refactor(v2): reduce leaf I/O #1044
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WalkthroughThis pull request introduces a new benchmarking command for the IAVL tree along with extensive updates across the codebase. A new Cobra-based command in the bench package enables standard development benchmarks with environment configuration, CPU profiling, and Prometheus metrics integration. Additional modifications include refactoring tests to use default tree options, improvements to metrics handling via new types, enhanced logging through a debug logger, and streamlined tree and SQLite operations. A deprecated NodePool test was removed, and concurrency tests were added for SQLite operations. Changes
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Actionable comments posted: 3
🔭 Outside diff range comments (1)
v2/sqlite_writer.go (1)
443-464: 🛠️ Refactor suggestionConsider adding transaction rollback on error.
The save operation should consider rolling back the transaction if an error occurs during the save process.
func (w *sqlWriter) saveTree(tree *Tree) error { defer tree.metrics.MeasureSince(time.Now(), metricsNamespace, "db_write") + var rollback bool + defer func() { + if rollback { + if err := tree.sql.RollbackTx(); err != nil { + tree.logger.Error("failed to rollback transaction", "error", err) + } + } + }() batch := &sqliteBatch{ sql: tree.sql, tree: tree, size: 200_000, logger: w.sql.logger, } saveSig := &saveSignal{batch: batch, root: tree.root, version: tree.version, wantCheckpoint: tree.shouldCheckpoint} w.treeCh <- saveSig w.leafCh <- saveSig treeResult := <-w.treeResult leafResult := <-w.leafResult tree.metrics.IncrCounter(float32(len(tree.leaves)), metricsNamespace, "db_write_leaf") err := errors.Join(treeResult.err, leafResult.err) + if err != nil { + rollback = true + } return err }
🧹 Nitpick comments (13)
v2/metrics/metrics.go (3)
48-83: **Silent ignoring of unexpected key arguments **The IncrCounter method returns immediately if
len(keys) != 2, silently ignoring any extra or fewer arguments. This might unintentionally hide incorrect usage. Consider at least logging a warning in that branch or documenting the requirement for exactly two keys.if len(keys) != 2 { - return + // Consider logging or handling the unexpected case: + // log.Printf("IncrCounter called with %d keys, expected 2", len(keys)) return }
145-178: **Automatic reset of metrics in QueryReport **Calling s.SetQueryZero() within QueryReport unexpectedly clears metrics data right after reporting. If consumers prefer to preserve historical stats, consider making the reset optional or moving it outside QueryReport.
func (s *StructMetrics) QueryReport(bins int) error { ... // after printing stats - s.SetQueryZero() + // optionally reset metrics or rely on caller to reset return nil }
191-202: **Add method concurrency caution **The Add method appends slices and updates totals, which can lead to data races if multiple goroutines call it concurrently. Consider adding a mutex or clarifying single-thread access.
v2/sqlite_test.go (4)
12-12: **Experimental golang.org/x/exp/rand usage **You're using "golang.org/x/exp/rand" for randomness. Although it can be suitable for certain cases, note that it's an experimental package. Consider "math/rand" unless specific "exp/rand" features are required.
49-63: **Transaction batch insertion logic **Inserting data in large batches (200,000 records) helps performance. If concurrency is expanded in the future, ensure each goroutine uses its own transaction or synchronization protocol. Otherwise, no immediate concerns here.
158-211: **Test_ConcurrentDetach concurrency issue **This test is skipped, but it demonstrates concurrency with DETACH. The panic is known. If solving it in production is important, consider rearchitecting the detach or restricting concurrent reads. Let us know if you’d like assistance investigating further or proposing a fix.
213-267: **Test_ConcurrentQuery is skipped due to panic **Similar concurrency/panic scenario. If concurrency usage is needed, we can research defensive query patterns or alternative concurrency-safe solutions. Let us know if you’d like further help.
v2/sqlite.go (2)
313-316: Adequate instrumentation in getLeaf.Measuring timings with
MeasureSinceand incrementing counters is a solid approach to monitor database “get leaf” performance. Ensure concurrency safety if multiple goroutines may invoke the same statements (or at least confirm the library’s concurrency guarantees).
710-712: Bitwise approach to detect leaf sequences.Using
seq&(1<<31) != 0is a concise way to differentiate leaf nodes by sequence number, but remember to document this bitwise approach so it’s clear why bit 31 marks leaves.v2/cmd/bench/bench.go (2)
48-61: Consider handling deferred cleanup in a more robust way.The CPU profile cleanup could be more robust by checking for errors during file closure.
