This is alternative to the https://github.com/prometheus/tsdb/pull/659 I feel like iterators is the way to go here as we want to iterate & stream chunks instead of buffering all.
Both PRs are for same use case: Allowing Querier to return raw chunks if asked. This will help massively on https://github.com/prometheus/prometheus/pull/5703
This iterators implementation is easy here but will be more important & tricky for head in Prometheus.
fixes https://github.com/prometheus/tsdb/issues/328
Signed-off-by: Bartek Plotka
该提问来源于开源项目：prometheus-junkyard/tsdb
