Consider the following scenario:
- A tablet is migrated away from a shard
- The tablet cleanup stage closes the storage group's async_gate
- A drop table runs truncate which attempts to disable compaction on the tablet with its gate closed. This fails, because table::parallel_foreach_compaction_group() ultimately calls storage_group_manager::parallel_foreach_storage_group() which will not disable compaction if it can't hold the storage group's gate
- Truncate calls table::discard_sstables() which checks if the compaction has been disabled, and because it hasn't, it then runs on_internal_error() with "compaction not disabled on table ks.cf during TRUNCATE" which causes a crash
Fixes: #25706
This needs to be backported to all supported versions with tablets
- (cherry picked from commit a0934cf80d)
- (cherry picked from commit 1b8a44af75)
Parent PR: #25708Closesscylladb/scylladb#25785
* github.com:scylladb/scylladb:
test: reproducer and test for drop with concurrent cleanup
truncate: check for closed storage group's gate in discard_sstables
c30c1ec40a