Botond Dénes 4a0f16474f Merge 'row_cache: abort on exteral_updater::execute errors' from Benny Halevy ...

Currently the cache updaters aren't exception safe
yet they are intended to be.

Instead of allowing exceptions from
`external_updater::execute` escape `row_cache::update`,
abort using `on_fatal_internal_error`.

Future changes should harden all `execute` implementations
to effectively make them `noexcept`, then the pure virtual
definition can be made `noexcept` to cement that.

Fixes scylladb/scylladb#15576

Closes scylladb/scylladb#15577

* github.com:scylladb/scylladb:
  row_cache: abort on exteral_updater::execute errors
  row_cache: do_update: simplify _prev_snapshot_pos setup

2023-10-31 10:07:01 +02:00

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