Ephemeral MARF #6365
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Ephemeral MARF #6365
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…e on disk, and a RAM-backed MARF store which loads data from a read-only handle. Implement ClarityBlockStore for the ephemeral variant
moodmosaic
reviewed
Aug 11, 2025
fix: correct ephemeral open-tip height
5 tasks
…ich combine to form a WritableMarfStore trait. This factoring consolidates code between PersistentWritableMarfStore and EphemeralMarfStore and separates transaction lifecycle concerns from the act of writing data.
…-core into feat/shadow-marf
kantai
reviewed
Sep 12, 2025
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Looks very good to me and works flawlessly with my block simulator branch. I will push that branch (based on this) in a couple of days (while the other comments are addressed) |
Co-authored-by: Brice <[email protected]>
Co-authored-by: Brice <[email protected]>
kantai
previously approved these changes
Sep 16, 2025
rdeioris
previously approved these changes
Sep 17, 2025
kantai
approved these changes
Sep 17, 2025
Merged
via the queue into
stacks-network:develop
with commit Sep 17, 2025
22af7d9
300 of 301 checks passed
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This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. |
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Description
Implements #6350 by re-implementing
WritableMarfStoreas an enum of a persistent disk-backed variant (the one we currently have), and a new ephemeral variant in which writes are committed to a RAM-backed Sqlite store, and in which reads will hit both the in-RAM sqlite store and an internalReadOnlyMarfStorehandle. This feature will be used to allow the node to replay blocks without the possibility of committing them to disk.Applicable issues
Additional info (benefits, drawbacks, caveats)
A caveat: blocks produced with the ephemeral variant will not have the same state root hash as they would have had they been produced with the persistent variant. This is a consequence of the fact that the new block's MARF key/value pairs and side-storage live in a separate MARF, whose trie is not linked to the disk-backed parent trie. This is acceptable because the purpose of this PR is to allow the node to replay already-processed blocks in order to extract the transaction receipts. The node already knows the "true" state root hash.
This PR is a draft until it has enough test coverage.
Checklist
docs/rpc/openapi.yamlandrpc-endpoints.mdfor v2 endpoints,event-dispatcher.mdfor new events)clarity-benchmarkingrepobitcoin-tests.yml