The per-tile readiness timeout added in the prior commit logged at ERROR.
A chart failing to load in time is a customer chart-loading issue (slow
query, error state), not a Superset system fault, so downgrade it to
WARNING -- matching the precedent set in #38130 and #38441 for the other
screenshot timeout paths. The report still fails loudly (raise is
unchanged); only the log level changes. Genuine system faults (the
catch-all Exception handler) stay at ERROR/exception level.
Thread an optional execution_id through
ChartScreenshot/DashboardScreenshot.get_screenshot -> WebDriverProxy
subclasses -> take_tiled_screenshot, populated from
BaseReportState._execution_id in the report pipeline (None elsewhere,
e.g. thumbnails), so every log line this change touches can be
correlated back to the report execution that produced it.
The readiness-timeout diagnostics now identify not just which chart
holders are unready but the state each is stuck in --
"waiting_on_database" (initial query in flight, whole container
replaced by a spinner), "spinner_mounted" (query finished but the
chart isn't in the virtualization viewport yet, spinner nested inside
an otherwise-present slice_container), or "nothing_mounted" (the
vacuous-pass race the previous commit closed) -- so a slow query can be
told apart from the virtualization race during an incident. Also added
a per-tile DEBUG line with the time spent waiting for readiness, to
profile slow dashboards from logs.
Co-Authored-By: Claude <noreply@anthropic.com>
