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Alin Dima
4842faf65d
Changes needed to implement the runtime part of elastic scaling: https://github.com/paritytech/polkadot-sdk/issues/3131, https://github.com/paritytech/polkadot-sdk/issues/3132, https://github.com/paritytech/polkadot-sdk/issues/3202 Also fixes https://github.com/paritytech/polkadot-sdk/issues/3675 TODOs: - [x] storage migration - [x] optimise process_candidates from O(N^2) - [x] drop backable candidates which form cycles - [x] fix unit tests - [x] add more unit tests - [x] check the runtime APIs which use the pending availability storage. We need to expose all of them, see https://github.com/paritytech/polkadot-sdk/issues/3576 - [x] optimise the candidate selection. we're currently picking randomly until we satisfy the weight limit. we need to be smart about not breaking candidate chains while being fair to all paras - https://github.com/paritytech/polkadot-sdk/pull/3573 Relies on the changes made in https://github.com/paritytech/polkadot-sdk/pull/3233 in terms of the inclusion policy and the candidate ordering --------- Signed-off-by: alindima <alin@parity.io> Co-authored-by: command-bot <> Co-authored-by: eskimor <eskimor@users.noreply.github.com>