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Do not run unneeded subsystems on collator and its alongside node (#3061)

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Currently, collators and their alongside nodes spin up a full-scale
overseer running a bunch of subsystems that are not needed if the node
is not a validator. That was considered to be harmless; however, we've
got problems with unused subsystems getting stalled for a reason not
currently known, resulting in the overseer exiting and bringing down the
whole node.

This PR aims to only run needed subsystems on such nodes, replacing the
rest with `DummySubsystem`.

It also enables collator-optimized availability recovery subsystem
implementation.

Partially solves #1730.
This commit is contained in:
s0me0ne-unkn0wn
2024-01-29 10:53:51 +01:00
committed by GitHub
parent 987edd8864
commit 3e8139e7de
16 changed files with 429 additions and 220 deletions
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prdoc/pr_3061.prdoc
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# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json
title: Do not run unneeded subsystems on collator and its alongside node
doc:
- audience: Node Dev
description: |
Optimizes overseer building strategy to only include subsystems needed to run the given
type of node. Reduces overseer overhead and also solves the problem with unused subsystems
getting stalled from time to time.
crates:
- name: polkadot-overseer
- name: polkadot-service