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Re: [Newbie] How to make Multi Node Cluster from Single Node Cluster - Hadoop - [mail # user]
...You can follow the documents for 0.20.x . It is almost  same for 1.0.x as well.   Regards Bejoy KS  Sent from handheld, please excuse typos.  From: Alpha Bagus Sunggono &...
   Author: Bejoy KS, 2012-06-14, 10:34
Re: set the mapred.map.tasks.speculative.execution=false, but it is not useful. - Hadoop - [mail # user]
...Hi   If your intension is controlling the number of attempts every task make, then the property to be tweaked is  mapred.map.max.attempts  The default value is 4, for no map t...
   Author: Bejoy KS, 2012-06-12, 13:10
Re: updating datanode config files on namenode recovery - Hadoop - [mail # user]
...Hi Sumadhur,  The easier approach is to make the hostname of the new NN same as the old one, else you'll have to update the new one on config files across cluster.   Regards Bejoy ...
   Author: Bejoy KS, 2012-05-02, 03:26
Re: reducers and data locality - Hadoop - [mail # user]
...Hi Mete  A custom Paritioner class can control the flow of keys to the desired reducer. It gives you more control on which key to which reducer.   Regards Bejoy KS  Sent from ...
   Author: Bejoy KS, 2012-04-27, 09:24
Re: Parts of a file as input - Hadoop - [mail # user]
...Hi Franc         Adding on to Harsh's response. If you Partition your data accordingly in Hive you can easily switch on and off full data scans. Partitions and sub partit...
   Author: Bejoy KS, 2012-03-27, 06:46
[expand - 1 more] - Re: Zero Byte file in HDFS - Hadoop - [mail # user]
...Hi Abshiek         Merging happens as a last stage of hive jobs. Say your hive query is translated to n MR jobs when you enable merge you can set a size that is needed to...
   Author: Bejoy KS, 2012-03-26, 21:48
[expand - 1 more] - Re: Number of retries - Hadoop - [mail # user]
...Hi Mohit      To add on, duplicates won't be there if your output is written to a hdfs file. Because if one attempt of a task is completed only that output file is copied to t...
   Author: Bejoy KS, 2012-03-22, 20:00
Re: Input split for a streaming job! - Hadoop - [mail # user]
...Hi Raj           Is your Streaming job using WholeFileInput Format or some Custom Input Format that reads files as a whole? If that is the case then this is the expe...
   Author: Bejoy KS, 2011-11-11, 09:06
Re: running sqoop on hadoop cluster - Hadoop - [mail # user]
...Hi Firantika            HDFS is the underlying file system and the meta data to HDFS is stored in Name Node and the actual data blocks are in DataNode. You can ...
   Author: Bejoy KS, 2011-10-21, 10:58
[expand - 1 more] - Re: execute hadoop job from remote web application - Hadoop - [mail # user]
...Hi Oleg           I haven't tried out a scenario like you mentioned. But I think there shouldn't be any issue in submitting a job that has some dependent classes whi...
   Author: Bejoy KS, 2011-10-18, 14:34
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