[GitHub] [incubator-druid] gianm commented on issue #8842: HOw to set the druid replication to zero?

[GitBox <gi...@apache.org>]

gianm commented on issue #8842: HOw to set the druid replication to zero?
URL: https://github.com/apache/incubator-druid/issues/8842#issuecomment-551301094
 
 
   Hi @abk-code,
   
   The lowest replication you can set is 1. Zero isn't allowed since it would mean no copies of data exist on the Druid servers, and Druid always queries data from local disk or local memory. (Even though there is a copy on S3, the querying always happens from local disk/memory.)
   
   The default compression settings generally compress the most aggressively. Usually people change away from the defaults if they want higher scan rates but a lower compression level.
   
   One really good way to reduce footprint is to consider the optimal partitioning and sorting of your data: https://druid.apache.org/docs/latest/ingestion/index.html#partitioning
   
   Rollup is also useful: https://druid.apache.org/docs/latest/ingestion/index.html#rollup

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