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Re: building a department GPU cluster - MapReduce - [mail # user]
...On Thu, Jan 17, 2013 at 12:24 AM, Roberto Nunnari wrote:   My understanding (although I could be wrong) is that only one task is going to be able to use the GPU at a time, so you're goi...
   Author: Colin McCabe, 2013-01-28, 22:34
Re: same edits file is loaded more than once - MapReduce - [mail # user]
...Hi,  If you want to learn more about HA in HDFS, here are some slides from a talk that Aaron T. Meyers and Suresh Srinivas gave: http://www.slideshare.net/hortonworks/nn-ha-hadoop-world...
   Author: Colin McCabe, 2012-11-07, 19:14
Re: problem with hadoop-snappy - MapReduce - [mail # user]
...I think what you're hitting is probably https://issues.apache.org/jira/browse/HADOOP-8756.  It was fixed in branch-2 and branch-3, but not in the old releases.  If you want to work...
   Author: Colin McCabe, 2012-11-07, 18:56
Re: Using a hard drive instead of - MapReduce - [mail # user]
...Hi Mark,  HDFS contains a write-ahead log which will protect you from power failure.  It's called the edit log.  If you want warm failover, you can use HDFS HA, which is avail...
   Author: Colin McCabe, 2012-10-17, 23:21
Re: HDFS-347 and HDFS-2246 issues different - MapReduce - [mail # user]
...Would it make more sense to post these comments on the JIRA? This list is more for user issues.  In general, I don't see why the DataNode being "dead" has anything to do with whether we...
   Author: Colin McCabe, 2012-10-09, 21:13
Re: sym Links in hadoop - MapReduce - [mail # user]
...You can create an HDFS symlink by using the FileContext#createSymlink function.  I don't think this can be done through the "hadoop fs" command, so you're going to have to write some Ja...
   Author: Colin McCabe, 2012-10-08, 18:32
Re: Native not compiling in OS X Mountain Lion - MapReduce - [mail # user]
...There hasn't been a lot of demand for Hadoop clusters running on MacOS X, so in general the native build does not work on that platform. However, the java build should work fine, of course. ...
   Author: Colin McCabe, 2012-08-13, 20:37
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