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Re: Data block placement in HDFS - HDFS - [mail # user]
...I think this deals more with our messed up version numbering then anything.   Hadoop-1.0 is not a release that is derived from Hadoop 0.21 or 0.22, it  comes from the 0.20 line. &n...
   Author: Robert Evans, 2012-07-03, 19:06
Re: send a file to a Hadoop Cluster from outside - HDFS - [mail # user]
...It sounds like you don't have the same configuration on this new machine an d on the cluster.  You probably want to talk with the group that runs the c luster so that they can give you ...
   Author: Robert Evans, 2012-06-27, 15:55
Re: ioreply - HDFS - [mail # dev]
...It definitely sounds interesting, kind of like gridmix.  I think that there  are three big issues here.    1. Where are you going to store all of the data, or are you jus...
   Author: Robert Evans, 2012-04-30, 16:05
Re: - HDFS - [mail # user]
...I believe that hsql was only used as part of our tests, and if it was inclu ded in the full release it was probably included by accident.  This may be  a side effect of us switchin...
   Author: Robert Evans, 2012-04-19, 21:20
Re: Copy file using Webhdfs - HDFS - [mail # user]
...Copying files has always involved downloading the data and then uploading i t again. This is true of both FileUtils, and -cp from the command line.  IT  really would be great to ha...
   Author: Robert Evans, 2012-04-16, 13:59
Re: Yahoo Hadoop Tutorial with new APIs? - HDFS - [mail # user]
...I am dropping the cross posts and leaving this on common-user with the othe rs BCCed.  Marcos,  That is a great idea to be able to update the tutorial, especially if the c ommunity...
   Author: Robert Evans, 2012-04-04, 21:29
Re: Proposal: abandon protocol translator layer for cluster-internal RPCs - HDFS - [mail # dev]
...I think what we are talking about here is removing some of the extra layers  of abstraction in java.  The wire protocol used will be identical in eithe r case.  It is just tha...
   Author: Robert Evans, 2012-03-19, 15:11
Re: Combining AVRO files efficiently within HDFS - HDFS - [mail # user]
...Frank,  That depends on what you mean by combining. It sounds like you are trying t o aggregate data from several days, which may involve doing a join so I wou ld say a MapReduce job is...
   Author: Robert Evans, 2012-01-06, 16:46
Re: replication in HDFS - HDFS - [mail # dev]
...Our largest cluster is several thousand nodes and we still run with a repli cation factor of 3.  We have not seen any benefit from having a larger repl ication factor except when it is ...
   Author: Robert Evans, 2011-11-01, 14:09
Re: instantaneous small file uploads to HDFS - HDFS - [mail # user]
...If the files are actually very small then it might be good to try and use H BASE.   On 10/17/11 11:17 PM, "visioner sadak"  wrote:  Hello guys,  My client application req...
   Author: Robert Evans, 2011-10-19, 17:16
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