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WalkthroughAdds checkpoint management (create, open, delete) to GroveDb with RocksDB checkpoint-specific initialization and options, renames session snapshot to checkpointed_grovedb, widens a Cow return type with a lifetime, introduces checkpoint/compaction tests, and switches the rocksdb dependency to a git fork. Changes
Sequence Diagram(s)sequenceDiagram
autonumber
actor User
participant GroveDb
participant RocksDbStorage
participant FS as Filesystem
User->>GroveDb: create_checkpoint(path)
GroveDb->>RocksDbStorage: create_checkpoint_with_log_size(path, log_size)
RocksDbStorage->>FS: write checkpoint files (SSTs, WAL snapshot)
RocksDbStorage-->>GroveDb: Result (ok / error)
GroveDb-->>User: Result
User->>GroveDb: open_checkpoint(path)
GroveDb->>RocksDbStorage: checkpoint_rocksdb_with_path(path) [read-only opts]
RocksDbStorage->>FS: open checkpoint directory (read-only)
RocksDbStorage-->>GroveDb: RocksDbStorage instance
GroveDb-->>User: GroveDb wrapping checkpoint storage
User->>GroveDb: delete_checkpoint(path)
GroveDb->>FS: validate path depth & attempt open (safety)
FS->>GroveDb: remove_dir_all(path)
GroveDb-->>User: Result
Estimated code review effort🎯 4 (Complex) | ⏱️ ~60–90 minutes
Possibly related PRs
Suggested reviewers
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📚 Learning: 2025-09-06T12:46:28.692ZApplied to files:
🧬 Code graph analysis (1)grovedb/src/debugger.rs (1)
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🧹 Nitpick comments (3)
grovedb/src/debugger.rs (1)
175-186: Debugger sessions should likely useopen_checkpointinstead of plainopen
Session::newcurrently does:
grovedb.create_checkpoint(&path)?;let checkpointed_grovedb = GroveDb::open(path)?;Given this PR adds
GroveDb::open_checkpointbacked by RocksDB’s checkpoint‑specific, read‑only options (no compactions, mmap reads, reduced parallelism), the debugger’s per‑session DB seems like a prime consumer of that API.Consider replacing the open call with the new helper, e.g.:
Proposed refactor using `open_checkpoint`
- grovedb - .create_checkpoint(&path) - .map_err(|e| AppError::Any(e.to_string()))?; - let checkpointed_grovedb = GroveDb::open(path).map_err(|e| AppError::Any(e.to_string()))?; + grovedb + .create_checkpoint(&path) + .map_err(|e| AppError::Any(e.to_string()))?; + let checkpointed_grovedb = + GroveDb::open_checkpoint(path).map_err(|e| AppError::Any(e.to_string()))?;This keeps debugger sessions strictly read‑only and aligned with the checkpoint configuration used elsewhere in the crate.
grovedb/src/tests/test_compaction_sizes.rs (1)
19-26: Add explicit flush before final SST measurement or mark test#[ignore]The logic of
get_files_sizeand the WAL/SST ratio checks is correct, but this test lacks explicit synchronization before measuring final SST size:
- No
db.flush()call before the final assertion, so compaction may still be in progress- Asserts
sst_ratio < 1.5, which assumes settled state; on slower CI this could intermittently fail- Test itself is heavy (50 MB random writes + RocksDB background operations)
Consider either:
- Adding
db.flush().expect("flush failed")before line 113, or- Marking with
#[ignore]and running selectivelyThis preserves the diagnostic value while reducing flakiness risk.
