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Robert Klotzner 503e2b74f9 Request based collation fetching (#2621 )

* Introduce collation fetching protocol

also move to mod.rs

* Allow `PeerId`s in requests to network bridge.

* Fix availability distribution tests.

* Move CompressedPoV to primitives.

* Request based collator protocol: validator side

- Missing: tests
- Collator side
- don't connect, if not connected

* Fixes.

* Basic request based collator side.

* Minor fix on collator side.

* Don't connect in requests in collation protocol.

Also some cleanup.

* Fix PoV distribution

* Bump substrate

* Add back metrics + whitespace fixes.

* Add back missing spans.

* More cleanup.

* Guide update.

* Fix tests

* Handle results in tests.

* Fix weird compilation issue.

* Add missing )

* Get rid of dead code.

* Get rid of redundant import.

* Fix runtime build.

* Cleanup.

* Fix wasm build.

* Format fixes.

Thanks @andronik !

2021-03-18 09:06:36 +01:00

availability-distribution.md

Request based collation fetching (#2621 )

2021-03-18 09:06:36 +01:00

availability-recovery.md

A fast-path for requesting AvailableData from backing validators (#2453 )

2021-02-17 13:51:50 -06:00

bitfield-distribution.md

Network Bridge Refactoring (#1535 )

2020-08-05 09:04:05 +00:00

bitfield-signing.md

Add candidate info to OccupiedCore (#2134 )

2020-12-18 11:20:37 +03:00

README.md

I am dumb and can't spell (#1366 )

2020-07-07 10:10:36 -04:00

README.md

Availability Subsystems

The availability subsystems are responsible for ensuring that Proofs of Validity of backed candidates are widely available within the validator set, without requiring every node to retain a full copy. They accomplish this by broadly distributing erasure-coded chunks of the PoV, keeping track of which validator has which chunk by means of signed bitfields. They are also responsible for reassembling a complete PoV when required, e.g. when a fisherman reports a potentially invalid block.