Module upsert_stash_spill 

Storage’s leg of the process-wide chunk spill gate, used by the chunked upsert-v2 stash flavor.

In that flavor the source stash and feedback arrangement spill through the process buffer pool (mz_timely_util::columnar::chunk): committed chunk bodies land in the pool once compute’s config handler has installed and budgeted it (storage and compute run in the same clusterd process).

The gate is process-wide with one leg per subsystem, and chunks spill while either leg is set. Storage sets its leg from enable_upsert_paged_spill, so that flag alone cannot veto spilling enabled by compute’s leg. The gate is consulted at every chunk commit, so flips apply to running dataflows.

Functions

set_enabled

Enable or disable spilling of upsert chunk bodies to the buffer pool.