druid/docs/content/design/peons.md

48 lines
1.7 KiB
Markdown
Raw Normal View History

---
layout: doc_page
title: "Peons"
---
<!--
~ Licensed to the Apache Software Foundation (ASF) under one
~ or more contributor license agreements. See the NOTICE file
~ distributed with this work for additional information
~ regarding copyright ownership. The ASF licenses this file
~ to you under the Apache License, Version 2.0 (the
~ "License"); you may not use this file except in compliance
~ with the License. You may obtain a copy of the License at
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing,
~ software distributed under the License is distributed on an
~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
~ KIND, either express or implied. See the License for the
~ specific language governing permissions and limitations
~ under the License.
-->
# Peons
2018-09-04 15:54:41 -04:00
### Configuration
For Peon Configuration, see [Peon Query Configuration](../configuration/index.html#peon-query-configuration) and [Additional Peon Configuration](../configuration/index.html#additional-peon-configuration).
### HTTP Endpoints
For a list of API endpoints supported by the Peon, please see the [Peon API reference](../operations/api-reference.html#peon).
Peons run a single task in a single JVM. MiddleManager is responsible for creating Peons for running tasks.
Peons should rarely (if ever for testing purposes) be run on their own.
2018-09-04 15:54:41 -04:00
### Running
The Peon should very rarely ever be run independent of the MiddleManager unless for development purposes.
```
org.apache.druid.cli.Main internal peon <task_file> <status_file>
```
The task file contains the task JSON object.
The status file indicates where the task status will be output.