it. &nbs...
   Author: Mark Kerzner, 2009-12-01, 03:32
Apache Hadoop 0.19 cluster on EC2 - intermittent errors - Hadoop - [mail # user]
...Hi,  I was able to make the job run once without errors to the end, so I know that basically the code is OK. However, the second time I tried to run it, I got strange errors. For exampl...
   Author: Mark Kerzner, 2009-11-30, 19:07
[expand - 2 more] - Re: log files on the cluster? - Hadoop - [mail # user]
...Thank you!  On Sun, Nov 29, 2009 at 11:40 AM, Jeff Hammerbacher wrote:  ...
   Author: Mark Kerzner, 2009-11-29, 17:56
[expand - 2 more] - Re: part-00000.deflate as output - Hadoop - [mail # user]
...Thank you, guys, for your very useful answers  Mark  On Fri, Nov 27, 2009 at 12:44 PM, Aaron Kimball  wrote:  ...
   Author: Mark Kerzner, 2009-11-27, 19:25
[expand - 2 more] - Re: EC2 Hadoop 0.19 image is only 3 Gigs harddrive - too small - Hadoop - [mail # user]
...Oh, and all instances  http://aws.amazon.com/ec2/instance-types/ have 10 Gig root partition, so where did this go? I guess somebody wanted extra small root.  On Wed, Nov 25, 2009 a...
   Author: Mark Kerzner, 2009-11-25, 21:07
[expand - 2 more] - Re: Hadoop on EC2 - Hadoop - [mail # user]
...It did! thank you  hadoop fs -ls hdfs:// Found 1 items drwxr-xr-x   - root supergroup          0 2009-11-24 23:04 /mnt  On Tue, Nov 24, 2009 at 11:37 ...
   Author: Mark Kerzner, 2009-11-25, 05:51
[expand - 1 more] - Re: How do I reference S3 from an EC2 Hadoop cluster? - Hadoop - [mail # user]
...Yes, Tom, I saw all these problems. I think that I should stop trying to imitate EMR - that's where the storing data on S3 appeared, and transfer data directly to the Hadoop cluster. Then I ...
   Author: Mark Kerzner, 2009-11-25, 05:27
Master and slaves on hadoop/ec2 - Hadoop - [mail # user]
...Hi,  do I understand it correctly that, when I launch a Hadoop cluster on EC2, the master will not be doing any work, and it is just for organizing work, while the slaves will be actual...
   Author: Mark Kerzner, 2009-11-25, 00:57
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