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Today, I attempted to submit a preimage, start an external proposal and initiate referenda.

Check the preimage here: https://crab.subscan.io/referenda/4?tab=proposal_preimage.

The outcome of my efforts can be found at https://crab.subscan.io/block/170147?tab=event&event=170147-0. However, I encountered an error which stated that the inherent responsible for providing validation data did not run during this block (ValidationDataNotAvailable).

/// The inherent which supplies the validation data did not run this block
ValidationDataNotAvailable,

I am curious if the priority of scheduled extrinsics is higher than that of inherent extrinsics. It appears that the scheduled referenda were applied before set_validation_data.

What would be the best approach in such a scenario? If the preimage is a ParachainSystem::authorize_upgrade instead of a batch call, sending ParachainSystem::enact_authorized_upgrade separately will result in high transaction fees.

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  • You already answered this yourself? substrate.stackexchange.com/questions/6285/…
    – bkchr
    Apr 3, 2023 at 19:42
  • But enact this myself would cause a lot of tx fee (the wasm is large). It looks like we don’t have any other ways to avoid that…
    – AurevoirXavier
    Apr 4, 2023 at 2:02
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    enact_authorized_upgrade currently has a static weight? So, that doesn't change with the size of the wasm file?
    – bkchr
    Apr 4, 2023 at 19:59

1 Answer 1

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Yep. Thanks to @bkchr.

The enact_authorized_upgrade currently has a static weight. It won't cost too much.


I believe we can request funding for runtime upgrades from the treasury, regardless of the cost. The treasury will support us, whether it is a significant or minor expense.

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