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Re: Trouble in running MapReduce application - MapReduce - [mail # user]
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...Can you try this ? Pick a class like WordCount from your package and execute this command: javap -classpath -verbose org.myorg.Wordcount | grep version. For e.g. here's wha...
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Author: Hemanth Yamijala,
2013-02-23, 13:05
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Re: map reduce and sync - MapReduce - [mail # user]
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...Could you please clarify, are you opening the file in your mapper code and reading from there ? Thanks Hemanth On Friday, February 22, 2013, Lucas Bernardi wrote: ...
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Author: Hemanth Yamijala,
2013-02-23, 07:37
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Re: OutOfMemoryError during reduce shuffle - MapReduce - [mail # user]
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...There are a few tweaks In configuration that may help. Can you please look at http://hadoop.apache.org/docs/r1.0.4/mapred_tutorial.html#Shuffle%2FReduce+Parameters Also, since you have...
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Author: Hemanth Yamijala,
2013-02-21, 01:41
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Re: ClassNotFoundException in Main - MapReduce - [mail # user]
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...Thats because the error is not related to the packaging. As mentioned in my last mail, downgrade the java version used for compiling your code from Jdk 7 to Jdk 6. If you are using an IDE, i...
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Author: Hemanth Yamijala,
2013-02-19, 17:05
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Re: ClassNotFoundException in Main - MapReduce - [mail # user]
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...I am not sure if that will actually work, because the class is defined to be in the org.myorg package. I suggest you repackage to reflect the right package structure. Also, the error y...
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Author: Hemanth Yamijala,
2013-02-19, 16:40
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Re: ClassNotFoundException in Main - MapReduce - [mail # user]
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...Have you used the Api setJarByClass in your main program? http://hadoop.apache.org/docs/r1.0.4/api/org/apache/hadoop/mapreduce/Job.html#setJarByClass(java.lang.Class) On Tuesday,...
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Author: Hemanth Yamijala,
2013-02-19, 16:02
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Re: Database insertion by HAdoop - MapReduce - [mail # user]
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...Sqoop can be used to export as well. Thanks Hemanth On Tuesday, February 19, 2013, Masoud wrote: ...
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Author: Hemanth Yamijala,
2013-02-19, 15:52
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Re: Database insertion by HAdoop - MapReduce - [mail # user]
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...Hi, You could consider using sqoop. http://sqoop.apache.org/ there seemed to be a SQL connector from Microsoft. http://www.microsoft.com/en-gb/download/details.aspx?id=27584 Than...
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Author: Hemanth Yamijala,
2013-02-19, 01:14
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Re: How to understand DataNode usages ? - MapReduce - [mail # user]
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...This seems to be related to the % used capacity at a datanode. The values are computed for all the live datanodes, and the range / central limits / deviations are computed based on a sorted ...
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Author: Hemanth Yamijala,
2013-02-15, 04:10
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Re: Java submit job to remote server - MapReduce - [mail # user]
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...Can you please include the complete stack trace and not just the root. Also, have you set fs.default.name to a hdfs location like hdfs://localhost:9000 ? Thanks Hemanth On Wednes...
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Author: Hemanth Yamijala,
2013-02-13, 01:16
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