Hadoop纱线:获取可用队列的列表



是否有一种方法可以从命令行中获取所有可用纱线队列的列表,而无需诉诸于解析capacity-scheduler.xml文件?

我正在使用Hadoop版本2.7.2

您可以使用hadoop内置mapred命令行工具

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
======================

它提供了一个简单而良好的输出,并具有层次结构

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 top 等级队列。

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

为您提供有关调度程序/队列的各种信息,因此使用jq可以从中获取任何信息。

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