- defer func() { - pprof.StopCPUProfile() - f.Close() - }() + defer func() { + pprof.StopCPUProfile() + if err := f.Close(); err != nil { + logger.Error("failed to close CPU profile file", "error", err) + } + }()
147-148: Implement missing metrics methods.The
IncrCounterandMeasureSincemethods are currently empty stubs. Consider implementing them to provide complete metrics functionality.Would you like me to help implement these methods to track additional metrics like operation counts and durations?
Also applies to: 160-160
v2/multitree.go (2)
123-138: Consider adding connection pooling for better resource management.The current implementation creates a new connection for each tree. Consider implementing connection pooling to manage database connections more efficiently.
313-456: Consider breaking down the TestBuild method for better maintainability.The TestBuild method is quite long (>140 lines) and handles multiple responsibilities. Consider extracting the reporting and metrics collection logic into separate methods.
+func (mt *MultiTree) generateReport(workingBytes uint64, workingSize, writeLeaves int64, writeTime time.Duration, hashCount int64) error { + // ... reporting logic ... +} +func (mt *MultiTree) collectMetrics(tr *Tree) (uint64, int64, int64, time.Duration, int64) { + // ... metrics collection logic ... +} func (mt *MultiTree) TestBuild(opts *testutil.TreeBuildOptions) (int64, error) { // ... existing setup code ... - report := func() error { - // ... current report logic ... - } + report := mt.generateReport // ... rest of the method ... }
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⛔ Files ignored due to path filters (1)
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📒 Files selected for processing (12)
v2/cmd/bench/bench.go(1 hunks)v2/cmd/root.go(2 hunks)v2/iterator_test.go(3 hunks)v2/logger.go(2 hunks)v2/metrics/metrics.go(4 hunks)v2/multitree.go(7 hunks)v2/pool_test.go(0 hunks)v2/sqlite.go(12 hunks)v2/sqlite_test.go(7 hunks)v2/sqlite_writer.go(3 hunks)v2/tree.go(16 hunks)v2/tree_test.go(11 hunks)
💤 Files with no reviewable changes (1)
- v2/pool_test.go
🧰 Additional context used
🪛 golangci-lint (1.62.2)
v2/cmd/bench/bench.go
62-62: undefined: iavl
(typecheck)
73-73: undefined: iavl
(typecheck)
76-76: undefined: iavl
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81-81: undefined: iavl
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⏰ Context from checks skipped due to timeout of 90000ms (3)
- GitHub Check: Test
- GitHub Check: Analyze (go)
- GitHub Check: Benchmarks
🔇 Additional comments (57)
v2/metrics/metrics.go (7)
23-26: **Interface assignment for compile-time checks **These lines confirm that both StructMetrics and NilMetrics correctly implement the Proxy interface at compile time. No issues here.
28-35: **NilMetrics no-op approach is reasonable **The NilMetrics struct provides no-op methods, ensuring that metric calls can be safely ignored when metrics are disabled. This is a straightforward and useful pattern for conditional metric collection.
36-39: **StructMetrics embedding design **StructMetrics embeds both TreeMetrics and DbMetrics as pointers, which allows aggregated metric handling for tree- and database-related operations. This design is concise and clear.
41-46: **Ensure pointers are properly initialized **The constructor NewStructMetrics correctly initializes the embedded pointers to TreeMetrics and DbMetrics. This is a sound approach that reduces the chance of nil-pointer references.
85-85: **SetGauge method is intentionally a no-op **Having a no-op for SetGauge is acceptable if gauge metrics are not needed yet. This preserves the Proxy interface without forcing the user to handle gauge-based metrics.
114-114: **Added TreeHash metric **TreeHash is now tracked as an int64. Ensure that it’s updated or reported consistently if needed. No immediate concerns here.
182-189: **SetQueryZero concurrency note **SetQueryZero resets various slice fields to nil and integer fields to 0. If other goroutines are updating these metrics at the same time, this might lead to data races. Ensure this reset call is guarded by locks or that usage is strictly single-threaded.
v2/sqlite_test.go (8)
4-4: **sync import introduced for concurrency usage **Importing "sync" is appropriate given the wait groups and goroutines below.
16-17: **Initialization code for TestBuildSqlite **Using t.TempDir() for test isolation and calling sql.nextShard(1) as part of setup is logical. Requiring no error is good practice. No issues spotted.
Also applies to: 31-34
35-46: **Schema creation and indexing approach **Creating tables and indexes up front is a sound approach for a large data load test. The commented-out alternative index suggests awareness of performance trade-offs. This is well-structured.
