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Re: Error while extracting hadoop tar - MapReduce - [mail # user]
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...It means the file is either truncated or not downloaded completely. Warm Regards, Tariq cloudfront.blogspot.com On Thu, May 16, 2013 at 10:17 PM, Raj Hadoop wrote: ...
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Author: Mohammad Tariq,
2013-05-16, 17:01
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Re: Configuring SSH - is it required? for a psedo distriburted mode? - MapReduce - [mail # user]
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...Hello Raj, ssh is actually 2 things : 1- ssh : The command we use to connect to remote machines - the client. 2- sshd : The daemon that is running on the server and allo...
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Author: Mohammad Tariq,
2013-05-16, 16:02
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Re: Number of records in an HDFS file - MapReduce - [mail # user]
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...Agree with Shahab. Warm Regards, Tariq cloudfront.blogspot.com On Tue, May 14, 2013 at 12:32 AM, Shahab Yunus wrote: ...
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Author: Mohammad Tariq,
2013-05-13, 19:07
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Re: Number of records in an HDFS file - MapReduce - [mail # user]
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...If it is just counting the no. of records in a file then how about having a short 3 liner : LOGS= LOAD 'log'; LOGS_GROUP= GROUP LOGS ALL; LOG_COUNT = FOREACH LOGS_GROUP GENERATE COUNT(LOGS);...
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Author: Mohammad Tariq,
2013-05-13, 18:36
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Re: Install Hadoop on Linux Pseudo Distributed Mode - Root Required? - MapReduce - [mail # user]
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...Hello Raj, Install in what sense?Are you planning to use Apache's package?If that is the case you just have to download and unzip it. And you don't need root privilege f...
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Author: Mohammad Tariq,
2013-05-13, 14:47
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Re: Hadoop noob question - MapReduce - [mail # user]
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...This is what I would say : The number of maps is decided as follows. Since it’s a good idea to get each map to copy a reasonable amount of data to minimize overheads in task setup, eac...
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Author: Mohammad Tariq,
2013-05-12, 13:42
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Re: Hadoop noob question - MapReduce - [mail # user]
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...I had said that if you use distcp to copy data *from localFS to HDFS* then you won't be able to exploit parallelism as entire file is present on a single machine. So no multiple TTs. P...
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Author: Mohammad Tariq,
2013-05-12, 12:55
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Re: Hadoop noob question - MapReduce - [mail # user]
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...No. distcp is actually a mapreduce job under the hood. Warm Regards, Tariq cloudfront.blogspot.com On Sun, May 12, 2013 at 6:00 PM, Rahul Bhattacharjee wrote: ...
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Author: Mohammad Tariq,
2013-05-12, 12:37
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Re: Need help about task slots - MapReduce - [mail # user]
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...Hahaha..I think we could continue this over there.. Warm Regards, Tariq cloudfront.blogspot.com On Sun, May 12, 2013 at 6:04 PM, Rahul Bhattacharjee wrote: ...
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Author: Mohammad Tariq,
2013-05-12, 12:36
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Re: Need help about task slots - MapReduce - [mail # user]
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...@Rahul : I'm sorry as I am not aware of any such document. But you could use distcp for local to HDFS copy : *bin/hadoop distcp file:///home/tariq/in.txt hdfs://localhost:9...
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Author: Mohammad Tariq,
2013-05-12, 12:09
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