Tracking issue for bounding `pallet-staking` storage items #255

kianenigma · 2022-09-05T11:47:02Z

related to #323 and paritytech/substrate#9724

If we simply remove the pallet::without_storage_info, we get an error about the following items:

Full Errors

error[E0277]: the trait bound `std::vec::Vec<<T as frame_system::Config>::AccountId>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `std::vec::Vec<<T as frame_system::Config>::AccountId>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageInvulnerables<T>, std::vec::Vec<<T as frame_system::Config>::AccountId>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `StakingLedger<T>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `StakingLedger<T>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStorageLedger<T>, frame_support::Blake2_128Concat, <T as frame_system::Config>::AccountId, StakingLedger<T>>`

error[E0277]: the trait bound `RewardDestination<<T as frame_system::Config>::AccountId>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `RewardDestination<<T as frame_system::Config>::AccountId>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStoragePayee<T>, frame_support::Twox64Concat, <T as frame_system::Config>::AccountId, RewardDestination<<T as frame_system::Config>::AccountId>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `ValidatorPrefs: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `ValidatorPrefs`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::CountedStorageMap<pallet::pallet::_GeneratedPrefixForStorageValidators<T>, frame_support::Twox64Concat, <T as frame_system::Config>::AccountId, ValidatorPrefs, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `Nominations<T>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `Nominations<T>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::CountedStorageMap<_GeneratedPrefixForStorageNominators<T>, frame_support::Twox64Concat, <T as frame_system::Config>::AccountId, Nominations<T>>`

error[E0277]: the trait bound `ActiveEraInfo: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `ActiveEraInfo`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageActiveEra<T>, ActiveEraInfo>`

error[E0277]: the trait bound `Exposure<<T as frame_system::Config>::AccountId, <T as pallet::pallet::Config>::CurrencyBalance>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `Exposure<<T as frame_system::Config>::AccountId, <T as pallet::pallet::Config>::CurrencyBalance>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageDoubleMap<_GeneratedPrefixForStorageErasStakers<T>, frame_support::Twox64Concat, u32, frame_support::Twox64Concat, <T as frame_system::Config>::AccountId, Exposure<<T as frame_system::Config>::AccountId, <T as pallet::pallet::Config>::CurrencyBalance>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `EraRewardPoints<<T as frame_system::Config>::AccountId>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `EraRewardPoints<<T as frame_system::Config>::AccountId>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStorageErasRewardPoints<T>, frame_support::Twox64Concat, u32, EraRewardPoints<<T as frame_system::Config>::AccountId>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `Forcing: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `Forcing`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageForceEra<T>, Forcing, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `std::vec::Vec<UnappliedSlash<<T as frame_system::Config>::AccountId, <T as pallet::pallet::Config>::CurrencyBalance>>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `std::vec::Vec<UnappliedSlash<<T as frame_system::Config>::AccountId, <T as pallet::pallet::Config>::CurrencyBalance>>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStorageUnappliedSlashes<T>, frame_support::Twox64Concat, u32, std::vec::Vec<UnappliedSlash<<T as frame_system::Config>::AccountId, <T as pallet::pallet::Config>::CurrencyBalance>>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `std::vec::Vec<(u32, u32)>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `std::vec::Vec<(u32, u32)>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageBondedEras<T>, std::vec::Vec<(u32, u32)>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `slashing::SlashingSpans: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `slashing::SlashingSpans`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStorageSlashingSpans<T>, frame_support::Twox64Concat, <T as frame_system::Config>::AccountId, slashing::SlashingSpans>`

error[E0277]: the trait bound `SpanRecord<<T as pallet::pallet::Config>::CurrencyBalance>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `SpanRecord<<T as pallet::pallet::Config>::CurrencyBalance>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStorageSpanSlash<T>, frame_support::Twox64Concat, (<T as frame_system::Config>::AccountId, u32), SpanRecord<<T as pallet::pallet::Config>::CurrencyBalance>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `std::vec::Vec<(u32, bool)>: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `std::vec::Vec<(u32, bool)>`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageOffendingValidators<T>, std::vec::Vec<(u32, bool)>, frame_support::pallet_prelude::ValueQuery>`

error[E0277]: the trait bound `Releases: parity_scale_codec::MaxEncodedLen` is not satisfied
  --> frame/staking/src/pallet/mod.rs:59:12
   |
59 |     #[pallet::pallet]
   |               ^^^^^^ the trait `parity_scale_codec::MaxEncodedLen` is not implemented for `Releases`
   |
   = help: the following other types implement trait `parity_scale_codec::MaxEncodedLen`:
             ()
             (TupleElement0, TupleElement1)
             (TupleElement0, TupleElement1, TupleElement2)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)
             (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)
           and 78 others
   = note: required because of the requirements on the impl of `StorageInfoTrait` for `frame_support::pallet_prelude::StorageValue<_GeneratedPrefixForStorageStorageVersion<T>, Releases, frame_support::pallet_prelude::ValueQuery>`

