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Re: Mappers vs. Map tasks - Hadoop - [mail # user]
...You are really confused :) Please read this :http://developer.yahoo.com/hadoop/tutorial/module4.html#closerhttp://wiki.apache.org/hadoop/HowManyMapsAndReduces* Warm Regards_**∞_** Shashwat S...
   Author: shashwat shriparv, 2014-02-25, 06:09
Re: Getting following error in JT logs while running MR jobs - Hadoop - [mail # user]
...Check if you are having correct permission for the user through which you are running the job.    * Warm Regards_**∞_* *Shashwat Shriparv* Big-Data Engineer(HPC) [image: http://www...
   Author: shashwat shriparv, 2013-12-16, 10:55
Re: println ststements on hadoop - Hadoop - [mail # user]
...It will not be displayed in consol as the job is submitted to hadoop, and once it is submitted you dont have control through terminal, meanwhile you can execute hadoop job command giving job...
   Author: shashwat shriparv, 2013-12-16, 10:44
Re: how to handle the corrupt block in HDFS? - Hadoop - [mail # user]
...How many nodes you have? and if fsck is giving you healthy status no need to worry. with the replication 10 what i may conclude that you have 10 listed datanodes so 10 replicated jar files f...
   Author: shashwat shriparv, 2013-12-10, 10:30
Re: 2 Map tasks running for a small input file - Hadoop - [mail # user]
...just try giving -Dmapred.tasktracker.map.tasks.maximum=1 on the command line and check how many map task its running. and also set this in mapred-site.xml and check.  *Thanks & Regards ...
   Author: shashwat shriparv, 2013-09-26, 12:37
Re: master node abnormal ,help - Hadoop - [mail # user]
...Your datanode may not be running verify that.    *Thanks & Regards    *  ∞ Shashwat Shriparv    On Wed, Jun 26, 2013 at 2:55 PM, Devaraj k  wrote: &nb...
   Author: shashwat shriparv, 2013-06-26, 10:20
Re: Changing the replication factor of particular file - Hadoop - [mail # dev]
...hadoop dfs -setrep 1 filename  Add -r if you want to change replication recursively.  Usage: hdfs dfs -setrep [-R]    hdfs dfs -setrep -w 3 -R /user/hadoop/dir1  -w ...
   Author: shashwat shriparv, 2013-05-08, 11:22
Re: Hadoop Debian Package - Hadoop - [mail # user]
...Ye its is asking for file:/// instead of hdfs:// just check if it is taking setting configuration from other location...    ∞ Shashwat Shriparv    On Sun, Mar 17, 2013 at...
   Author: shashwat shriparv, 2013-03-17, 17:57
Re: Decommissioning Nodes in Production Cluster. - Hadoop - [mail # user]
...On Tue, Feb 12, 2013 at 11:43 PM, Robert Molina wrote:    this is best way to remove data node from a cluster. you have done the right thing.........    ∞ Shashwat Shripa...
   Author: shashwat shriparv, 2013-02-12, 18:22
Re: Prolonged safemode - Hadoop - [mail # user]
...Check integrity of the file system, and check the replication factor, by mistake if default is left as 3 or so.  if you have hbase configured check hbck if everything is fine with the c...
   Author: shashwat shriparv, 2013-01-20, 10:30
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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