Apache Druid v28.0 Documentation
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Convert ingestion spec to SQL
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2023-11-23 08:58:08
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API reference
HTTP APIs
Data management
Lookups
Retention rules
Service status
JSON querying
Dynamic configuration
Legacy metadata
Druid SQL
Supervisors
SQL-based ingestion
Tasks
Automatic compaction
Java APIs
SQL JDBC driver
Overview
Configuration
Logging
Configuration reference
Extensions
Data management
Overview
Data updates
Compaction
Automatic compaction
Manual compaction
Data deletion
Schema changes
Design
Metadata storage
Design
ZooKeeper
Segments
Processes and servers
Deep storage
Development
Developing on Druid
Experimental features
Build from source
Versioning
Creating extensions
Contribute to Druid docs
JavaScript functionality
Getting started
Single server deployment
Introduction to Apache Druid
Quickstart (local/)
Clustered deployment
Ingestion
Troubleshooting FAQ
Schema design tips
Ingestion spec reference
Overview
Classic batch
Hadoop-based
JSON-based batch
Ingestion concepts
Partitioning
Schema model
Rollup
Source input formats
Task reference
Input sources
SQL-based batch
Key concepts
SQL-based ingestion
Security
Known issues
Examples
Reference
Streaming
Apache Kafka ingestion
Amazon Kinesis
Apache Kafka operations
Apache Kafka supervisor
Misc
Papers
Operations
Rolling updates
Durable storage
Using rules to drop and retain data
Java runtime
Working with different versions of Apache Hadoop
Migrate from firehose
High availability
Web console
Misc
insert-segment-to-db tool
pull-deps tool
dump-segment tool
reset-cluster tool
Export Metadata Tool
Metadata Migration
Content for build.sbt
Deep storage migration
Monitoring
Request logging
Alerts
Metrics
Performance tuning
HTTP compression
Mixed workloads
Automated metadata cleanup
Basic cluster tuning
Segment size optimization
Security
Password providers
LDAP auth
TLS support
Security overview
Dynamic Config Providers
User authentication and authorization
Querying
Troubleshooting
Query execution
Native queries
Concepts
Multi-value dimensions
Arrays
Datasources
Lookups
Using query caching
Query context
Joins
Query caching
Nested columns
Multitenancy
Druid SQL
Multi-value string functions
Scalar functions
Aggregation functions
SQL query context
JSON functions
Tips for writing good queries
Overview and syntax
Array functions
All functions
Query from deep storage
SQL data types
Operators
Window functions
SQL query translation
SQL metadata tables
Native query components
Virtual columns
Sorting and limiting (groupBy/)
Sorting (topN/)
String comparators
Granularities
Dimensions
Having filters (groupBy/)
Spatial filters
Filters
Expressions
Aggregations
Post-aggregations
Native query types
DatasourceMetadata
Timeseries
TopN
Scan
TimeBoundary
SegmentMetadata
GroupBy
Search
Tutorials
Aggregate data with rollup
Deleting data
Configure data retention
Jupyter Notebook tutorials
Write an ingestion spec
Theta sketches
Run with Docker
Load from Apache Hadoop
JDBC connector
Load from Apache Kafka
Compact segments
Get to know Query view
Convert ingestion spec to SQL
Kerberized HDFS deep storage
Docker for tutorials
Transform input data
Unnesting arrays
Query from deep storage
Query data
Load files using SQL
Update existing data
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