Vladimir Davydov

> > Some fibers can be considered as system ones (e.g. connection's worker fiber). Consequently, these fibers are not supposed to be explicitly cancelled from the Lua world > >...

> They're a number of fibers, which can be marked as system ones. All of them are not mentioned in cartridge's list. Do we want to do that? IMO this...

Cherry-picked to 2.10.

The PR that fixes this issue does quite a lot of refactoring of the configuration subsystem, which makes it difficult to backport it to 2.10. Since the issue is minor...

Cherry-picked to 2.10.

Looks like [documented](https://www.tarantool.io/en/doc/latest/book/box/triggers/#triggers-box-triggers) undefined behavior:  I don't think we need to fix this, because: 1. Nobody requested this kind of functionality. 2. Implementing/fixing it would complicate the code.

@sergepetrenko Apart from requesting a review, please also assign the PR to me - otherwise I might miss it.

Cherry-picked to 2.10.

> RFC: [notion.so](https://www.notion.so/tarantool/tarantool-compat-introduce-compatibility-module-to-tarantool-8cb33e23932b490384c05f1cdfbf7baa)  "Approved by timeout" - what does it even mean? How does it correlate with the [product task](https://www.notion.so/tarantool/Backward-compatibility-support-4f1c4f5a47144660b7803798dd521991)? Also, please don't set the `full-ci` label until you...

> > "Approved by timeout" - what does it even mean? How does it correlate with the [product task](https://www.notion.so/tarantool/Backward-compatibility-support-4f1c4f5a47144660b7803798dd521991)? > > We had an agreement with Mons and @igormunkin, that...