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Re: reuse cached files - Hadoop - [mail # user]
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...Hi, the urge So, you want to run multiple versions of a job (possibly different job parameters) and measure them relatively. Is that correct ? I can think of some options:...
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Author: Hemanth Yamijala,
2010-08-03, 04:33
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Re: sockets in hadoop - Hadoop - [mail # dev]
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...Hi, oop. I mean d All communication between Hadoop masters (JobTracker, NameNode), slaves (TaskTracker, DataNode) and clients happens using a custom RPC built over sockets. ...
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Author: Hemanth Yamijala,
2010-08-03, 04:25
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Re: jobtracker.jsp reports "GC overhead limit exceeded" - Hadoop - [mail # user]
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...Hi, .out files and only looked at .log file and didn't see any error msgs. now I opened the .out file and saw the following logged exception: Error: Java heap space eam.java:133)...
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Author: Hemanth Yamijala,
2010-08-02, 05:00
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Re: reuse cached files - Hadoop - [mail # user]
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...Hi, I may be able to answer this better if I understand the use case. If you need the same files for every job, why would you need to send them afresh each time ? If something is cach...
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Author: Hemanth Yamijala,
2010-08-02, 04:56
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Re: Parameters that can be set per job - Hadoop - [mail # user]
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...Hi, I'm almost certain there's no list that documents per-job settable parameters that well. From 0.21 onwards, I think a convention adopted is to name all job-related or task-related...
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Author: Hemanth Yamijala,
2010-07-30, 04:28
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Re: reuse cached files - Hadoop - [mail # user]
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...Hi, Cache files are reused across Jobs. From trunk onwards, they will be restricted to be reused across jobs of the same user, unless they are marked 'public' in which case they can b...
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Author: Hemanth Yamijala,
2010-07-30, 04:24
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Re: Hadoop Cluster Configuration - Hadoop - [mail # general]
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...Vaibhav, l, This is a complicated question to answer :-). There are certain configuration variables that need to be defined to be the same between the master and the slaves and s...
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Author: Hemanth Yamijala,
2010-07-28, 08:02
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Re: Setting jar for embedded Job (Hadoop 0.20.2) - Hadoop - [mail # user]
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...Hi, If you are planning to use job.setJarByClass, the files only need to be only on your classpath locally where you are running the application. You could look at o.a.h.mapred.JobCon...
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Author: Hemanth Yamijala,
2010-07-27, 04:32
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Re: Automatic tool for QA checks - Hadoop - [mail # dev]
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...Hi, mit Hudson (http://hudson-ci.org/) is the continuous integration system used. In the hadoop-common project, there is a script that is integrated with hudson that generates th...
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Author: Hemanth Yamijala,
2010-07-26, 11:17
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Re: Hadoop's datajoin - Hadoop - [mail # user]
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...Hi, ing to in/output . Can Datajoin is a contrib module. So, you will typically find it under contrib/datajoin/. The name could something slightly different - it could have a ver...
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Author: Hemanth Yamijala,
2010-07-12, 08:21
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