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Re: Scheduler question - Hadoop - [mail # user]
...Hi John,  YARN schedulers handle this with the concept of "reservations".  Scheduling decisions occur on node heartbeats.  When a node that is full heartbeats, the next applic...
   Author: Sandy Ryza, 2013-09-09, 10:17
Re: question about fair scheduler - Hadoop - [mail # user]
...That's right that the other 2 apps will end up getting 10 resources each, but as more resources become released, eventually the cluster will converge to a fair state.  I.e. if the first...
   Author: Sandy Ryza, 2013-08-23, 09:14
[HADOOP-9672] Upgrade Avro dependency to 1.7.4 - Hadoop - [issue]
...Hadoop still depends on Avro-1.5.3, when the latest release is 1.7.4.  I've observed this cause problems when using Hadoop 2 with Crunch, which uses a more recent version of Avro....
http://issues.apache.org/jira/browse/HADOOP-9672    Author: Sandy Ryza, 2013-08-10, 14:04
[HADOOP-9675] use svn:eol-style native for html to prevent line ending issues - Hadoop - [issue]
...hadoop-common-project/hadoop-common/src/main/docs/releasenotes.htmlshows up as modified even though I haven't touched it, and I can't check it out or reset to a previous version to make that...
http://issues.apache.org/jira/browse/HADOOP-9675    Author: Sandy Ryza, 2013-08-10, 14:04
Re: Java 7 and Hadoop - Hadoop - [mail # dev]
...How do we go about setting up builds on jdk7?  Couldn't figure out how to do it on Jenkins, so I'm assuming it either requires PMC or Infra?  -Sandy   On Thu, Jul 25, 2013 at ...
   Author: Sandy Ryza, 2013-08-02, 17:55
Re: Contributing... - Hadoop - [mail # dev]
...Hi James,  In terms of areas of active development, there's still quite a bit to do in MapReduce and YARN. ApplicationHistoryServer (YARN-321), Rolling Restart (YARN-666), and work-pres...
   Author: Sandy Ryza, 2013-07-30, 22:57
Re: [VOTE] change bylaws to add "branch committers" - Hadoop - [mail # general]
...+1 (non-binding)  Sandy   On Thu, Jul 25, 2013 at 12:25 PM, Thomas Graves wrote:  ...
   Author: Sandy Ryza, 2013-07-25, 20:25
Re: Parameter 'yarn.nodemanager.resource.cpu-cores' does not work - Hadoop - [mail # user]
...Hi Sam,  LinuxResourceCalculatorPlugin and DominantResourceCalculator control separate things.  The former is for a NodeManager to calculate the resource usage of a container proce...
   Author: Sandy Ryza, 2013-07-23, 00:17
Re: Running hadoop for processing sources in full sky maps - Hadoop - [mail # user]
...Hi Andrea,  For copying the full sky map to each node, look up the distributed cache.  It works by placing the sky map file on HDFS and each task will pull it down when needed. &nb...
   Author: Sandy Ryza, 2013-07-13, 18:05
[HADOOP-9661] Allow metrics sources to be extended - Hadoop - [issue]
...My use case is to create an FSQueueMetrics that extends QueueMetrics and includes some additional fair-scheduler-specific information....
http://issues.apache.org/jira/browse/HADOOP-9661    Author: Sandy Ryza, 2013-07-11, 15:09
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