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[MAPREDUCE-2636] Scheduling over disks horizontally - MapReduce - [issue]
...Based on this message: http://mail-archives.apache.org/mod_mbox/hadoop-hdfs-user/201106.mbox/browserThe JT schedules tasks on nodes based on metadata it gets from the NN. The namenode does n...
http://issues.apache.org/jira/browse/MAPREDUCE-2636    Author: Evert Lammerts, 2012-12-21, 08:17
[expand - 3 more] - RE: Pending reducers - MapReduce - [mail # user]
...Alright, thanks, we're already busy rolling out the config for the capacity  scheduler. Still, interesting behavior. The fifo scheduler looks at the lo ad on the cores? Seems unnecessar...
   Author: Evert Lammerts, 2012-08-14, 20:45
getLocalCacheFiles - MapReduce - [mail # user]
...Hi all,  DistributedCache.getLocalCacheFiles does not seem to work correctly in 0.20 .205.0. In my Mapper I need a local filesystem path on the cluster nodes. g etLocalCacheFiles is not...
   Author: Evert Lammerts, 2012-08-08, 10:10
Lecture: Large-scale data processing with Hadoop MapReduce - MapReduce - [mail # user]
...Who:            Dr. Jimmy Lin, University of Maryland, When:           2 December 2011, 11.00 - 12.00 Where:  Amolf, 2nd floor, Sc...
   Author: Evert Lammerts, 2011-11-17, 14:28
getMapOutput, EOFException, IllegalStateException - MapReduce - [mail # user]
...When Reducers start running during a certain job (mapred.reduce.slowstart.c ompleted.maps = 0.8) it takes about 20 minutes before the DN stopd reacti ng. This seems to be due to a number of ...
   Author: Evert Lammerts, 2011-05-16, 14:59
Map 100%, Reduce 99.99%? - MapReduce - [mail # user]
...Hi all,  Why do we every now and then see a job remaining in Running state with no m ore Mappers or Reducers running, while the reduce progress tells us it's 99 .99% done? Might this be...
   Author: Evert Lammerts, 2011-05-11, 11:11
[expand - 1 more] - RE: Could not obtain block - MapReduce - [mail # user]
...I didn't mention it but the complete filesystem is reported healthy by fsck . I'm guessing that the java.io.EOFException indicates a problem caused by  the load of the job.  Any id...
   Author: Evert Lammerts, 2011-03-09, 16:09
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