So whenever we restart influxdb, we notice that it takes quite a while for grafana to reconnect/read data from influxdb.(up to ~10m)
However, when it comes to writing data and accessing /health endpoint the DB is available within ~2-3 mins.
Why does the DB take a longer time to serve reads after the DB service/process is restarted?
Is it related to WAL flushing, but why does that affect read?