98-102: **Commit and new transaction in insertion loop **Frequent commits and re-begins manage large data sets without massive transaction overhead. The approach is valid.
114-114: **Final commit for the insertion process **Wrapping up the final commit ensures all data is persisted. No issues spotted.
125-125: **TestNodeKeyFormat checks **Ensuring nk is non-nil and logging the computed key is a straightforward debug test. Good addition for clarity.
Also applies to: 127-127
148-148: **Logging mmap_size result **Logging the result of PRAGMA mmap_size can help diagnose memory-mapped configurations. No concerns here.
269-324: **Test_ConcurrentIndexRead concurrency approach **Queries and CREATE INDEX run in parallel. There might be potential for data race or locked database if reading/writing overlap incorrectly. Verify that the test reliably passes under repeated runs. Consider retry logic or locking if sporadic failures occur.
v2/tree_test.go (12)
32-34: **Adding MetricsProxy to TreeOptions **Enabling metrics via NewStructMetrics is consistent with the rest of the PR. This ensures tree operations can be tracked.
43-44: **Using TestBuild on multiTree **Swapping in multiTree.TestBuild allows a more centralized build path. The usage here is straightforward.
53-57: **Creating multiTree with metrics and checkpoint intervals **Providing checkpoint intervals and a metrics proxy is a clean approach for frequent states and metric tracking. No concerns spotted.
64-65: **Capturing build errors **Requiring no error after multiTree.TestBuild ensures correctness. Straightforward test coverage.
73-73: **ImportMultiTree usage **ImportMultiTree fosters continuity by importing a prior snapshot. Good approach to test snapshot-based reinitializations.
81-83: **Completing the new build and closing **Verifying correctness on the final build and closing the multiTree helps ensure no resource leaks. Looks good.
98-98: **NewTree creation in sqlite test variant **This snippet ensures a minimal Tree is created with default options. No issues found.
110-110: **No-db Tree creation variant **Creating the Tree without a DB is valid for memory-only or ephemeral tests. This expands test coverage.
162-165: **Using TempDir and NewSqliteDb for an empty tree test **Consistent use of t.TempDir plus the default TreeOptions for an empty tree scenario is a good approach to verifying basic usage.
217-218: **Adjusting the default TreeOptions **Updating CheckpointInterval to 100 for replay tests aligns with smaller incremental snapshots. No concerns.
278-278: **Reloading and reusing Tree with new DB instances **Re-opening the DB across versions ensures the replay logic is robust. The approach is consistent with the partial ingestion pattern.
Also applies to: 286-286
335-335: **Logging version and hash for debugging **Printing version and hash is helpful for verifying prune logic and incremental states. Looks fine.
v2/sqlite.go (16)
28-29: Introduce logger and metrics fields together.Adding both
LoggerandMetricsfields inSqliteDbOptionshelps standardize logging and metrics usage across the database. This centralizes configuration and avoids scattered handling in multiple places.
69-71: Use of NilMetrics as a safe default.Falling back to
metrics.NilMetrics{}whenopts.Metricsis nil ensures the system won't break if metrics aren't explicitly configured. This is a clean approach that preventsnilreferences.
74-76: Graceful logger fallback.Defaulting to a no-op logger when
opts.Loggeris unset avoidsnilchecks throughout the code and maintains robust logging behavior.
351-351: Updated getNode signature.Removing the
*sqlite3.Stmtparameter fromgetNodehelps encapsulate query logic, simplifying usage. Verify that all callers have been updated accordingly.
353-356: Shard-based query retrieval.Fetching the database statement via
sql.getShardQuery(...)clarifies how nodes map to sharded tables. It looks correct and aligns with the new design.
357-360: Branch metrics instrumentation.Similar to
getLeaf, measuring durations and incrementing counters provides valuable insights into performance for branch lookups.
715-717: Prevent child retrieval from leaf nodes (right child).Stopping attempts at child retrieval on leaf nodes helps avoid invalid lookups.
719-723: Conditional retrieval of node’s right child.Shifting the logic between
getLeafandgetNodebased on the leaf bit is consistent with the approach inisLeafSeq. This clarifies node type resolution.
724-725: Check for missing right child.Explicitly erroring out if
node.rightNodeis stillniloffers an immediate signal of data corruption or missing references.
735-737: Prevent child retrieval from leaf nodes (left child).Similar check for the left child ensures consistent enforcement that leaf nodes have no children.
