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Hurray for NN sanity! Even Pre 2.x! - HDFS - [mail # dev]
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...I work for a largish healthcare co. We finally started using (exploiting?) Hadoop this year. The day before our big, C-Suite sponsored launch of Hadoop celebration, we realized t...
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Author: Chris Embree,
2013-04-11, 04:24
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Re: Linux io scheduler - HDFS - [mail # user]
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...I assume your talking about the I/O scheduler. Based on normal advice, only change this if you have a "smart" device between the OS and the Drives. A SATA controller usually qual...
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Author: Chris Embree,
2013-04-02, 18:24
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Re: Replication factor - HDFS - [mail # user]
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...Aww.. You could've used lmgtfy.com :) On Tue, Mar 12, 2013 at 4:57 PM, varun kumar wrote: ...
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Author: Chris Embree,
2013-03-12, 21:04
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Re: About Hadoop Deb file - HDFS - [mail # user]
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...Jokingly I want to say the problem is that you selected Ubuntu (or any other Debian based Linux) as your platform. On a more serious note, if you are new to both Linux and Hadoop, you ...
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Author: Chris Embree,
2013-02-21, 05:02
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Re: Release numbering for branch-2 releases - HDFS - [mail # dev]
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...Hi Arun, et. al., I hope you don't mind a non-contributor butting in here. I'm currently a Hadoop administrator and former application developer (non-hadoop). regarding GA ...
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Author: Chris Embree,
2013-01-31, 01:52
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Re: Maximum Storage size in a Single datanode - HDFS - [mail # user]
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...You should probably think about this in a more cluster fashion. A single node with a PB of data is probably not a good allocation of CPU : Disk ration. In addition, you need enou...
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Author: Chris Embree,
2013-01-30, 11:52
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Re: hdfs du periodicity and hdfs not respond at that time - HDFS - [mail # user]
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...What type of FS are you using under HDFS? XFS, ext3, ext4? The type and configuration of the underlying FS will impact performance. Most notably, ext3 has a lock-up effect ...
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Author: Chris Embree,
2013-01-24, 12:56
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[HDFS-4327] Update documentation to more accurately describe Replication Pipelining - HDFS - [issue]
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...A question was asked on the user list regarding data writes; do we write to disk then forward or do it async? According to Dev. "The received write packet is directly socket-written to...
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http://issues.apache.org/jira/browse/HDFS-4327
Author: Chris Embree,
2012-12-28, 00:10
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