A pane closes only when a later sample arrives in the same series. If the series stops sending, its last pane stays open, apart from a wall-clock idle timeout of window + 5 s (155 s with 150 s panes). While that one pane is open, every query over the window falls back to Prometheus, for all series, not just the stopped one.
Remote write has no way to tell the backend that a series or window is complete.
Ask: a public completion signal (e.g. expose SummaryWatermarkBarrier), or a configurable idle timeout (hard-coded in data_plane/src/main.rs).
Seen at d7a03e54, --profile asapquery, lateness 0.
A pane closes only when a later sample arrives in the same series. If the series stops sending, its last pane stays open, apart from a wall-clock idle timeout of window + 5 s (155 s with 150 s panes). While that one pane is open, every query over the window falls back to Prometheus, for all series, not just the stopped one.
Remote write has no way to tell the backend that a series or window is complete.
Ask: a public completion signal (e.g. expose
SummaryWatermarkBarrier), or a configurable idle timeout (hard-coded indata_plane/src/main.rs).Seen at
d7a03e54,--profile asapquery, lateness 0.