Supports deserializing accounts lt hash in snapshots #2994
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Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis. |
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(cherry picked from commit 690fad0) # Conflicts: # accounts-db/src/accounts_hash.rs # runtime/src/serde_snapshot.rs
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(cherry picked from commit 690fad0) # Conflicts: # accounts-db/src/accounts_hash.rs # runtime/src/serde_snapshot.rs
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(cherry picked from commit 690fad0) # Conflicts: # accounts-db/src/accounts_hash.rs # runtime/src/serde_snapshot.rs
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Problem
The accounts lattice hash will be serialized to/deserialized from snapshots. In order to maintain snapshot compatibility between adjacent versions (edge <-> beta, and beta <-> stable), we must be able to deserialize (and ignore) the new field in adjacent version before we serialize the new field into snapshots.
Summary of Changes
Add support for deserializing the accounts lt hash in snapshots.
Note, the field is ignored (if present) for now.
Note 2, this PR will be backported to v2.0.