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Re: Locks in HDFS - Hadoop - [mail # user]
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...Hi Abhishek, I fail to understand what you mean by that; but HDFS generally has no client-exposed file locking on reads. There's leases for preventing multiple writers to a single file...
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Author: Harsh J,
2013-02-22, 16:09
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Re: Rookie to Hadoop - Hadoop - [mail # general]
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...Hi Ganesh, First off, this is the wrong list to ask user questions. The right list is [EMAIL PROTECTED], as is instructed on http://hadoop.apache.org/mailing_lists.html. If any text th...
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Author: Harsh J,
2013-02-22, 08:02
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Re: Locks in HDFS - Hadoop - [mail # user]
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...HDFS does not have such a client-side feature, but your applications can use Apache Zookeeper to coordinate and implement this on their own - it can be used to achieve distributed locking. W...
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Author: Harsh J,
2013-02-22, 06:03
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Re: How to add another file system in Hadoop - Hadoop - [mail # user]
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...What Hemanth points to (fs.TYPE.impl, i.e. fs.cdmi.impl being set to the classname of the custom FS impl.) is correct for the 1.x releases. In 2.x and ahead, the class for a URI is auto-disc...
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Author: Harsh J,
2013-02-21, 12:53
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Re: Piping output of hadoop command - Hadoop - [mail # user]
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...Hi, The command you're looking for is not -copyToLocal (it doesn't really emit the file, which you seem to need here), but rather a simple -cat: Something like the below would ma...
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Author: Harsh J,
2013-02-18, 18:01
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Re: [ANNOUNCE] hadoop-2.0.3-alpha released! - Hadoop - [mail # general]
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...Thanks for doing this Arun, and the extra notes as well! Karthik - Looks like http://hadoop.apache.org/docs/ doesn't seem to have 2.0.3 docs yet. I think the location of putting down d...
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Author: Harsh J,
2013-02-15, 18:00
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Re: configure mapreduce to work with pem files. - Hadoop - [mail # user]
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...Hi, Nodes in Hadoop do not communicate using SSH. See http://wiki.apache.org/hadoop/FAQ#Does_Hadoop_require_SSH.3F On Wed, Feb 13, 2013 at 5:16 PM, Pedro Sá da Costa wrote:...
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Author: Harsh J,
2013-02-13, 12:58
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Re: Anyway to load certain Key/Value pair fast? - Hadoop - [mail # general]
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...Please do not use the general@ lists for any user-oriented questions. Please redirect them to [EMAIL PROTECTED] lists, which is where the user community and questions lie. I've moved y...
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Author: Harsh J,
2013-02-13, 05:29
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Re: The method setMapperClass(Class<? extends Mapper>) in the type Job is not applicable for the arguments - Hadoop - [mail # user]
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...Your import line of Mapper has the issue. It is imported as below, which can probably be removed as it is unnecessary: import org.apache.hadoop.mapreduce.Mapper.Context; But you ...
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Author: Harsh J,
2013-02-09, 18:35
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Re: The method setMapperClass(Class<? extends Mapper>) in the type Job is not applicable for the arguments - Hadoop - [mail # user]
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...Whatever "csatAnalysis.MapClass" the compiler picked up, it appears to not be extending the org.apache.hadoop.mapreduce.Mapper class. From your snippets it appears that you have it all defin...
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Author: Harsh J,
2013-02-09, 18:09
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