YARN-4098. Document ApplicationPriority feature. Contributed by Rohith Sharma K S
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/ad997fab Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/ad997fab Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/ad997fab Branch: refs/heads/HDFS-1312 Commit: ad997fab67c65071a745a30afaa4e7d63fe40ec2 Parents: 5273413 Author: Jian He <[email protected]> Authored: Tue Dec 29 16:51:55 2015 -0800 Committer: Jian He <[email protected]> Committed: Tue Dec 29 16:51:55 2015 -0800 ---------------------------------------------------------------------- hadoop-yarn-project/CHANGES.txt | 2 ++ .../src/site/markdown/CapacityScheduler.md | 25 ++++++++++++++++++++ .../src/site/markdown/YarnCommands.md | 2 ++ 3 files changed, 29 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/ad997fab/hadoop-yarn-project/CHANGES.txt ---------------------------------------------------------------------- diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt index ecd7c9c..ceb3791 100644 --- a/hadoop-yarn-project/CHANGES.txt +++ b/hadoop-yarn-project/CHANGES.txt @@ -660,6 +660,8 @@ Release 2.8.0 - UNRELEASED YARN-4290. Add -showDetails option to YARN Nodes CLI to print all nodes reports information. (Sunil G via wangda) + YARN-4098. Document ApplicationPriority feature. (Rohith Sharma K S via jianhe) + OPTIMIZATIONS YARN-3339. TestDockerContainerExecutor should pull a single image and not http://git-wip-us.apache.org/repos/asf/hadoop/blob/ad997fab/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/CapacityScheduler.md ---------------------------------------------------------------------- diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/CapacityScheduler.md b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/CapacityScheduler.md index 9227b1f..cd98dc0 100644 --- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/CapacityScheduler.md +++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/CapacityScheduler.md @@ -24,6 +24,7 @@ Hadoop: Capacity Scheduler * [Queue Properties](#Queue_Properties) * [Other Properties](#Other_Properties) * [Reviewing the configuration of the CapacityScheduler](#Reviewing_the_configuration_of_the_CapacityScheduler) + * [Setup for application priority](#Setup_for_application_priority.) * [Changing Queue Configuration](#Changing_Queue_Configuration) Purpose @@ -71,6 +72,8 @@ The `CapacityScheduler` supports the following features: * **Queue Mapping based on User or Group** - This feature allows users to map a job to a specific queue based on the user or group. +* **Priority Scheduling** - This feature allows applications to be submitted and scheduled with different priorities. Higher integer value indicates higher priority for an application. Currently Application priority is supported only for FIFO ordering policy. + Configuration ------------- @@ -201,6 +204,28 @@ Example: * The */scheduler* web-page should show the resource usages of individual queues. +###Setup for application priority. + + Application priority works only along with FIFO ordering policy. Default ordering policy is FIFO. + + Default priority for an application can be at cluster level and queue level. + + * Cluster-level priority : Any application that is submitted with a priority is greater then cluster max priority then application priority will be reset with cluster-max priority. + $HADOOP_HOME/etc/hadoop/yarn-site.xml is the configuration file for cluster-max priority. + +| Property | Description | +|:---- |:---- | +| `yarn.cluster.max-application-priority` | Defines maximum application priority in a cluster. | + + * Leaf Queue-level priority : Each leaf queue provides default priority by the administrator. If application is not submitted with any priority, then default priority of the queue will be taken in account. + $HADOOP_HOME/etc/hadoop/capacity-scheduler.xml is the configuration file for queue-level priority. + +| Property | Description | +|:---- |:---- | +| `yarn.scheduler.capacity.root.<leaf-queue-path>.default-application-priority` | Defines default application priority in a leaf queue. | + +**Note:** Priority of an application will not be changed when application is moved to different queue. + Changing Queue Configuration ---------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/ad997fab/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnCommands.md ---------------------------------------------------------------------- diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnCommands.md b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnCommands.md index eb0123e..4d617db 100644 --- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnCommands.md +++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnCommands.md @@ -67,11 +67,13 @@ Usage: `yarn application [options] ` | COMMAND\_OPTIONS | Description | |:---- |:---- | +| -appId \<ApplicationId\> | Specify Application Id to be operated | | -appStates \<States\> | Works with -list to filter applications based on input comma-separated list of application states. The valid application state can be one of the following: Â ALL, NEW, NEW\_SAVING, SUBMITTED, ACCEPTED, RUNNING, FINISHED, FAILED, KILLED | | -appTypes \<Types\> | Works with -list to filter applications based on input comma-separated list of application types. | | -list | Lists applications from the RM. Supports optional use of -appTypes to filter applications based on application type, and -appStates to filter applications based on application state. | | -kill \<ApplicationId\> | Kills the application. | | -status \<ApplicationId\> | Prints the status of the application. | +| -updatePriority \<Priority\> | Update priority of an application. ApplicationId can be passed using 'appId' option. | Prints application(s) report/kill application
