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Re: any workaround for huge dncp_block_verification.log? - Hadoop - [mail # user]
...I read in somewhere that Harsh replied there was this bug in CDH4.1 and hesuggested to upgrade to 4.2http://grokbase.com/t/cloudera/cdh-user/1338erq9zg/killing-my-hdd-with-dncp-block-verific...
   Author: Nitin Pawar, 2014-04-24, 06:03
Re: Which version to learn ? - Hadoop - [mail # user]
...Its a good idea to start with Hadoop 1.2It is stable though it differs from hadoop 2.x.You will get lots of your questions answered on hadoop 1.x by simplesearch. For hadoop 2.x it is still ...
   Author: Nitin Pawar, 2014-04-21, 08:12
Re: Task or job tracker seems not working? - Hadoop - [mail # user]
...you need to allocate sufficient memory to datanodes as well.Also make sure that none of the network cards on your datanodes have turnedbad.Most of the time the error you saw comes when there...
   Author: Nitin Pawar, 2014-04-17, 11:18
Re: How multiple input files are processed by mappers - Hadoop - [mail # user]
...1. In real production environment do we copy these 10 files in hdfs under afolder one by one. If this is the case then how many mappers do we specify10 mappers. And do we use put command of ...
   Author: Nitin Pawar, 2014-04-14, 14:12
Re: IOException when using "dfs -put" - Hadoop - [mail # user]
...Datanodes available: 0 (0 total, 0 dead)see this .. that means there is no datanode is connected with namenode.can you check the namenode log and see its up and runningafter that check the d...
   Author: Nitin Pawar, 2014-04-04, 19:37
Re: ecxecution of imported source code - Hadoop - [mail # user]
...you want to import the project into eclipse or you have got the code ineclipse and now want to do a build ?On Tue, Mar 25, 2014 at 4:22 PM, Avinash Kujur  wrote:Nitin Pawar ...
   Author: Nitin Pawar, 2014-03-25, 10:58
Re: Shutdown message while formatting hdfs - Hadoop - [mail # user]
...actual namenode format workflow is1) start up namenode2) wipe out old namespace info (namenode only)3) create new namespace4) create and save fsimage5) create and save edit log6) shut down t...
   Author: Nitin Pawar, 2014-03-24, 11:35
Re: About Different versions of Hadoop in a single system - Hadoop - [mail # user]
...technically yes ... practically advised not to implement soyou need to be very careful with the configuration you did and not to sharebetween setups. a simple mistake and it will cause very ...
   Author: Nitin Pawar, 2014-03-23, 17:57
Re: history viewer issue - Hadoop - [mail # user]
...check the errorCaused by: java.io.IOException: History directory/home/cloudera/1/_logs/historydoesnot existcreate that directory and change the ownership to the user running historyserverOn ...
   Author: Nitin Pawar, 2014-03-18, 12:06
Re: Partitions in Hive - Hadoop - [mail # user]
...partition in hive is done on the column value and not on the sub portion ofcolumn value.If you want to separate data based on the first character then createanother column to store that valu...
   Author: Nitin Pawar, 2014-03-06, 18:30
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