Hadoop YARN：获取可用队列的列表

Question

有没有一种方法可以从命令行获取所有可用的YARN队列的列表，而无需求助于分析capacity-scheduler.xml文件？

我正在使用Hadoop 2.7.2版

Answer 1

一种方法是使用ResourceManager REST API，例如：

curl '<resourcemanager_host>:<http_port>/ws/v1/cluster/scheduler' | jq '.scheduler.schedulerInfo.queues.queue[] | .queueName’

将列出所有顶级队列。

curl '<resourcemanager_host>:<http_port>/ws/v1/cluster/scheduler' | jq .

为您提供有关调度程序/队列的所有信息，因此jq您可以使用其中的任何信息。

Answer 2

You can use also the hadoop builtin mapred command-line tool

me@here.com$ mapred queue -list
======================
Queue Name : root.tenant1
Queue State : running
Scheduling Info : Capacity: 0.0, MaximumCapacity: UNDEFINED, CurrentCapacity: 0.0
    ======================
    Queue Name : root.tenant1.default
    Queue State : running
    Scheduling Info : Capacity: 0.0, MaximumCapacity: UNDEFINED, CurrentCapacity: 0.0
    ======================
    Queue Name : root.tenant1.users
    Queue State : running
    Scheduling Info : Capacity: 0.0, MaximumCapacity: UNDEFINED, CurrentCapacity: 0.0
======================
Queue Name : root.tenant2
Queue State : running
Scheduling Info : Capacity: 0.0, MaximumCapacity: UNDEFINED, CurrentCapacity: 0.0
    ======================
    Queue Name : root.tenant2.default
    Queue State : running
    Scheduling Info : Capacity: 0.0, MaximumCapacity: UNDEFINED, CurrentCapacity: 0.0
    ======================
    Queue Name : root.tenant2.users
    Queue State : running
    Scheduling Info : Capacity: 0.0, MaximumCapacity: UNDEFINED, CurrentCapacity: 0.0
======================

it provides a nice output with hierarchy