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Apache Druid v28.0 Documentation
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2023-11-23 09:01:03
Timeseries
TopN
GroupBy
Scan
Search
TimeBoundary
SegmentMetadata
DatasourceMetadata
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Apache Druid v28.0 Documentation
Apache Druid v27.0 Documentation
Apache Druid v26.0 Documentation
Apache Druid v25.0 Documentation
Apache Druid v24.0 Documentation
Apache Druid v0.23.0 Documentation
Apache Druid v0.22.1 Documentation
Apache Druid v0.22.0 Documentation
Apache Druid v0.21.1 Documentation
Apache Druid v0.21.0 Documentation
Apache Druid v0.20.2 Documentation
Apache Druid v0.20.1 Documentation
Apache Druid v0.20.0 Documentation
Apache Druid v0.19.0 Documentation
Apache Druid v0.18.1 Documentation
Apache Druid v0.18.0 Documentation
Apache Druid v0.17.1 Documentation
Getting started
Introduction to Apache Druid
Quickstart (local/)
Single server deployment
Clustered deployment
Tutorials
Load files using SQL
Load from Apache Kafka
Load from Apache Hadoop
Query data
Aggregate data with rollup
Theta sketches
Configure data retention
Update existing data
Compact segments
Deleting data
Write an ingestion spec
Transform input data
Convert ingestion spec to SQL
Run with Docker
Kerberized HDFS deep storage
Get to know Query view
Unnesting arrays
Query from deep storage
Jupyter Notebook tutorials
Docker for tutorials
JDBC connector
Design
Design
Segments
Processes and servers
Deep storage
Metadata storage
ZooKeeper
Ingestion
Overview
Ingestion concepts
Source input formats
Input sources
Schema model
Rollup
Partitioning
Task reference
SQL-based batch
SQL-based ingestion
Key concepts
Security
Examples
Reference
Known issues
Streaming
Apache Kafka ingestion
Apache Kafka supervisor
Apache Kafka operations
Amazon Kinesis
Classic batch
JSON-based batch
Hadoop-based
Ingestion spec reference
Schema design tips
Troubleshooting FAQ
Data management
Overview
Data updates
Data deletion
Schema changes
Compaction
Automatic compaction
Manual compaction
Querying
Druid SQL
Overview and syntax
Tips for writing good queries
Query from deep storage
SQL data types
Operators
Scalar functions
Aggregation functions
Window functions
Array functions
Multi-value string functions
JSON functions
All functions
SQL query context
SQL metadata tables
SQL query translation
Native queries
Query execution
Troubleshooting
Concepts
Datasources
Joins
Lookups
Multi-value dimensions
Arrays
Nested columns
Multitenancy
Query caching
Using query caching
Query context
Native query types
Timeseries
TopN
GroupBy
Scan
Search
TimeBoundary
SegmentMetadata
DatasourceMetadata
Native query components
Filters
Granularities
Dimensions
Aggregations
Post-aggregations
Expressions
Having filters (groupBy/)
Sorting and limiting (groupBy/)
Sorting (topN/)
String comparators
Virtual columns
Spatial filters
API reference
Overview
HTTP APIs
Druid SQL
SQL-based ingestion
JSON querying
Tasks
Supervisors
Retention rules
Data management
Automatic compaction
Lookups
Service status
Dynamic configuration
Legacy metadata
Java APIs
SQL JDBC driver
Configuration
Configuration reference
Extensions
Logging
Operations
Web console
Java runtime
Durable storage
Security
Security overview
User authentication and authorization
LDAP auth
Password providers
Dynamic Config Providers
TLS support
Performance tuning
Basic cluster tuning
Segment size optimization
Mixed workloads
HTTP compression
Automated metadata cleanup
Monitoring
Request logging
Metrics
Alerts
High availability
Rolling updates
Using rules to drop and retain data
Migrate from firehose
Working with different versions of Apache Hadoop
Misc
dump-segment tool
reset-cluster tool
insert-segment-to-db tool
pull-deps tool
Deep storage migration
Export Metadata Tool
Metadata Migration
Content for build.sbt
Development
Developing on Druid
Creating extensions
JavaScript functionality
Build from source
Versioning
Contribute to Druid docs
Experimental features
Misc
Papers
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