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Re: Scheduler Questions - MapReduce - [mail # dev]
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...`yarn.app.mapreduce.am.scheduler.heartbeat.interval-ms` parameter is defaulted to to 2000ms (DEFAULT_MR_AM_TO_RM_HEARTBEAT_INTERVAL_MS). So, the AM sends a Heart Beat every 2000ms to the RM....
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Author: Praveen Sripati,
2011-11-26, 04:40
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Regarding Hadoop and API - MapReduce - [mail # dev]
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...Hi, There had been some mails regarding Hadoop and MPI and the JIRA for the same is MAPREDUCE-2911. Does it make sense to use MPI for all the interprocess communication in Hadoop using...
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Author: Praveen Sripati,
2011-11-25, 16:04
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Incremental builds in 0.23 using Maven - MapReduce - [mail # dev]
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...Hi, Does Maven support incremental builds? After `svn up', the build is taking time even without any updates from svn. Thanks, Praveen...
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Author: Praveen Sripati,
2011-11-22, 06:13
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Re: Distributing our jars to all machines in a cluster - MapReduce - [mail # user]
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...Hi, Here are the different ways of distributing 3rd party jars with the application. http://www.cloudera.com/blog/2011/01/how-to-include-third-party-libraries-in-your-map-reduce-...
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Author: Praveen Sripati,
2011-11-20, 02:25
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Re: Different ways of configuring the memory to the TaskTracker child process (Mapper and Reduce Tasks) - MapReduce - [mail # user]
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...Hi, Can someone please clarify me on the below query? Thanks, Praveen On Sun, Nov 6, 2011 at 8:47 PM, Praveen Sripati wrote: ...
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Author: Praveen Sripati,
2011-11-08, 01:29
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Different ways of configuring the memory to the TaskTracker child process (Mapper and Reduce Tasks) - MapReduce - [mail # user]
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...Hi, What is the difference between setting the mapred.job.map.memory.mb and mapred.child.java.opts using -Xmx to control the maximum memory used by a Mapper and Reduce task? Which one ...
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Author: Praveen Sripati,
2011-11-06, 15:17
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Re: Streaming question. - MapReduce - [mail # user]
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...Dan, It is a known bug (https://issues.apache.org/jira/browse/MAPREDUCE-1888) which has been identified in 0.21.0 release. Which Hadoop release are you using? Thanks, Praveen &nb...
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Author: Praveen Sripati,
2011-11-03, 05:46
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Specifying the MR jar file - MapReduce - [mail # user]
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...Hi, What is the difference between specifying the jar file using JobConf API and the 'hadoop jar' command? JobConf conf = new JobConf(getConf(), getClass()); bin/hadoop jar...
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Author: Praveen Sripati,
2011-10-12, 04:58
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Running MRv1 jobs through Eclipse - MapReduce - [mail # dev]
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...Hi, I am trying to run MRv1 jobs in Eclipse. I have been able to run in Local (Standalone) Mode, but not in Pseudo-Distributed Mode. In the Pseudo-Distributed Mode, the below exc...
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Author: Praveen Sripati,
2011-10-04, 10:06
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Re: How to stop a MR Job when a certain condition is met? - MapReduce - [mail # user]
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...Arun, Let's say there is 1PB of data in HDFS and the requirement is to look for a particular sequence in the whole data. If the sequence is found then the MR job could be aborted. Ther...
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Author: Praveen Sripati,
2011-10-01, 05:06
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