For more information about this error, try `rustc --explain E0277`.
error: could not compile `pallet-staking` due to 15 previous errors

Invulnerables
StakingLedger
Payee
Validators / ValidatorPrefs
Nominators / Nominations
ErasStakers / ErasStakersClipped / Exposure
ActiveEraInfo
ErasRewardPoints
Forcing
UnappliedSlashes
BondedEras
SlashingSpans
OffendingValidators
Releases

I categorize these into 4 groups:

[Done] Trivial ones. These are generally 1 liner changes for the type to derive(MaxEncodedLen). This list includes:
[Done] Bounded by HistoryDepth. This includes only StakingLedger. Also, a number of storage maps and double maps have an invariant that the number of their keys should never exceed HistoryDepth. We should detect these, and make sure they are always respected (use try_state).
[Done] Bounding by MaxActiveValidators. These are storage item who's bound is missing because we don't enforce a bound on the maximum number of active validators.

This will eventually leak into election-provider-mutli-phase, and staking would express: type ElectionProvider<MaxWinners = Self::MaxActiveValidators>
This will eventually help staking pallet bound the number of validators into session as well. In other words
@Doordashcon started this with session, staking: introduce static limit on the number of validators substrate#11967 and Bound RewardPoints in pallet-staking substrate#12125, but I think we should start from scratch based on my draft in https://github.com/paritytech/substrate/tree/kiz-properly-bound-staking-validators.

[Weakly bounded in this PR] Bounding by maximum number of active exposed nominators per validator, i.e. MaxBackersPerWinner. @ggwpez started doing this in Staking: Introduce MaxBackersPerWinner substrate#11935, we need someone to finish it.
Slashing related storage items. These are the more scary ones, and I am not sure if and how we should bound them. The slashing code needs an overhaul in any case.

So, these are the bounds we know:

MaxActiveValidators:
- Invulnerables
- ErasRewardPoints
MaxBackersPerWinner
- ErasStakers / ErasStakersClipped / Exposure
HistoryDepth
- StakingLedger
Trivial
- ActiveEraInfo
- Forcing
- Payee
- Validators / ValidatorPrefs
- Nominators / Nominations
  -Releases
Slashing, unknown
- UnappliedSlashes
- BondedEras
- SlashingSpans
- OffendingValidators

It is hard to predict all of these without actually writing the entire code. I might be wrong in some places.

An easy action item, which I am happy to mentor for someone external is to take care of all the trivial ones.
I am not sure about MaxActiveValidators. I might prefer doing it myself since it is rather important and touches a few pallets. Nonetheless, I am grateful for @Doordashcon's effort here so far and will acknowledge it.
MaxBackersPerWinner needs completion by me and @ggwpez
Slashing is a project of its own.

The text was updated successfully, but these errors were encountered:

Doordashcon · 2022-09-06T08:40:19Z

Hello @kianenigma I'd like to keep working on MaxActiveValidators with guidance from you or anyone from your team.

As for the trivial ones, I'll look into that as well if that's alright with you.

kianenigma · 2022-09-06T11:21:48Z

Hello @kianenigma I'd like to keep working on MaxActiveValidators with guidance from you or anyone from your team.

Then you can close the existing PRs, and build on top of paritytech/substrate@4682f3f, thanks!

kianenigma · 2022-09-08T09:51:39Z

@Doordashcon please note that @Ank4n will be looking into HistoryDepth and generally push forward this tracking issue.

Doordashcon · 2022-09-13T05:29:01Z

Dropping this

kianenigma · 2024-02-05T14:21:23Z

This should be done as a part of #2199.

@Ank4n @gpestana please double-check that the above assumption is true. In this case, I don't see any room for mentoring here anymore.

Ank4n · 2024-03-07T11:00:00Z

Updated list of unbounded storage items

Invulnerables: Initial set of validators. Ideally not more than 4. Can be bounded by some number in the range (4-10).
ErasStakers: This is deprecated and will be removed once 84 eras have passed after runtime (polkadot and kusama) is upgraded to 1.5.0. Handled in [pallet-staking] Clean up stale non paged exposure storages in the pallet #5986.
ErasStakersClipped: Same as ErasStakers. Handled in [pallet-staking] Clean up stale non paged exposure storages in the pallet #5986.
ErasStakersPaged: Will be bounded once we reduce exposure page size to a low value (like 128 or 32).
ClaimedRewards: Unbounded exposure pages. We could bound it to MaxNominatorsCount/page_size.
ErasRewardPoints: unbounded validator count. Could be bounded to ValidatorCount.
UnappliedSlashes: Need to bound reporters and pagify stakers to be slashed. Unbounded count of unapplied slashes. Can be bounded by Slash defer duration.
BondedEras: Can be bounded by bounding duration.
SlashingSpans: Slashing span is one or more eras. Can be bounded by unbonding duration.
OffendingValidators: Unbounded by count of offending validators. Can be bounded by desired ValidatorCount.

