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Ingestion rate is around 2000 rows per second..

If the log snippet is from

var/druid/indexing-logs/

then most likely its the peon launched by the middle manager . I am assuming you are using realtime ingestion Some things to check: 1. Do you have lookups enabled. If yes, are the the tasks gating on look ups being loaded. 2. Do you have enough query threads inside the tasks to serve the queries https://druid.apache.org/docs/latest/operations/metrics.html#jetty 3. Whats your task duration.

you can also enable request logging if you want to see the specific queries that time out: https://druid.apache.org/docs/latest/operations/request-logging.html

Yes I will try those options and update this thread. cc: @Karan Kumar @Gian Merlino