| --- |
| layout: toc |
| --- |
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| |
| ## Getting Started |
| * [Design](/docs/VERSION/design/index.html) |
| * [What is Druid?](/docs/VERSION/design/index.html#what-is-druid) |
| * [When should I use Druid](/docs/VERSION/design/index.html#when-to-use-druid) |
| * [Architecture](/docs/VERSION/design/index.html#architecture) |
| * [Datasources & Segments](/docs/VERSION/design/index.html#datasources-and-segments) |
| * [Query processing](/docs/VERSION/design/index.html#query-processing) |
| * [External dependencies](/docs/VERSION/design/index.html#external-dependencies) |
| * [Ingestion overview](/docs/VERSION/ingestion/index.html) |
| * [Quickstart](/docs/VERSION/tutorials/index.html) |
| * [Tutorial: Loading a file](/docs/VERSION/tutorials/tutorial-batch.html) |
| * [Tutorial: Loading stream data from Apache Kafka](/docs/VERSION/tutorials/tutorial-kafka.html) |
| * [Tutorial: Loading a file using Apache Hadoop](/docs/VERSION/tutorials/tutorial-batch-hadoop.html) |
| * [Tutorial: Loading stream data using HTTP push](/docs/VERSION/tutorials/tutorial-tranquility.html) |
| * [Tutorial: Querying data](/docs/VERSION/tutorials/tutorial-query.html) |
| * Further tutorials |
| * [Tutorial: Rollup](/docs/VERSION/tutorials/tutorial-rollup.html) |
| * [Tutorial: Configuring retention](/docs/VERSION/tutorials/tutorial-retention.html) |
| * [Tutorial: Updating existing data](/docs/VERSION/tutorials/tutorial-update-data.html) |
| * [Tutorial: Compacting segments](/docs/VERSION/tutorials/tutorial-compaction.html) |
| * [Tutorial: Deleting data](/docs/VERSION/tutorials/tutorial-delete-data.html) |
| * [Tutorial: Writing your own ingestion specs](/docs/VERSION/tutorials/tutorial-ingestion-spec.html) |
| * [Tutorial: Transforming input data](/docs/VERSION/tutorials/tutorial-transform-spec.html) |
| * [Clustering](/docs/VERSION/tutorials/cluster.html) |
| |
| ## Data Ingestion |
| * [Ingestion overview](/docs/VERSION/ingestion/index.html) |
| * [Schema Design](/docs/VERSION/ingestion/schema-design.html) |
| * [Data Formats](/docs/VERSION/ingestion/data-formats.html) |
| * [Tasks Overview](/docs/VERSION/ingestion/tasks.html) |
| * [Ingestion Spec](/docs/VERSION/ingestion/ingestion-spec.html) |
| * [Transform Specs](/docs/VERSION/ingestion/transform-spec.html) |
| * [Firehoses](/docs/VERSION/ingestion/firehose.html) |
| * [Schema Changes](/docs/VERSION/ingestion/schema-changes.html) |
| * [Batch File Ingestion](/docs/VERSION/ingestion/batch-ingestion.html) |
| * [Native Batch Ingestion](/docs/VERSION/ingestion/native_tasks.html) |
| * [Hadoop Batch Ingestion](/docs/VERSION/ingestion/hadoop.html) |
| * [Stream Ingestion](/docs/VERSION/ingestion/stream-ingestion.html) |
| * [Kafka Indexing Service (Stream Pull)](/docs/VERSION/development/extensions-core/kafka-ingestion.html) |
| * [Stream Push](/docs/VERSION/ingestion/stream-push.html) |
| * [Compaction](/docs/VERSION/ingestion/compaction.html) |
| * [Updating Existing Data](/docs/VERSION/ingestion/update-existing-data.html) |
| * [Deleting Data](/docs/VERSION/ingestion/delete-data.html) |
| * [Task Locking & Priority](/docs/VERSION/ingestion/locking-and-priority.html) |
| * [Task Reports](/docs/VERSION/ingestion/reports.html) |
| * [FAQ](/docs/VERSION/ingestion/faq.html) |
| * [Misc. Tasks](/docs/VERSION/ingestion/misc-tasks.html) |
| |
| ## Querying |
| * [Overview](/docs/VERSION/querying/querying.html) |
| * [Timeseries](/docs/VERSION/querying/timeseriesquery.html) |
| * [TopN](/docs/VERSION/querying/topnquery.html) |
| * [GroupBy](/docs/VERSION/querying/groupbyquery.html) |
| * [Time Boundary](/docs/VERSION/querying/timeboundaryquery.html) |
| * [Segment Metadata](/docs/VERSION/querying/segmentmetadataquery.html) |
| * [DataSource Metadata](/docs/VERSION/querying/datasourcemetadataquery.html) |
| * [Search](/docs/VERSION/querying/searchquery.html) |
| * [Select](/docs/VERSION/querying/select-query.html) |
| * [Scan](/docs/VERSION/querying/scan-query.html) |
| * Components |
| * [Datasources](/docs/VERSION/querying/datasource.html) |
| * [Filters](/docs/VERSION/querying/filters.html) |
| * [Aggregations](/docs/VERSION/querying/aggregations.html) |
| * [Post Aggregations](/docs/VERSION/querying/post-aggregations.html) |
| * [Granularities](/docs/VERSION/querying/granularities.html) |
| * [DimensionSpecs](/docs/VERSION/querying/dimensionspecs.html) |
| * [Context](/docs/VERSION/querying/query-context.html) |
| * [Multi-value dimensions](/docs/VERSION/querying/multi-value-dimensions.html) |
| * [SQL](/docs/VERSION/querying/sql.html) |
| * [Lookups](/docs/VERSION/querying/lookups.html) |
| * [Joins](/docs/VERSION/querying/joins.html) |
| * [Multitenancy](/docs/VERSION/querying/multitenancy.html) |
| * [Caching](/docs/VERSION/querying/caching.html) |