grovedb/src/checkpoints.rs (1)
28-48: Consider additional safety checks for checkpoint deletion.The current safety checks are good:
- Path depth validation prevents root deletion
- Checkpoint validation ensures it's a valid GroveDB
However, consider these additional safeguards:
- Path canonicalization: Resolve symbolic links to prevent deleting unexpected locations
- TOCTOU race condition: There's a small window between validation (opening) and deletion where the checkpoint could be replaced
- Relative path handling: Ensure relative paths don't escape expected boundaries
Enhanced safety checks
pub fn delete_checkpoint<P: AsRef<Path>>(path: P) -> Result<(), Error> { let path = path.as_ref(); + + // Canonicalize path to resolve symbolic links and relative paths + let canonical_path = path.canonicalize() + .map_err(|e| Error::CorruptedData(format!("cannot canonicalize checkpoint path: {}", e)))?; // Safety: prevent deletion of root or near-root paths - let component_count = path.components().count(); + let component_count = canonical_path.components().count(); if component_count < 2 { return Err(Error::CorruptedData( "refusing to delete checkpoint: path too short (safety check)".to_string(), )); } // Verify this is a valid checkpoint by attempting to open it // This ensures we only delete actual GroveDB checkpoints { - let _checkpoint_db = Self::open_checkpoint(path)?; + let _checkpoint_db = Self::open_checkpoint(&canonical_path)?; // checkpoint_db is dropped here, closing the database } - std::fs::remove_dir_all(path) + std::fs::remove_dir_all(&canonical_path) .map_err(|e| Error::CorruptedData(format!("failed to delete checkpoint: {}", e))) }
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grovedb-epoch-based-storage-flags/src/lib.rs(1 hunks)grovedb/src/checkpoints.rs(1 hunks)grovedb/src/debugger.rs(3 hunks)grovedb/src/lib.rs(1 hunks)grovedb/src/tests/checkpoint_tests.rs(1 hunks)grovedb/src/tests/mod.rs(3 hunks)grovedb/src/tests/test_compaction_sizes.rs(1 hunks)storage/Cargo.toml(1 hunks)storage/src/rocksdb_storage/storage.rs(5 hunks)tutorials/src/bin/replication.rs(8 hunks)
🧰 Additional context used
📓 Path-based instructions (5)
**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
**/*.rs: Format Rust code with cargo fmt
Run cargo clippy with -D warnings and fix all lints
Files:
grovedb/src/checkpoints.rsgrovedb-epoch-based-storage-flags/src/lib.rsgrovedb/src/tests/checkpoint_tests.rsstorage/src/rocksdb_storage/storage.rsgrovedb/src/debugger.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rstutorials/src/bin/replication.rsgrovedb/src/lib.rs
{grovedb,merk,storage,costs}/src/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
{grovedb,merk,storage,costs}/src/**/*.rs: Use cost_return_on_error! for early returns while accumulating cost
Wrap errors with context (e.g., .map_err(|e| Error::CorruptedData(format!("context: {}", e))))
Files:
grovedb/src/checkpoints.rsgrovedb/src/tests/checkpoint_tests.rsstorage/src/rocksdb_storage/storage.rsgrovedb/src/debugger.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rsgrovedb/src/lib.rs
**/tests/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
**/tests/**/*.rs: Every state-modifying operation must be testable with proofs
Verify that cost calculations in tests match actual operations
Ensure reference integrity in tests (no cycles)
Files:
grovedb/src/tests/checkpoint_tests.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rs
{storage/src/**/*.rs,grovedb/src/batch/**/*.rs}
📄 CodeRabbit inference engine (CLAUDE.md)
Use transactions for multi-step operations to ensure safety
Files:
storage/src/rocksdb_storage/storage.rs
storage/src/rocksdb_storage/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
storage/src/rocksdb_storage/**/*.rs: Use Blake3 to derive 32-byte prefixes for path-based subtree isolation
Use OptimisticTransactionDB for optimistic transactions
Files:
storage/src/rocksdb_storage/storage.rs
🧠 Learnings (12)
📓 Common learnings
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to {storage/src/**/*.rs,grovedb/src/batch/**/*.rs} : Use transactions for multi-step operations to ensure safety
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to storage/src/rocksdb_storage/**/*.rs : Use OptimisticTransactionDB for optimistic transactions
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to {grovedb,merk,storage,costs}/src/**/*.rs : Wrap errors with context (e.g., .map_err(|e| Error::CorruptedData(format!("context: {}", e))))
Applied to files:
grovedb/src/checkpoints.rsgrovedb-epoch-based-storage-flags/src/lib.rsgrovedb/src/tests/checkpoint_tests.rsstorage/Cargo.tomlgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rstutorials/src/bin/replication.rsgrovedb/src/lib.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to storage/src/rocksdb_storage/**/*.rs : Use Blake3 to derive 32-byte prefixes for path-based subtree isolation
Applied to files:
grovedb/src/checkpoints.rsstorage/Cargo.tomlstorage/src/rocksdb_storage/storage.rsgrovedb/src/tests/test_compaction_sizes.rstutorials/src/bin/replication.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to **/tests/**/*.rs : Ensure reference integrity in tests (no cycles)
Applied to files:
grovedb/src/tests/checkpoint_tests.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to **/tests/**/*.rs : Every state-modifying operation must be testable with proofs
Applied to files:
grovedb/src/tests/checkpoint_tests.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to **/tests/**/*.rs : Verify that cost calculations in tests match actual operations
Applied to files:
grovedb/src/tests/checkpoint_tests.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rs
📚 Learning: 2025-12-17T18:39:16.131Z
Learnt from: QuantumExplorer
Repo: dashpay/grovedb PR: 397
File: grovedb/src/tests/provable_count_sum_tree_tests.rs:82-90
Timestamp: 2025-12-17T18:39:16.131Z
Learning: In Rust test code for grovedb, when a function returns a cost-wrapped result (CostResult), using .unwrap().map_err(|e| e) is acceptable to discard cost tracking by unwrapping the inner Result and converting the error type for test helpers. This pattern should be applied across test files that interact with cost-wrapped results, not just a single test, to ensure consistency in how test helpers handle costs.
