mapreduce speculative execution

2015-08-02 Thread Shushant Arora
Does Mapper's cleanup or close method gets called for map tasks which get killed due to speculative execution ? And when does a task is considered completed for killing duplicate task which was started because of speculative execution- after cleanup or close of faster is executed or before that

Re: total vcores per node containers in yarn

2015-07-18 Thread Shushant Arora
running? Recent changes have made YARN to auto-compute this via hardware detection, by default (rather than the 8 default). On Fri, Jul 17, 2015 at 11:31 PM Shushant Arora shushantaror...@gmail.com wrote: In Yarn there is a setting to specify no of vcores that can be allocated to containers

total vcores per node containers in yarn

2015-07-17 Thread Shushant Arora
In Yarn there is a setting to specify no of vcores that can be allocated to containers. yarn.nodemanager.resource.cpu-vcores In my cluster's nodes yarn-site.xml, this property is not specified. But total vcores displayed on RM's web page for the nodes are different than the default(8). Is there

suppress empty part files output

2015-05-12 Thread Shushant Arora
while using multipleoutputs we use , LazyOutputFormat.setOutputFormatClass(job, TextOutputFormat.class); to suppress default empty part files from reducers. Whats the syntax of using this in map-reduce action of oozie ?or in in xml file for ToolsRuner. Is

max number of application master in YARN

2015-04-30 Thread Shushant Arora
Is there any configuration in MR2 and YARN to limit concurrent max applications by setting max limit on ApplicationMasters in the cluster?

Re: max number of application master in YARN

2015-04-30 Thread Shushant Arora
Thanks!! Is it for capacity scheduler only. Or applicable to fair scheduler also? On Fri, May 1, 2015 at 12:22 AM, Prashant Kommireddi prash1...@gmail.com wrote: Take a look at yarn.scheduler.capacity.maximum-am-resource-percent On Thu, Apr 30, 2015 at 11:38 AM, Shushant Arora