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Add graphman rewind #2373

Merged
merged 3 commits into from
Apr 20, 2021
Merged

Add graphman rewind #2373

merged 3 commits into from
Apr 20, 2021

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lutter
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@lutter lutter commented Apr 12, 2021

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Comment on lines +969 to +984
// Sanity check on block numbers
if block_ptr_from.number != block_ptr_to.number + 1 {
panic!("revert_block_operations must revert a single block only");
}
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Is this just here because we revert block by block usually? It's not here because reverting many blocks at once breaks things?

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@lutter lutter Apr 12, 2021

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It probably used to be that we had to go block-by-block; but for quite some time now, it's been safe to jump the block pointer back (assuming you know that you are jumping to the correct block pointer, which this PR slyly puts on the user) All the reversion queries just look at things that happened at/after the given block.

I left that code in since I didn't want to muck with the 'normal' reversion code path.

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@Jannis Jannis left a comment

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There's one thing in the changed code that I'm not sure about. Otherwise the changes look correct.

@lutter lutter merged commit 94e6d49 into master Apr 20, 2021
@lutter lutter deleted the lutter/rewind branch April 21, 2021 16:45
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2 participants