| * [Sorting Orders](/docs/VERSION/querying/sorting-orders.html) |
| * [Virtual Columns](/docs/VERSION/querying/virtual-columns.html) |
| |
| ## Design |
| * [Overview](/docs/VERSION/design/index.html) |
| * Storage |
| * [Segments](/docs/VERSION/design/segments.html) |
| * [Processes and Servers](/docs/VERSION/design/processes.html) |
| * [Coordinator](/docs/VERSION/design/coordinator.html) |
| * [Overlord](/docs/VERSION/design/overlord.html) |
| * [Broker](/docs/VERSION/design/broker.html) |
| * [Historical](/docs/VERSION/design/historical.html) |
| * [MiddleManager](/docs/VERSION/design/middlemanager.html) |
| * [Peons](/docs/VERSION/design/peons.html) |
| * [Realtime (Deprecated)](/docs/VERSION/design/realtime.html) |
| * Dependencies |
| * [Deep Storage](/docs/VERSION/dependencies/deep-storage.html) |
| * [Metadata Storage](/docs/VERSION/dependencies/metadata-storage.html) |
| * [ZooKeeper](/docs/VERSION/dependencies/zookeeper.html) |
| |
| ## Operations |
| * [API Reference](/docs/VERSION/operations/api-reference.html) |
| * [Coordinator](/docs/VERSION/operations/api-reference.html#coordinator) |
| * [Overlord](/docs/VERSION/operations/api-reference.html#overlord) |
| * [MiddleManager](/docs/VERSION/operations/api-reference.html#middlemanager) |
| * [Peon](/docs/VERSION/operations/api-reference.html#peon) |
| * [Broker](/docs/VERSION/operations/api-reference.html#broker) |
| * [Historical](/docs/VERSION/operations/api-reference.html#historical) |
| * [Including Extensions](/docs/VERSION/operations/including-extensions.html) |
| * [Data Retention](/docs/VERSION/operations/rule-configuration.html) |
| * [Metrics and Monitoring](/docs/VERSION/operations/metrics.html) |
| * [Alerts](/docs/VERSION/operations/alerts.html) |
| * [Updating the Cluster](/docs/VERSION/operations/rolling-updates.html) |
| * [Different Hadoop Versions](/docs/VERSION/operations/other-hadoop.html) |
| * [Performance FAQ](/docs/VERSION/operations/performance-faq.html) |
| * [Management UIs](/docs/VERSION/operations/management-uis.html) |
| * [Dump Segment Tool](/docs/VERSION/operations/dump-segment.html) |
| * [Insert Segment Tool](/docs/VERSION/operations/insert-segment-to-db.html) |
| * [Pull Dependencies Tool](/docs/VERSION/operations/pull-deps.html) |
| * [Recommendations](/docs/VERSION/operations/recommendations.html) |
| * [TLS Support](/docs/VERSION/operations/tls-support.html) |
| * [Password Provider](/docs/VERSION/operations/password-provider.html) |
| * [HTTP Compression](/docs/VERSION/operations/http-compression.html) |
| |
| ## Configuration |
| * [Configuration Reference](/docs/VERSION/configuration/index.html) |
| * [Recommended Configuration File Organization](/docs/VERSION/configuration/index.html#recommended-configuration-file-organization) |
| * [JVM Configuration Best Practices](/docs/VERSION/configuration/index.html#jvm-configuration-best-practices) |
| * [Common Configuration](/docs/VERSION/configuration/index.html#common-configurations) |
| * [Coordinator](/docs/VERSION/configuration/index.html#coordinator) |
| * [Overlord](/docs/VERSION/configuration/index.html#overlord) |
| * [MiddleManager & Peons](/docs/VERSION/configuration/index.html#middle-manager-and-peons) |
| * [Broker](/docs/VERSION/configuration/index.html#broker) |
| * [Historical](/docs/VERSION/configuration/index.html#historical) |
| * [Caching](/docs/VERSION/configuration/index.html#cache-configuration) |
| * [General Query Configuration](/docs/VERSION/configuration/index.html#general-query-configuration) |
| * [Configuring Logging](/docs/VERSION/configuration/logging.html) |
| |
| ## Development |
| * [Overview](/docs/VERSION/development/overview.html) |
| * [Libraries](/docs/VERSION/development/libraries.html) |
| * [Extensions](/docs/VERSION/development/extensions.html) |
| * [JavaScript](/docs/VERSION/development/javascript.html) |
| * [Build From Source](/docs/VERSION/development/build.html) |
| * [Versioning](/docs/VERSION/development/versioning.html) |
| * [Integration](/docs/VERSION/development/integrating-druid-with-other-technologies.html) |
| * Experimental Features |
| * [Overview](/docs/VERSION/development/experimental.html) |
| * [Approximate Histograms and Quantiles](/docs/VERSION/development/extensions-core/approximate-histograms.html) |
| * [Datasketches](/docs/VERSION/development/extensions-core/datasketches-extension.html) |
| * [Geographic Queries](/docs/VERSION/development/geo.html) |
| * [Router](/docs/VERSION/development/router.html) |
| * [Kafka Indexing Service](/docs/VERSION/development/extensions-core/kafka-ingestion.html) |
| |
| ## Misc |
| * [Druid Expressions Language](/docs/VERSION/misc/math-expr.html) |
| * [Papers & Talks](/docs/VERSION/misc/papers-and-talks.html) |
| * [Thanks](/thanks.html) |
