I am now a beginner with InfluxDB.
What i am confused is Relationship between Retention Policy and Shard Group Duration after reading this article (Simplifying InfluxDB: Shards and Retention Policies | InfluxData)
What i know is that default retention policy(autogen) infinitely stores data and never remove it.
But in the article above, it says time-series data is stored on shard group and If nothing is specified, the shard group duration defaults to 7 days. And InfluxDB drops an entire shard group if duration expired
For me, this description conflicts with default retention policy which store data infinitely.
What I’m curious about is what happens if retention policy and shard group duration is default. Is data permanently stored? or is shard group dropped? What happens?