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YARN-6110. Fix opportunistic containers documentation. (Akira Ajisaka via asuresh)

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Arun Suresh 2017-01-19 06:14:28 -08:00
parent 85e4961f60
commit 7e8d32147c
1 changed files with 4 additions and 2 deletions
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/OpportunisticContainers.md
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@ -19,8 +19,8 @@ Opportunistic Containers
* [Quick Guide](#Quick_Guide)
* [Main Goal](#Main_Goal)
* [Enabling Opportunistic Containers](#Enabling_Opportunistic_Containers)
* [Running a Sample Job](Running_a_Sample_Job)
* [Opportunistic Containers in Web UI](Opportunistic_Containers_in_Web_UI)
* [Running a Sample Job](#Running_a_Sample_Job)
* [Opportunistic Containers in Web UI](#Opportunistic_Containers_in_Web_UI)
* [Overview](#Overview)
* [Container Execution Types](#Container_Execution_Types)
* [Execution of Opportunistic Containers](#Execution_of_Opportunistic_Containers)
@ -71,6 +71,7 @@ By default, allocation of opportunistic containers is performed centrally throug
###<a name="Running_a_Sample_Job"></a>Running a Sample Job
The following command can be used to run a sample pi map-reduce job, executing 40% of mappers using opportunistic containers (substitute `3.0.0-alpha2-SNAPSHOT` below with the version of Hadoop you are using):
```
$ hadoop jar hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/mapreduce/hadoop-mapreduce-examples-3.0.0-alpha2-SNAPSHOT.jar pi -Dmapreduce.job.num-opportunistic-maps-percent="40" 50 100
```
@ -81,6 +82,7 @@ By changing the value of `mapreduce.job.num-opportunistic-maps-percent` in the a
###<a name="Opportunistic_Containers_in_Web_UI"></a>Opportunistic Containers in Web UI
When opportunistic container allocation is enabled, the following new columns can be observed in the Nodes page of the Web UI (`rm-address:8088/cluster/nodes`):
* Running Containers (O): number of running opportunistic containers on each node;
* Mem Used (O): Total memory used by opportunistic containers on each node;
* VCores Used (O): Total CPU virtual cores used by opportunistic containers on each node;