Applied to files:
grovedb/src/tests/checkpoint_tests.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to storage/src/rocksdb_storage/**/*.rs : Use OptimisticTransactionDB for optimistic transactions
Applied to files:
storage/Cargo.tomlstorage/src/rocksdb_storage/storage.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to {storage/src/**/*.rs,grovedb/src/batch/**/*.rs} : Use transactions for multi-step operations to ensure safety
Applied to files:
storage/src/rocksdb_storage/storage.rsgrovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rstutorials/src/bin/replication.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to {grovedb/src/operations/proof,merk/src/proofs}/**/*.rs : Never trust unverified proofs; always verify before use
Applied to files:
grovedb/src/tests/mod.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to grovedb/src/batch/**/*.rs : Prefer batch operations for multiple related changes
Applied to files:
grovedb/src/tests/mod.rsgrovedb/src/tests/test_compaction_sizes.rstutorials/src/bin/replication.rs
📚 Learning: 2025-02-18T08:17:30.690Z
Learnt from: fominok
Repo: dashpay/grovedb PR: 345
File: grovedb/src/operations/delete/v1.rs:19-35
Timestamp: 2025-02-18T08:17:30.690Z
Learning: Refactoring suggestions for legacy code should be avoided as they are considered out of scope for feature PRs. This includes the function `delete_internal_on_transaction` in `grovedb/src/operations/delete/v1.rs` which is legacy code.
Applied to files:
tutorials/src/bin/replication.rsgrovedb/src/lib.rs
🧬 Code graph analysis (3)
grovedb/src/checkpoints.rs (1)
storage/src/rocksdb_storage/storage.rs (3)
path(190-190)create_checkpoint(567-573)checkpoint_rocksdb_with_path(139-151)
grovedb/src/debugger.rs (1)
grovedb/src/lib.rs (2)
open(281-284)path(1042-1044)
grovedb/src/tests/test_compaction_sizes.rs (3)
grovedb/src/lib.rs (6)
path(1042-1044)open(281-284)None(439-439)None(1111-1111)None(1158-1158)None(1187-1187)grovedb-version/src/version/mod.rs (1)
latest(26-30)grovedb-element/src/element/constructor.rs (2)
empty_tree(11-13)new_item(61-63)
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🔇 Additional comments (16)
grovedb/src/tests/mod.rs (1)
9-9: Test module wiring and refactor intogeneral_testslook consistent
checkpoint_testsandtest_compaction_sizesare correctly added to the test suite, and wrapping the existing tests intomod general_testskeeps visibility and imports intact viasuper::*. I don’t see functional or structural issues here.Also applies to: 43-43, 1035-1035
storage/Cargo.toml (1)
21-22: Git-pinned RocksDB fork is fine short term; ensure tracking and reversion planUsing the QuantumExplorer RocksDB fork with a fixed rev is reasonable to unblock
create_checkpoint_with_log_size, but it does shift risk to this repo:
- You’re now tied to that specific commit’s API/behavior and build flags.
- Future upstream releases (once PR 1055 is merged) should replace this; the TODO captures that but it’s easy to forget.
I suggest:
- Adding a brief note in your release/upgrade docs or an issue referencing this TODO so it’s not lost.
- Verifying that this rev is built with the same features you relied on from crates.io (compression, jemalloc, etc., if any).
grovedb-epoch-based-storage-flags/src/lib.rs (1)
677-683:map_cow_some_element_flags_reflifetime widening is sound and non-breakingChanging the return type to
Result<Option<Cow<'_, Self>>, StorageFlagsError>is type-correct and keeps current behavior (onlyCow::Ownedis constructed). This makes the API future-proof if you later want to return borrowed flags without forcing allocations.tutorials/src/bin/replication.rs (4)
11-12: LGTM! Improved constant naming.The renaming from Greek characters (ΚΕΥ) to ASCII (KEY) improves readability and portability across different environments and editors.
