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Re: hadoop - running examples - MapReduce - [mail # user]
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...On Thu, Nov 8, 2012 at 1:48 PM, Kartashov, Andy wrote: If you need to change existing data, you do need to write a new file, or delete the old file then re-write it. So as ...
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Author: Andy Isaacson,
2012-11-08, 23:33
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Re: Missing documentation on HDFS 2.0.2 - MapReduce - [mail # user]
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...The 404 link is due to https://issues.apache.org/jira/browse/HADOOP-8427 and https://issues.apache.org/jira/browse/HADOOP-8860 which we unfortunately haven't finished fixing yet. Apologies f...
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Author: Andy Isaacson,
2012-11-08, 21:16
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Re: File to large Error when MR - MapReduce - [mail # user]
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...Moving the thread to user@. The general@ list is not used for technical questions. On Fri, Nov 2, 2012 at 1:59 AM, zjl208399617 wrote: This error is EFBIG from your filesys...
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Author: Andy Isaacson,
2012-11-05, 18:13
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Re: cluster set-up / a few quick questions - MapReduce - [mail # user]
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...On Fri, Oct 26, 2012 at 11:47 AM, Kartashov, Andy wrote: and are now trying to try fully-dist'ed one. It seems like you're trying to use the start-dfs.sh style startup scripts to...
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Author: Andy Isaacson,
2012-10-26, 21:32
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Re: cluster set-up / a few quick questions - MapReduce - [mail # user]
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...On Fri, Oct 26, 2012 at 9:40 AM, Kartashov, Andy wrote: We're not all male here. :) I prefer "Hadoopers" or "hi all,". Master. I have a 4-node cluster, named f...
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Author: Andy Isaacson,
2012-10-26, 18:20
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Re: ERROR: ssh-copy-id: command not found IN HADOOP DISTRIBUTED MODE - MapReduce - [mail # user]
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...On Thu, Oct 25, 2012 at 7:01 AM, wrote: /authorized_keys' The most common cause of this (once the .pub is properly copied to authorized_keys) is permissions problems. Make sure ...
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Author: Andy Isaacson,
2012-10-25, 20:38
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Re: What is the command to see if a file is a directory or not in HDFS from bash? - MapReduce - [mail # user]
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...BTW, while verifying this behavior I noticed that there is a bug in Hadoop 2.0 "dfs -test -d", it generates error messages when it should be silent. I filed the bug at https://is...
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Author: Andy Isaacson,
2012-10-22, 22:02
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Re: What is the command to see if a file is a directory or not in HDFS from bash? - MapReduce - [mail # user]
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...The result is reported in the shell exit code, not as a textual output from the command, just like the UNIX /usr/bin/test command. The intended use case is something like the following...
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Author: Andy Isaacson,
2012-10-22, 21:57
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Re: Does Hadoop Require Public IP address to create a cluster. - MapReduce - [mail # user]
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...On Wed, Oct 17, 2012 at 2:04 PM, Sundeep Kambhmapati wrote: Hadoop does not require public IP addresses. I routinely run a multinode cluster on 192.168.x.y using several VMs in a...
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Author: Andy Isaacson,
2012-10-17, 21:51
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Re: DFS respond very slow - MapReduce - [mail # user]
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...Also, note that JVM startup overhead, etc, means your -ls time is not completely unreasonable. Using OpenJDK on a cluster of VMs, my "hdfs dfs -ls" takes 1.88 seconds according to time (and ...
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Author: Andy Isaacson,
2012-10-16, 01:56
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