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Re: Read namenode data from primary memory - MapReduce - [mail # user]
...Hi Aditya:    This command line may help you:       hadoop dfsadmin --saveNamespace       you should firstly perform it in safe mode.     &n...
   Author: Ling Kun, 2013-05-14, 06:48
[expand - 1 more] - Re: When and who move the reduce output file part-0000X to the final output directory - MapReduce - [mail # user]
...Thanks Harsh! your reply helps me a lot.  Kun Ling   On Fri, May 10, 2013 at 1:26 PM, Harsh J  wrote:     http://www.lingcc.com...
   Author: Ling Kun, 2013-05-10, 05:40
Re: How can I add a new hard disk in an existing HDFS cluster? - MapReduce - [mail # user]
...hi,Joarder Kamal:    The following steps may help.    1. Stop your datanode daemon which you want to add a new HDD.    2. modify the data.dfs.dir property in hd...
   Author: Ling Kun, 2013-05-06, 02:52
Re: error while running TestDFSIO - MapReduce - [mail # user]
...I have got the same problem. And also need help.  Ling Kun   On Sat, Apr 20, 2013 at 8:35 AM, kaveh minooie  wrote:    http://www.lingcc.com...
   Author: Ling Kun, 2013-04-20, 01:14
[expand - 1 more] - Re: What is the difference between URI, Home Directory, Working Directory in FileSystem.java or HDFS - MapReduce - [mail # user]
...Dear  Daryn Sharp,    Your reply helps me a lot for  code reading of the HDFS and FileSystem interface.     Thanks.  yours, Ling Kun   On Thu, Apr 11,...
   Author: Ling Kun, 2013-04-19, 09:38
Any ideas about Performance optimization inside Hadoop framework based on the NFS-like Shared FileSystem - MapReduce - [mail # user]
...Dear all,     I am writing to ask for     1. Any ideas about Performance optimization inside Hadoop framework based on the NFS-like Shared FileSystem    2. And ...
   Author: Ling Kun, 2013-04-19, 09:18
Re: protect from accidental deletes - MapReduce - [mail # user]
.../trash is a good choice.   Ling Kun   On Tue, Apr 2, 2013 at 8:43 AM, Robert Hamilton  wrote:      http://www.lingcc.com...
   Author: Ling Kun, 2013-04-02, 01:10
[expand - 1 more] - Re: Why In-memory Mapoutput is necessary in ReduceCopier - MapReduce - [mail # dev]
...Dear Ravi and all,     Thanks very much for your kindly reply.    I am currently concern about whether it is possible to eliminate the HTTP GET method using some other wa...
   Author: Ling Kun, 2013-03-12, 01:42
Re: Buiding Hadoop code from source - MapReduce - [mail # user]
...Hi vikas:   Have you asked google first? I searched in Google using your keyword, and found the following link.     It may be helpful to you.   yours, Ling Kun   On ...
   Author: Ling Kun, 2013-03-01, 10:30
Is there a way to keep all intermediate files there after the MapReduce Job run? - MapReduce - [mail # user]
...Dear all,     In order to know more about the files creation and size when the job is running, I want to keep all the intermediate files there (job.xml, spillN.out, file.out, file....
   Author: Ling Kun, 2013-03-01, 10:14
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB