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Re: fail and kill all tasks without killing job. - Hadoop - [mail # user]
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...Hi Jay Did you try hadoop job -kill-task ? And is that not working as desired? Regards Bejoy KS Sent from handheld, please excuse typos. From: jay vyas D...
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Author: Bejoy KS,
2012-07-20, 22:23
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Re: Hive/Hdfs Connector - Hadoop - [mail # user]
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...Hi Sandeep You can connect to hdfs from a remote machine if that machine is reachable from the cluster, and you have the hadoop jars and right hadoop configuration files. Similar...
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Author: Bejoy KS,
2012-07-05, 15:12
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Re: Setting number of mappers according to number of TextInput lines - Hadoop - [mail # user]
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...Hi Ondrej You can use NLineInputFormat with n set to 10. From: Ondřej Klimpera To: [EMAIL PROTECTED] ReplyTo: [EMAIL PROTECTED] Subject: Setting number of mappers according to nu...
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Author: Bejoy KS,
2012-06-16, 09:27
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Re: [Newbie] How to make Multi Node Cluster from Single Node Cluster - Hadoop - [mail # user]
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...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 &...
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Author: Bejoy KS,
2012-06-14, 10:34
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Re: set the mapred.map.tasks.speculative.execution=false, but it is not useful. - Hadoop - [mail # user]
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...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...
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Author: Bejoy KS,
2012-06-12, 13:10
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Re: updating datanode config files on namenode recovery - Hadoop - [mail # user]
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...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 ...
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Author: Bejoy KS,
2012-05-02, 03:26
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Re: reducers and data locality - Hadoop - [mail # user]
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...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 ...
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Author: Bejoy KS,
2012-04-27, 09:24
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Re: Parts of a file as input - Hadoop - [mail # user]
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...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...
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Author: Bejoy KS,
2012-03-27, 06:46
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Re: Zero Byte file in HDFS - Hadoop - [mail # user]
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...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...
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Author: Bejoy KS,
2012-03-26, 21:48
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Re: Zero Byte file in HDFS - Hadoop - [mail # user]
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...Hi Abshikek I can propose a better solution. Enable merge in hive. So that the smaller files would be merged to at lest the hdfs block size(your choice) and would ...
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Author: Bejoy KS,
2012-03-26, 21:27
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