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Re: Copying a file to specified nodes - Hadoop - [mail # user]
...Hey Rasit,  I'm not sure I fully understand your description of the problem, but you might want to check out the JIRA ticket for making the replica placement algorithms in HDFS pluggabl...
   Author: Jeff Hammerbacher, 2009-02-10, 20:50
Re: using HDFS for a distributed storage system - Hadoop - [mail # user]
...Yo,  I don't want to sound all spammy, but Tom White wrote a pretty nice blog post about small files in HDFS recently that you might find helpful. The post covers some potential solutio...
   Author: Jeff Hammerbacher, 2009-02-10, 02:35
Re: Backing up HDFS? - Hadoop - [mail # user]
...Hey,  There's also a ticket open to enable global snapshots for a single HDFS instance: https://issues.apache.org/jira/browse/HADOOP-3637. While this doesn't solve the multi-site backup...
   Author: Jeff Hammerbacher, 2009-02-10, 01:47
Re: Available Patches - Hadoop - [mail # dev]
...+1 to splitting Chukwa out as a subproject.  On Sat, Feb 7, 2009 at 2:53 PM, Johan Oskarsson  wrote:  ...
   Author: Jeff Hammerbacher, 2009-02-08, 07:49
[expand - 1 more] - Re: Hadoop job using multiple input files - Hadoop - [mail # user]
...You put the files into a common directory, and use that as your input to the MapReduce job. You write a single Mapper class that has an "if" statement examining the map.input.file property, ...
   Author: Jeff Hammerbacher, 2009-02-06, 13:22
Re: Job Tracker/Name Node redundancy - Hadoop - [mail # user]
...Hey Ryan,  Some specific JIRA tickets that will help narrow your search:  JT: https://issues.apache.org/jira/browse/HADOOP-4586 NN: https://issues.apache.org/jira/browse/HADOOP-453...
   Author: Jeff Hammerbacher, 2009-01-09, 21:29
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