Statesync

[faddat]

Adds a script and a test for state sync.

This is currently failing, but in the future will give us a known-good state sync configuration.

Request help with a fix, I am a bit puzzled.

[codecov-commenter]

Codecov Report

Merging #444 (59dbb09) into main (3d74adf) will not change coverage.
The diff coverage is n/a.

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##             main     #444   +/-   ##
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  Coverage   19.88%   19.88%           
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  Files         153      153           
  Lines       23040    23040           
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  Hits         4581     4581           
  Misses      17707    17707           
  Partials      752      752           

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[ValarDragon]

Is this trying to state sync against mainnet?

[faddat]

Yep

[faddat]

The way that I'm looking at this is we can use this as an indicator of changes that would cause differences in the app hash, and of changes that might break state sync itself.

[faddat]

It will currently fail in the master branch but we can tag it with that one setting that causes it to continue on error.

[faddat]

This now runs in 4 minutes and 17 seconds.

If we do a v3.10.1, And put tendermint 34.12 In it, that will allow people to smoothly state sync using this script.

Just like the peers in the init file, this will need more participation from the validator community to ensure that it is nice and decentralized but for now I can run a bootstrap node that's no problem.

[ValarDragon]

Awesome, glad that this is landing!

I don't super understand how we envision this test getting ran, should we have it be like a daily build against a branch?

main collects breaking changes for the next versions state machine

[ValarDragon]

I'm happy to make the CI part workflow_dispatch only, get a daily build going there, and merge this script in.

We should start maintaining v3.x and v4.x branches, and then perhaps have this state sync script be running against though?

I've done the Tendermint change you need in the v3.2.0 branch, which has accumulated a bunch of the minor improvemetns from main and epoch speedups.

[ValarDragon]

Once we change this. I think its good to merge

[ValarDragon]

LGTM!