druid/docs/content/toc.md

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toc

Getting Started

• Design
  • What is Druid?
  • When should I use Druid?
  • Architecture
  • Datasources & Segments
  • Query processing
  • External dependencies
  • Ingestion overview
• Getting Started
  • Single-server Quickstart
    • Tutorial: Loading a file from local disk
    • Tutorial: Loading stream data from Apache Kafka
    • Tutorial: Loading a file using Apache Hadoop
    • Tutorial: Loading stream data using HTTP push
    • Tutorial: Querying data
    • Further tutorials
      • Tutorial: Rollup
      • Tutorial: Configuring retention
      • Tutorial: Updating existing data
      • Tutorial: Compacting segments
      • Tutorial: Deleting data
      • Tutorial: Writing your own ingestion specs
      • Tutorial: Transforming input data
  • Clustering
  • Further examples
    • Single-server deployment
    • Clustered deployment

Data Ingestion

• Ingestion overview
• Schema Design
• Data Formats
• Tasks Overview
• Ingestion Spec
  • Transform Specs
  • Firehoses
• Schema Changes
• Batch File Ingestion
  • Native Batch Ingestion
  • Hadoop Batch Ingestion
• Stream Ingestion
  • Kafka Indexing Service (Stream Pull)
  • Stream Push
• Compaction
• Updating Existing Data
• Deleting Data
• Task Locking & Priority
• Task Reports
• FAQ
• Misc. Tasks

Querying

• Druid SQL
• Native queries
  • Timeseries
  • TopN
  • GroupBy
  • Time Boundary
  • Segment Metadata
  • DataSource Metadata
  • Search
  • Scan
  • Select
  • Components
    • Datasources
    • Filters
    • Aggregations
    • Post Aggregations
    • Granularities
    • DimensionSpecs
    • Sorting Orders
    • Virtual Columns
    • Context
• Concepts
  • Multi-value dimensions
  • Lookups
  • Joins
  • Multitenancy
  • Caching
  • Geographic Queries (experimental)

Design

• Overview
• Storage
  • Segments
• Servers and Processes
  • Master server
    • Coordinator
    • Overlord
  • Query server
    • Broker
    • Router (optional; experimental)
  • Data server
    • Historical
    • MiddleManager
      • Peons
    • Indexer (optional; experimental)
• Dependencies
  • Deep Storage
  • Metadata Storage
  • ZooKeeper

Operations

• Management UIs
• Including Extensions
• Data Retention
• High Availability
• Updating the Cluster
• Metrics and Monitoring
• Alerts
• Different Hadoop Versions
• HTTP Compression
• API Reference
  • Coordinator
  • Overlord
  • MiddleManager
  • Peon
  • Broker
  • Historical
• Tuning and Recommendations
  • Basic Cluster Tuning
  • General Recommendations
  • JVM Best Practices
• Tools
  • Dump Segment Tool
  • Insert Segment Tool
  • Pull Dependencies Tool
• Security
  • TLS Support
  • Password Provider

Configuration

• Configuration Reference
• Recommended Configuration File Organization
• Common Configuration
• Processes
  • Coordinator
  • Overlord
  • MiddleManager & Peons
  • Historical
  • Broker
• Caching
• General Query Configuration
• Configuring Logging

Development

• Overview
• Libraries
• Extensions
• JavaScript
• Build From Source
• Versioning
• Integration
• Experimental Features

Misc

• Druid Expressions Language
• Papers & Talks
• Thanks