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Re: hadoop streaming using a java program as mapper - Hadoop - [mail # user]
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...Yes, I did, the myMapper.sh is executed, the problem is inside this myMapper.sh, it calls a java program named myJava, the myJava did not get executed on slaves, and I shipped myJava.class t...
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Author: Boyu Zhang,
2012-05-02, 05:25
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hadoop streaming using a java program as mapper - Hadoop - [mail # user]
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...Hi All, I am in a little bit strange situation, I am using Hadoop streaming to run a bash shell program myMapper.sh, and in the myMapper.sh, it calls a java program, then a R program, ...
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Author: Boyu Zhang,
2012-05-02, 05:17
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the time format of the log files - Hadoop - [mail # user]
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...Hi all, I need to parse the _log/history file to get the running time for map and reduce phases. And the log is in this format: Task TASKID="task_201109071413_0001_m_000000" TASK...
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Author: Boyu Zhang,
2011-09-07, 21:30
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Re: HOD exception: java.io.IOException: No valid local directories in property: mapred.local.dir - Hadoop - [mail # user]
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...Thanks a lot for the comments, but I set the mapred.local.dir to /tmp which is a dir on every local machies. Still I got the same error, and I use the same conf file, with 3 nodes (I h...
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Author: Boyu Zhang,
2011-04-13, 17:51
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HOD exception: java.io.IOException: No valid local directories in property: mapred.local.dir - Hadoop - [mail # user]
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...Hi All, I was trying to run the program using HOD on a cluster, when I allocate using 5 nodes, it runs fine, but when I allocate using 6 nodes, everytime I tried to run a program, I ge...
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Author: Boyu Zhang,
2011-04-11, 23:48
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Corrupted input data to map - Hadoop - [mail # user]
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...Hi all, I am running a program with input 1 million lines of data, among the 1 million, 5 or 6 lines data are corrupted. The way the are corrupted is: in the position which a float num...
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Author: Boyu Zhang,
2010-10-15, 21:02
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Re: nodes with different memory sizes - Hadoop - [mail # user]
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...Hi Hemanth, Thank you for the hints and my apology for the late reply. I the map/reduce program when I said process. Since the application is memory bounded, so I want the MR pro...
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Author: Boyu Zhang,
2010-10-15, 20:58
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Re: nodes with different memory sizes - Hadoop - [mail # user]
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...Hi Pablo, thank you for the reply. Actually I forgot to mention that I am using HOD to provision a hadoop and hdfs on the cluster. There is only one configuration file when I tried to ...
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Author: Boyu Zhang,
2010-10-08, 18:41
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nodes with different memory sizes - Hadoop - [mail # user]
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...Dear All, I am trying to run a memory hungry program in a cluster with 6 nodes, among the 6 nodes, 2 of them have 32 G memory, and the rest have 16 G memory. I am wondering is there a ...
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Author: Boyu Zhang,
2010-10-08, 16:17
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Re: Passing information to Map Reduce - Hadoop - [mail # user]
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...Hi Pete, Maybe you can set a job configuration entry to the value you want, and get that entry value in the map program. Boyu On Fri, Aug 13, 2010 at 3:55 PM, Pete Tyler wr...
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Author: Boyu Zhang,
2010-08-13, 20:22
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