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BABE: Fix aux data cleaning (#11263) #11276
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With the latest optimizations of the `FinalityNotification` generation, the aux data pruning started to print a warning. The problem here was that we printed a warning and stopped the adding of blocks to prune when we hit the `heigh_limit`. This is now wrong, as we could for example have two 512 long forks and then we start finalizing one of them. The second fork head would be part of the stale heads at some point (in the current implementation when we finalize second fork head number + 1), but then we would actually need to go back into the past than `heigh_limit` (which was actually last_finalized - 1). We now go back until we reach the canonical chain. Also fixed some wrong comment that was added by be about the content of the `finalized` blocks in the `FinalityNotification`.
chevdor
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coderobe
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Apr 25, 2022
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Backport of #11263 into the release branch
polkadot-v0.9.20With the latest optimizations of the
FinalityNotificationgeneration, the aux data pruning startedto print a warning. The problem here was that we printed a warning and stopped the adding of blocks
to prune when we hit the
heigh_limit. This is now wrong, as we could for example have two 512 longforks and then we start finalizing one of them. The second fork head would be part of the stale
heads at some point (in the current implementation when we finalize second fork head number + 1),
but then we would actually need to go back into the past than
heigh_limit(which was actuallylast_finalized - 1). We now go back until we reach the canonical chain.
Also fixed some wrong comment that was added by be about the content of the
finalizedblocks inthe
FinalityNotification.