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[MAPREDUCE-4970] Child tasks (try to) create security audit log files - MapReduce - [issue]
...After HADOOP-8552, MR child tasks will attempt to create security audit log files with their user names.  On an insecure cluster, this has no effect, but on a secure cluster, log4j will...
http://issues.apache.org/jira/browse/MAPREDUCE-4970    Author: Sandy Ryza, 2013-05-15, 06:16
Re: Hadoop schedulers! - MapReduce - [mail # user]
...Hi Rahul,  You're right that the schedulers have evolved to support many of the same features.  To your second question, I haven't looked in detail at the FIFO or capacity schedule...
   Author: Sandy Ryza, 2013-05-13, 18:55
[MAPREDUCE-5238] TestDistCacheEmulation.testGenerateDistCacheData is failing in trunk - MapReduce - [issue]
...Tests run: 4, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 33.794 sec <<< FAILURE!testGenerateDistCacheData(org.apache.hadoop.mapred.gridmix.TestDistCacheEmulation)  Time ...
http://issues.apache.org/jira/browse/MAPREDUCE-5238    Author: Sandy Ryza, 2013-05-10, 17:55
[MAPREDUCE-5219] JobStatus#getJobPriority changed to JobStatus#getPriority in MR2 - MapReduce - [issue]
...We should change it back for compatibility...
http://issues.apache.org/jira/browse/MAPREDUCE-5219    Author: Sandy Ryza, 2013-05-08, 23:55
[MAPREDUCE-4933] MR1 final merge asks for length of file it just wrote before flushing it - MapReduce - [issue]
...createKVIterator in ReduceTask contains the following code:          try {            Merger.writeFile(rIter, writer, reporte...
http://issues.apache.org/jira/browse/MAPREDUCE-4933    Author: Sandy Ryza, 2013-05-06, 05:15
Re: Why could not find finished jobs in yarn.resourcemanager.webapp.address? - MapReduce - [mail # user]
...This shouldn't be asked on the dev lists, so putting mapreduce-dev and hdfs-dev in the bcc.  Have you made sure you're not using the local job runner?  Did you restart the resource...
   Author: Sandy Ryza, 2013-05-03, 01:37
[MAPREDUCE-5134] Default settings cause LocalJobRunner to OOME - MapReduce - [issue]
...If I run a job using the local job runner with vanilla settings, I get an out of memory error.  This seems to be because the default client memory maximum is 128 MB, and the default io....
http://issues.apache.org/jira/browse/MAPREDUCE-5134    Author: Sandy Ryza, 2013-04-30, 01:22
Re: Hadoop MapReduce High Availability - MapReduce - [mail # dev]
...Hi Augusto,  In Hadoop 2, ResourceManager HA is being worked on under YARN-128 and YARN-149.  There's a design doc for RM recovery on the latter.  Hadoop 1's MapReduce high av...
   Author: Sandy Ryza, 2013-04-29, 16:57
Re: Versions - Confusion - MapReduce - [mail # dev]
...The 2.0 series contains security as well.  -Sandy   On Sat, Apr 27, 2013 at 5:30 AM, Suresh S  wrote:  ...
   Author: Sandy Ryza, 2013-04-27, 17:30
Re: Automatically mapping a job submitted by a particular user to a specific hadoop map-reduce queue - MapReduce - [mail # user]
...Hi Sagar,  This capability currently does not exist in the fair scheduler (or other schedulers, as far as I know), but a JIRA has been filed recently that addresses a similar need. &nbs...
   Author: Sandy Ryza, 2013-04-25, 06:41
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