druid/docs/design/middlemanager.md
Peter Marshall f665a0c077
Docs - Add links to Basic Tuning guide in process pages (#12741)
Added link to the relevant section of the Basic Cluster Tuning page on each process page.

This is in order to improve access to this information, which is not easy to find through search or nav.
2022-08-16 18:42:44 +05:30

1.7 KiB

id title
middlemanager MiddleManager Process

Configuration

For Apache Druid MiddleManager Process Configuration, see Indexing Service Configuration.

For basic tuning guidance for the MiddleManager process, see Basic cluster tuning.

HTTP endpoints

For a list of API endpoints supported by the MiddleManager, please see the API reference.

Overview

The MiddleManager process is a worker process that executes submitted tasks. Middle Managers forward tasks to Peons that run in separate JVMs. The reason we have separate JVMs for tasks is for resource and log isolation. Each Peon is capable of running only one task at a time, however, a MiddleManager may have multiple Peons.

Running

org.apache.druid.cli.Main server middleManager