Apache Kafka ingestion Kafka support Load the Kafka indexing service Define a supervisor spec JSON input format supervisor spec example Kafka input format supervisor spec exampl...

OpenTSDB Emitter Introduction Configuration Druid to OpenTSDB Event Converter OpenTSDB Emitter To use this Apache Druid extension, make sure to include opentsdb-emitter ex...

OpenTSDB Emitter Introduction Configuration Druid to OpenTSDB Event Converter OpenTSDB Emitter To use this Apache Druid extension, include opentsdb-emitter in the extension...

Introduction Configuration Druid to OpenTSDB Event Converter To use this Apache Druid extension, include opentsdb-emitter in the extensions load list. Introduction This ext...

Native queries Available queries Aggregation queries Metadata queries Other queries Which query type should I use? Query cancellation Query errors Authentication and authoriz...

Ingestion troubleshooting FAQ Batch Ingestion Druid ingested my events but they are not in my query results Where do my Druid segments end up after ingestion? My stream ingest i...

Build from source Prerequisites Installing Java and Maven: Downloading the source: Building the source Build from source You can build Apache Druid directly from source. Pl...

Build from source Prerequisites Installing Java and Maven: Downloading the source: Building the source Build from source You can build Apache Druid directly from source. Pl...

Query caching Cache types Per-segment caching Whole-query caching Where to enable caching Performance considerations for caching Scenarios where caching does not increase query...

InfluxDB Emitter Introduction Configuration InfluxDB Line Protocol InfluxDB Emitter To use this Apache Druid extension, make sure to include druid-influxdb-emitter extensi...