83-85: LGTM! Simplified return.Direct return is more concise and idiomatic.
114-114: LGTM! Idiomatic emptiness check.Using
is_empty()is the preferred Rust pattern for checking collection emptiness.
265-265: LGTM! Improved error handling.Using
value?for error propagation is safer and more idiomatic thanunwrap().grovedb/src/lib.rs (1)
130-130: LGTM! Good module organization.Extracting checkpoint functionality to a dedicated module improves code organization and maintainability.
storage/src/rocksdb_storage/storage.rs (2)
87-107: LGTM! Appropriate read-only checkpoint configuration.The options correctly configure RocksDB for read-only checkpoint access:
- Prevents any writes (no creation, no mmap writes, no auto-compactions)
- Enables mmap reads for performance
- Reduces parallelism to minimize resource usage
119-119: LGTM! Clear WAL flush behavior.Setting
DEFAULT_LOG_SIZE_FOR_CHECKPOINT_FLUSHtou64::MAXwith the comment "Never flush" clearly indicates the checkpoint strategy: preserve the WAL without forcing a flush, keeping checkpoints lightweight at the cost of WAL replay on open.Also applies to: 567-573
grovedb/src/checkpoints.rs (2)
8-11: LGTM! Clean delegation.Simple delegation to the storage layer with appropriate error conversion.
13-17: LGTM! Proper read-only checkpoint opening.Correctly uses the dedicated checkpoint initialization path with read-only configuration.
grovedb/src/tests/checkpoint_tests.rs (4)
11-168: LGTM! Comprehensive checkpoint functionality test.The test thoroughly verifies:
- Checkpoint creation and opening
- Data retrieval from checkpoints
- Isolation between original DB and checkpoint (bidirectional independence)
Clear assertions and good test structure.
170-225: LGTM! Thorough checkpoint deletion test.The test verifies all key aspects:
- Checkpoint creation and accessibility
- Successful deletion
- No impact on original database
Good test coverage.
230-309: LGTM! WAL preservation test is well-designed.The test correctly verifies that when data size is under the 50MB threshold, the WAL is preserved in the checkpoint rather than being flushed to SST files.
Good use of filesystem checks to verify WAL presence and appropriate data size calculations (490 items × 100KB ≈ 49MB).
327-503: Well-documented ignored test with appropriate safeguards.The test is properly marked
#[ignore]with clear re-enable criteria (pending upstream RocksDB bug fix). The test logic is sound—it incrementally writes data until WAL exceeds a 50 MiB threshold, then verifies checkpoint WAL is empty (indicating flush was triggered). The implementation includes good safeguards: a 62 MiB limit prevents memtable auto-flush from invalidating test assumptions, and comprehensive debugging output aids troubleshooting.Note: The specific GitHub PR reference (#14193) could not be independently verified in publicly available RocksDB repositories, though the upstream checkpoint/WAL flush behavior described aligns with RocksDB's documented
log_size_for_flushparameter behavior and historical fixes like PR #9208.
| pub fn checkpoint_rocksdb_with_path<P: AsRef<Path>>(path: P) -> Result<Self, Error> { | ||
| let db = Db::open_cf_descriptors( | ||
| &READ_ONLY_CHECKPOINTS_OPTS, | ||
| &path, | ||
| [ | ||
| ColumnFamilyDescriptor::new(AUX_CF_NAME, DEFAULT_OPTS.clone()), | ||
| ColumnFamilyDescriptor::new(ROOTS_CF_NAME, DEFAULT_OPTS.clone()), | ||
| ColumnFamilyDescriptor::new(META_CF_NAME, DEFAULT_OPTS.clone()), | ||
| ], | ||
| ) | ||
| .map_err(RocksDBError)?; | ||
| Ok(RocksDbStorage { db }) | ||
| } |
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Use read-only options for column families in checkpoint mode.
The DB is opened with READ_ONLY_CHECKPOINTS_OPTS which explicitly disables write-related settings (create_if_missing, create_missing_column_families, allow_mmap_writes), but column families are created with DEFAULT_OPTS which enables these write-focused settings. This creates an inconsistency where the database-level read-only contract is violated at the column family level.
Column families should use a read-only configuration (or a minimal set of options without write-enabling features) to maintain consistency with the DB-level read-only constraints.
