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Re: Any reference for upgrade hadoop from 1.x to 2.2 - MapReduce - [mail # user]
...Not that I'm aware of.  -Sandy   On Thu, Dec 5, 2013 at 10:11 PM, Nirmal Kumar wrote:  ...
   Author: Sandy Ryza, 2013-12-06, 07:16
Re: Perfect configuration setting - MapReduce - [mail # user]
...Hi Geelong,  Check out Todd Lipcon's presentation on tuning MapReduce performance: http://www.slideshare.net/cloudera/mr-perf  -Sandy   On Mon, Dec 2, 2013 at 11:14 PM, Geelon...
   Author: Sandy Ryza, 2013-12-03, 08:26
Re: problems of FairScheduler in hadoop2.2.0 - MapReduce - [mail # user]
...Hi,  Can you share the contents of your fair-scheduler.xml?  If you submit just a single job, does it run?  What do you see if you go to /ws/v1/cluster/scheduler?  -Sandy...
   Author: Sandy Ryza, 2013-11-27, 08:32
Re: Limit on total jobs running using fair scheduler - MapReduce - [mail # user]
...Unfortunately, this is not possible in the MR1 fair scheduler without setting the jobs for individual pools.  In MR2, fair scheduler hierarchical queues will allow setting maxRunningApp...
   Author: Sandy Ryza, 2013-11-19, 22:12
[expand - 4 more] - Re: Allocating Containers on a particular Node in Yarn - MapReduce - [mail # user]
...Yeah, you're right, I meant when locality relaxation is turned off.  I'm not super familiar with the capacity scheduler (more familiar with the fair scheduler), so maybe someone with kn...
   Author: Sandy Ryza, 2013-11-14, 21:33
[expand - 1 more] - Re: Next releases - MapReduce - [mail # dev]
...Here are few patches that I put into 2.2.1 and are minimally invasive, but I don't think are blockers:    YARN-305. Fair scheduler logs too many "Node offered to app" messages. &nb...
   Author: Sandy Ryza, 2013-11-13, 18:38
[MAPREDUCE-5592] Backport MAPREDUCE-1119 (stack traces on task timeout) in branch-1 - MapReduce - [issue]
...MAPREDUCE-1119 dumps stack traces on a task timeout, making it easier this difficult case easier to debug.  This made it into 0.21, but never into branch-1, and the backport very very d...
http://issues.apache.org/jira/browse/MAPREDUCE-5592    Author: Sandy Ryza, 2013-11-05, 00:18
[MAPREDUCE-4680] Job history cleaner should only check timestamps of files in old enough directories - MapReduce - [issue]
...Job history files are stored in yyyy/mm/dd folders.  Currently, the job history cleaner checks the modification date of each file in every one of these folders to see whether it's past ...
http://issues.apache.org/jira/browse/MAPREDUCE-4680    Author: Sandy Ryza, 2013-10-29, 13:04
Re: question about preserving data locality in MapReduce with Yarn - MapReduce - [mail # user]
...Hi Ricky,  The input splits contain the locations of the blocks they cover.  The AM gets the information from the input splits and submits requests for those location.  Each c...
   Author: Sandy Ryza, 2013-10-29, 02:21
[MAPREDUCE-5599] JobHistoryServer unnecessarily copies all jobs on each query - MapReduce - [issue]
...Instead, in CachedHistoryStorage, we should only copy jobs that will be returned....
http://issues.apache.org/jira/browse/MAPREDUCE-5599    Author: Sandy Ryza, 2013-10-28, 23:40
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB