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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.
1.7 KiB
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