sentry: panic: Unknown collection identifier u47

[sentry-io]

Sentry Issue: DATABASE-BACKEND-2R9

panic: Unknown collection identifier u47
  File "panicking.rs", line 575, in rust_begin_unwind
  File "controller.rs", line 2031, in mz_storage_client::controller::Controller<T>::update_read_capabilities
  File "instance.rs", line 890, in mz_compute_client::controller::instance::ActiveInstance<T>::update_write_frontiers
  File "instance.rs", line 1106, in mz_compute_client::controller::instance::ActiveInstance<T>::handle_frontier_uppers
  File "instance.rs", line 1039, in mz_compute_client::controller::instance::ActiveInstance<T>::handle_response
...
(27 additional frame(s) were not displayed)

[def-]

@arusahni This seems to have come from your staging environment. Is it an actual issue or did you just do something that isn't supposed to work?

[arusahni]

@def- I wasn't experimenting with the database, so I think this may be an actual issue. I triggered this by dropping a schema that had some indices and a materialized view. A screencast with the commands I ran (and the crash) is available on Slack.

[maddyblue]

Are we sure this is a storage issue? Some one from surfaces should perhaps investigate.

[def-]

This now also happened in @jseldess's staging: https://materializeinc.sentry.io/issues/4266541496

[benesch]

Say, this could be related to #19743.