Jackhammer

Generates and pushes random event data into Kafka to be used for load testing the performance of Druid's Kafka indexing service.

Build

mvn package

Extract

tar xzf target/jackhammer-1.0-SNAPSHOT-bin.tar.gz

Run

jackhammer-1.0-SNAPSHOT/jackhammer --help

Notes

• Make sure you have sufficient event generators / Kafka brokers / bandwidth so that your results actually reflect the performance of the Kafka indexing tasks.
• It may be beneficial to run the event generators first to pre-load Kafka with data before starting up the Kafka supervisor and running the load test.
• The supervisor status endpoint GET /druid/indexer/v1/supervisor/<supervisorId>/status is useful for determining ingestion rate by comparing the currentOffset values vs. time.