February 2019
Beginner to intermediate
544 pages
14h 36m
English
Content preview from Mastering Hadoop 3
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Node Manager REST API
The Node Manager is responsible for running containers and executing tasks inside containers. The Node Manager API provides information about particular nodes, applications running on that node, and their containers. Let's look at each API and their uses:
- Retrieve Node Manager information: YARN exposes the REST API to get information about any particular node. The response contains information such as node ID, node hostname, health report, container memory, and core information, for example:
curl -X GET http://nodemanagerIP:port/ws/v1/node/info
An example would look like the following:
curl -X GET http://10.20.28.19:8042/ws/v1/node/info
- Application information on Node Manager: We can also get the information about ...
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