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Re: Who splits the file into blocks - HDFS - [mail # user]
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...Dear Sai Sai, "Hadoop, the definitive guide" says regarding default replica placement: - first replica is placed on the same node as the client (lowest bandwidth penalty). - seco...
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Author: Jens Scheidtmann,
2013-03-31, 16:30
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Re: error copying file from local to hadoop fs - HDFS - [mail # user]
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...Dear Ravi, 2013/3/29 Ravi Chandran What do you mean with standalone mode? "standalone" in the sense of hadoop docs uses it means, no daemons are running. Everything ...
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Author: Jens Scheidtmann,
2013-03-29, 20:29
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Re: Understanding Sys.output from mapper & partitioner - HDFS - [mail # user]
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...Hallo Sai, the interesting bits are, how your job is configured. Depending on how you defined the input to the MR-job, e.g. as a text file you might get this result. Unfortunately, you...
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Author: Jens Scheidtmann,
2013-03-29, 15:56
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Re: 2.0.3-alpha in pseudodristributed mode: How to force examples to run on yarn? (SOLVED) - HDFS - [mail # user]
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...Ok, got it: http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-common/SingleCluster.html didn't tell to set mapreduce.framework.name yarn ...
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Author: Jens Scheidtmann,
2013-03-19, 19:23
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2.0.3-alpha in pseudodristributed mode: How to force examples to run on yarn? - HDFS - [mail # user]
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...Dear all, I finally have set up 2.0.3-alpha in pseudo distributed mode as per http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/SingleCluster.html This is e...
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Author: Jens Scheidtmann,
2013-03-19, 08:33
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Re: On a small cluster can we double up namenode/master with tasktrackers? - HDFS - [mail # user]
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...David, You didn't look at how resource intensive your map/reduce jobs are. Best regards, Jens...
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Author: Jens Scheidtmann,
2013-03-19, 08:12
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Re: question about scheduler rack awareness - HDFS - [mail # user]
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...Dear Jin, you wrote: 10 blocks most fastest ? hadoop tries hard to run the map tasks on the node, where the data is stored. "Hadoop: The Definitive Guide" has some UML Sequence d...
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Author: Jens Scheidtmann,
2013-03-19, 08:07
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Re: CDH4 installation along with MRv1 from tarball - HDFS - [mail # user]
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...Rohit, What are you trying to achieve with two different complete versions of hadoop? Thanks, Jens 2013/3/18 rohit sarewar ...
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Author: Jens Scheidtmann,
2013-03-19, 07:47
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Re: executing files on hdfs via hadoop not possible? is JNI/JNA a reasonable solution? - HDFS - [mail # user]
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...Hi Julian, Replying to your original question. 2013/3/17 Julian Bui There's support in the API for distributing native libraries or executables and creating a symli...
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Author: Jens Scheidtmann,
2013-03-18, 18:44
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