Lot of the bounds that we need are storage items. We should probably convert them to config constants.

This PR updates litep2p to the latest release. - `KademliaEvent::PutRecordSucess` is renamed to fix word typo - `KademliaEvent::GetProvidersSuccess` and `KademliaEvent::IncomingProvider` are needed for bootnodes on DHT work and will be utilized later ### Added - kad: Providers part 8: unit, e2e, and `libp2p` conformance tests ([#258](paritytech/litep2p#258)) - kad: Providers part 7: better types and public API, public addresses & known providers ([#246](paritytech/litep2p#246)) - kad: Providers part 6: stop providing ([#245](paritytech/litep2p#245)) - kad: Providers part 5: `GET_PROVIDERS` query ([#236](paritytech/litep2p#236)) - kad: Providers part 4: refresh local providers ([#235](paritytech/litep2p#235)) - kad: Providers part 3: publish provider records (start providing) ([#234](paritytech/litep2p#234)) ### Changed - transport_service: Improve connection stability by downgrading connections on substream inactivity ([#260](paritytech/litep2p#260)) - transport: Abort canceled dial attempts for TCP, WebSocket and Quic ([#255](paritytech/litep2p#255)) - kad/executor: Add timeout for writting frames ([#277](paritytech/litep2p#277)) - kad: Avoid cloning the `KademliaMessage` and use reference for `RoutingTable::closest` ([#233](paritytech/litep2p#233)) - peer_state: Robust state machine transitions ([#251](paritytech/litep2p#251)) - address_store: Improve address tracking and add eviction algorithm ([#250](paritytech/litep2p#250)) - kad: Remove unused serde cfg ([#262](paritytech/litep2p#262)) - req-resp: Refactor to move functionality to dedicated methods ([#244](paritytech/litep2p#244)) - transport_service: Improve logs and move code from tokio::select macro ([#254](paritytech/litep2p#254)) ### Fixed - tcp/websocket/quic: Fix cancel memory leak ([#272](paritytech/litep2p#272)) - transport: Fix pending dials memory leak ([#271](paritytech/litep2p#271)) - ping: Fix memory leak of unremoved `pending_opens` ([#274](paritytech/litep2p#274)) - identify: Fix memory leak of unused `pending_opens` ([#273](paritytech/litep2p#273)) - kad: Fix not retrieving local records ([#221](paritytech/litep2p#221)) See release changelog for more details: https://github.com/paritytech/litep2p/releases/tag/v0.8.0 cc @paritytech/networking --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: Dmitry Markin <dmitry@markin.tech>

kianenigma added J1-meta labels Sep 5, 2022

kianenigma mentioned this issue Sep 5, 2022

session, staking: introduce static limit on the number of validators paritytech/substrate#9724

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Doordashcon mentioned this issue Sep 6, 2022

Bound RewardPoints in pallet-staking paritytech/substrate#12125

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kianenigma assigned Ank4n Sep 6, 2022

This was referenced Sep 7, 2022

Bounding by MaxActiveValidators paritytech/substrate#12202

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Bound trivial types in pallet-staking paritytech/substrate#12207

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Ank4n mentioned this issue Sep 9, 2022

Bound staking storage items paritytech/substrate#12230

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Ank4n mentioned this issue Sep 27, 2022

bounding staking: BoundedElectionProvider trait paritytech/substrate#12362

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Ank4n mentioned this issue Oct 6, 2022

Bound Election and Staking by MaxActiveValidators paritytech/substrate#12436

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kianenigma mentioned this issue Aug 24, 2023

Vision: Path to removing reduce from NPoS protocol #419

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juangirini added the T1-runtime label Jun 7, 2023

gpestana mentioned this issue Jul 10, 2023

Bounds EPM's CurrentPhase, SnapshotMetadata and Snapshot storage structs paritytech/substrate#14543

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juangirini transferred this issue from paritytech/substrate Aug 24, 2023

kianenigma removed the C1-mentor A task where a mentor is available. Please indicate in the issue who the mentor could be. label Feb 5, 2024

Ank4n linked a pull request Oct 8, 2024 that will close this issue

[pallet-staking] Bound all storage #5987

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muharem mentioned this issue Oct 30, 2024

[tracking] remove without_storage_info for pallets migrating to AH #6289

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Tracking issue for bounding `pallet-staking` storage items #255

Tracking issue for bounding `pallet-staking` storage items #255

kianenigma commented Sep 5, 2022 •

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Doordashcon commented Sep 6, 2022 •

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Tracking issue for bounding pallet-staking storage items #255

Tracking issue for bounding pallet-staking storage items #255

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Tracking issue for bounding `pallet-staking` storage items #255

Tracking issue for bounding `pallet-staking` storage items #255

kianenigma commented Sep 5, 2022 •

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