CODEWITHSUNDEEP
substratepolkadot
Georgi Zlatarev
Georgi Zlatarev

Reputation: 1

Error after runtime upgrade to reduce `EPOCH_DURATION_IN_SLOTS` of `westend-local` relay chain

I've got a 0.9.12 westend-local relay chain with 4 authorities Alice, Charlie, Bob and Dave. My goal is to do a runtime upgrade to reduce EPOCH_DURATION_IN_SLOTS to let's say 1 minute instead of 1 hour. However I'm getting the following error babe: Error with block built on 0x...: ClientImport("Unexpected epoch change") Is it possible to reduce this parameter without breaking the chain ? Still trying to make sense of the associated code https://github.com/paritytech/substrate/blob/master/client/consensus/babe/src/lib.rs#L1500

Upvotes: 0

Views: 340

Answers (1)

kianenigma
kianenigma

Reputation: 1405

It is currently not possible to change this without restarting the chain: https://github.com/paritytech/substrate/blob/b6a3ecc150040daa440637ac892265165f3450f6/frame/babe/src/lib.rs#L124-L128.

Upvotes: 0

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