🤖 Prompt for AI Agents
In storage/src/rocksdb_storage/storage.rs around lines 139 to 151, the DB is
opened with READ_ONLY_CHECKPOINTS_OPTS but the ColumnFamilyDescriptor instances
use DEFAULT_OPTS which enable write-related settings; replace those DEFAULT_OPTS
with a read-only/minimal option set (e.g. clone of READ_ONLY_CHECKPOINTS_OPTS or
a dedicated READ_ONLY_CF_OPTS) that does not set create_if_missing,
create_missing_column_families, allow_mmap_writes, etc., so the column-family
options match the database-level read-only constraints before calling
Db::open_cf_descriptors.
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⚠️ Outside diff range comments (1)
grovedb/src/debugger.rs (1)
174-187: Useopen_checkpoint()instead ofopen()for read-only checkpoint access.Line 181 uses
GroveDb::open(path)to open the checkpoint, but this PR introducesopen_checkpoint()specifically for read-only checkpoint access with optimized RocksDB options (disabled compactions, mmap reads, reduced parallelism). Since the debugger only reads from checkpoints and never writes to them, you should use the optimized checkpoint-specific API.🔎 Proposed fix
- let checkpointed_grovedb = GroveDb::open(path).map_err(|e| AppError::Any(e.to_string()))?; + let checkpointed_grovedb = GroveDb::open_checkpoint(path).map_err(|e| AppError::Any(e.to_string()))?;
♻️ Duplicate comments (1)
grovedb/src/debugger.rs (1)
236-236: LGTM! All call sites correctly updated.All four call sites (lines 236, 264, 293, 310) have been updated to use
get_checkpointed_grovedb, resolving the compilation failure flagged in the previous review.Also applies to: 264-264, 293-293, 310-310
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**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
**/*.rs: Format Rust code with cargo fmt
Run cargo clippy with -D warnings and fix all lints
Files:
grovedb/src/debugger.rs
{grovedb,merk,storage,costs}/src/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
{grovedb,merk,storage,costs}/src/**/*.rs: Use cost_return_on_error! for early returns while accumulating cost
Wrap errors with context (e.g., .map_err(|e| Error::CorruptedData(format!("context: {}", e))))
Files:
grovedb/src/debugger.rs
🧠 Learnings (3)
📓 Common learnings
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to storage/src/rocksdb_storage/**/*.rs : Use OptimisticTransactionDB for optimistic transactions
📚 Learning: 2025-02-18T08:17:30.690Z
Learnt from: fominok
Repo: dashpay/grovedb PR: 345
File: grovedb/src/operations/delete/v1.rs:19-35
Timestamp: 2025-02-18T08:17:30.690Z
Learning: Refactoring suggestions for legacy code should be avoided as they are considered out of scope for feature PRs. This includes the function `delete_internal_on_transaction` in `grovedb/src/operations/delete/v1.rs` which is legacy code.
Applied to files:
grovedb/src/debugger.rs
📚 Learning: 2025-09-06T12:46:28.692Z
Learnt from: CR
Repo: dashpay/grovedb PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-09-06T12:46:28.692Z
Learning: Applies to {grovedb,merk,storage,costs}/src/**/*.rs : Wrap errors with context (e.g., .map_err(|e| Error::CorruptedData(format!("context: {}", e))))
Applied to files:
grovedb/src/debugger.rs
🧬 Code graph analysis (1)
grovedb/src/debugger.rs (1)
grovedb/src/lib.rs (2)
open(282-285)path(1043-1045)
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🔇 Additional comments (2)
grovedb/src/debugger.rs (2)
148-166: LGTM! Method rename and implementation are correct.The rename from
get_snapshottoget_checkpointed_grovedbaligns with the PR's checkpoint terminology. The implementation correctly updateslast_accessand returns a read guard to the checkpointed GroveDB instance.
168-172: LGTM! Session struct field rename is consistent.The field rename from
snapshottocheckpointed_grovedbis consistent with the overall refactoring and correctly reflects that sessions now work with checkpointed GroveDB instances.
1 participant
Issue being fixed or feature implemented
Improved checkpoint functionality for GroveDB with proper read-only checkpoint opening, safe deletion, and configurable WAL flushing behavior.
What was done?
Checkpoint API Improvements
Storage Layer Changes
Tests
Note on Ignored Test
test_checkpoint_wal_over_threshold_is_flushed is ignored due to a bug in RocksDB where log_size_for_flush parameter is non-functional. Re-enable when facebook/rocksdb#14193 is merged.
How Has This Been Tested?
Breaking Changes
None. This adds new public API methods without modifying existing behavior.
Summary by CodeRabbit
New Features
Tests
Chores
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