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Fix nothing scheduled on session boundary (#1403)

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* Fix scheduled state at session boundaries.

* Cleanup + better docs.

* More cleanup and fixes.

* Remove 12s hack.

* Add dep.

* Make clippy happy

---------

Co-authored-by: eskimor <eskimor@no-such-url.com>
This commit is contained in:
eskimor
2023-09-06 18:19:21 +02:00
committed by GitHub
parent eeb368ed9c
commit 1e2a2f0c69
19 changed files with 489 additions and 643 deletions
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polkadot/runtime/parachains/src/configuration.rs
+13 -4
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@@ -190,11 +190,20 @@ pub struct HostConfiguration<BlockNumber> {
///
/// Must be non-zero.
pub group_rotation_frequency: BlockNumber,
/// The availability period, in blocks. This is the amount of blocks
/// after inclusion that validators have to make the block available and signal its
/// availability to the chain.
/// The minimum availability period, in blocks.
///
/// Must be at least 1.
/// This is the minimum amount of blocks after a core became occupied that validators have time
/// to make the block available.
///
/// This value only has effect on group rotations. If backers backed something at the end of
/// their rotation, the occupied core affects the backing group that comes afterwards. We limit
/// the effect one backing group can have on the next to `paras_availability_period` blocks.
///
/// Within a group rotation there is no timeout as backers are only affecting themselves.
///
/// Must be at least 1. With a value of 1, the previous group will not be able to negatively
/// affect the following group at the expense of a tight availability timeline at group
/// rotation boundaries.
pub paras_availability_period: BlockNumber,
/// The amount of blocks ahead to schedule paras.
pub scheduling_lookahead: u32,