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1.8 KiB
1.8 KiB
| id | title |
|---|---|
| middlemanager | MiddleManager service |
Configuration
For Apache Druid MiddleManager service configuration, see MiddleManager and Peons.
For basic tuning guidance for the MiddleManager service, see Basic cluster tuning.
HTTP endpoints
For a list of API endpoints supported by the MiddleManager, please see the Service status 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