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Re: Help with adjusting Hadoop configuration files - Hadoop - [mail # user]
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...Yeah it will increase performance by reducing number of mappers and making single mapper to use more memory . So the value depends upon the application and RAM available . For your use case ...
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Author: madhu phatak,
2011-06-21, 11:02
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Re: Append to Existing File - Hadoop - [mail # user]
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...Please refer to this discussion http://search-hadoop.com/m/rnG0h1zCZcL1/Re%253A+HDFS+File+Appending+URGENT&subj=Fw+HDFS+File+Appending+URGENT On Tue, Jun 21, 2011 at 4:23 PM, Eric Char...
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Author: madhu phatak,
2011-06-21, 10:58
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Re: Hadoop Runner - Hadoop - [mail # user]
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...Define Ur own custom Record Reader and its efficient . On Sun, Jun 12, 2011 at 10:12 AM, Harsh J wrote: ...
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Author: madhu phatak,
2011-06-21, 10:50
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Re: nomenclature - Hadoop - [mail # user]
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...Master and slaves comes from the old distributed system terminologies . Since Hadoop also is a distributed system it uses that type of terminology On Mon, Jun 13, 2011 at 6:36 AM, Mark...
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Author: madhu phatak,
2011-06-21, 10:47
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Re: Append to Existing File - Hadoop - [mail # user]
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...Its not stable . There are some bugs pending . According one of the disccusion till date the append is not ready for production. On Tue, Jun 14, 2011 at 12:19 AM, jagaran das wrote: &n...
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Author: madhu phatak,
2011-06-21, 10:36
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Re: Handling external jars in EMR - Hadoop - [mail # user]
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...Its better to merge the library with ur code . Other wise u have to copy the library to every lib folder of HADOOP in every node cluster. libjars is not working for me also . I used maven sh...
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Author: madhu phatak,
2011-06-21, 10:30
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Re: ClassNotFoundException while running quick start guide on Windows. - Hadoop - [mail # user]
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...I think the jar have some issuses where its not able to read the Main class from manifest . try unjar the jar and see in Manifest.xml what is the main class and then run as follows bi...
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Author: madhu phatak,
2011-06-21, 10:24
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Re: automatic monitoring the utilization of slaves - Hadoop - [mail # user]
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...Its not possible since the slave will don't have knowledge of other slaves , so though master started the job , it may be running in other slaves . So in program if your running jobs using J...
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Author: madhu phatak,
2011-06-21, 10:16
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Re: Heap Size is 27.25 MB/888.94 MB - Hadoop - [mail # user]
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...Its related with the amount of memory available to Java Virtual machine that is created for hadoop jobs. On Fri, Jun 17, 2011 at 1:18 AM, Harsh J wrote: ...
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Author: madhu phatak,
2011-06-21, 10:12
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Re: HDFS File Appending - Hadoop - [mail # user]
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...HDFS doesnot support Appending i think . I m not sure about pig , if you are using Hadoop directly you can zip the files and use zip as the input the jobs. On Fri, Jun 17, 2011 at 6:56...
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Author: madhu phatak,
2011-06-21, 10:11
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