739-743: Conditional retrieval of node’s left child.Mirroring the logic from
getRightNode, gating betweengetLeafandgetNodeis a straightforward, uniform pattern.
744-745: Check for missing left child.Same approach as the right side. Quick erroring if
node.leftNode == nilis helpful for diagnosing incomplete data.
993-993: Ensure sequences reset before replay iteration.Calling
tree.resetSequences()after stepping versions helps the tree remain consistent. Confirm that external references to sequence counters are safely updated in the process.
1005-1007: Validate leafSequence upon set.Double-checking the
tree.leafSequencealigns with the persisted sequence prevents mismatched data from creeping into the tree. The error message is descriptive and helpful.
1016-1016: Validate leafSequence upon delete.Same approach for delete operations; nice consistency.
1030-1030: Final sequence reset.Resetting sequences once the replay completes helps keep the tree in a known state.
v2/cmd/root.go (1)
4-4: Add bench command support.Importing
"github.com/cosmos/iavl/v2/cmd/bench"and registeringbench.Command()extends the CLI with a new benchmarking command. This is a clear improvement for performance testing.Also applies to: 23-23
v2/logger.go (2)
3-6: Added imports for debug logging.Importing
log/slogandosis necessary for the new debug logger, which writes debug-level logs to stdout.
45-47: New debug logger.Providing
NewDebugLogger()for debug-level logging is beneficial for diagnostics. This is a straightforward and unobtrusive addition.v2/iterator_test.go (1)
16-17: LGTM! Good use of default options.Using
DefaultTreeOptions()improves consistency and maintainability by centralizing tree configuration.v2/multitree.go (1)
34-47: LGTM! Good defensive programming with metrics initialization.The nil check for
MetricsProxyensures safe operation by providing a default no-op implementation.v2/sqlite_writer.go (1)
44-58: LGTM! Good defensive programming with nil checks.The addition of the nil check for SQL before accessing the logger improves robustness.
v2/tree.go (8)
14-17: LGTM! Effective sequence space partitioning.The separation of branch and leaf sequences using
leafSequenceStart = 1 << 31effectively partitions the sequence space, making it easier to distinguish between branch and leaf nodes.
29-29: LGTM! Enhanced metrics handling and sequence management.The changes improve the code in several ways:
- More flexible metrics handling through
metrics.Proxy- Clear separation of branch and leaf sequences
- Better field naming for improved readability
Also applies to: 50-58
579-598: LGTM! Robust sequence management implementation.The sequence management methods are well-implemented with:
- Clear separation of branch and leaf sequences
- Protection against leaf sequence underflow
- Proper sequence initialization
606-610: LGTM! Consistent sequence assignment.The method correctly assigns sequences based on node type, maintaining the sequence space partitioning.
292-292: LGTM! Consistent metrics naming.All metrics now use the
metricsNamespaceconstant, ensuring consistent naming across operations.Also applies to: 311-311, 337-337, 344-344, 346-346, 374-374, 388-388, 473-473
646-670: LGTM! Clear method naming and consistent sequence usage.The method rename to
NewLeafNodebetter reflects its purpose, and it correctly uses the leaf sequence space.
640-640: LGTM! Appropriate sequence usage for deletes.Using leaf sequence for delete operations is consistent with the sequence space partitioning.
1-717: LGTM! High-quality implementation of sequence space partitioning.The changes effectively implement sequence space partitioning between branch and leaf nodes, which should help reduce I/O operations as intended in the PR objectives. The implementation is consistent, well-documented, and follows best practices.
| func (s *StructMetrics) MeasureSince(start time.Time, keys ...string) { | ||
| dur := time.Since(start) | ||
| if len(keys) != 2 { | ||
| return | ||
| } | ||
| k := keys[1] | ||
| switch k { | ||
| case "db_get": | ||
| s.QueryDurations = append(s.QueryDurations, dur) | ||
| s.QueryTime += dur | ||
| s.QueryCount++ | ||
| case "db_write": | ||
| s.WriteDurations = append(s.WriteDurations, dur) | ||
| s.WriteTime += dur | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
**Potential concurrency issue with appending to slices **
MeasureSince appends durations to slices like QueryDurations and WriteDurations. If multiple goroutines call this method concurrently, it may cause data races or slice growth conflicts. Consider protecting these fields with synchronization or moving to a thread-safe structure (e.g., sync.Mutex or channels).
func (s *StructMetrics) MeasureSince(start time.Time, keys ...string) {
+ // Potential concurrency: protect with mutex if called from multiple goroutines
dur := time.Since(start)
...
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (s *StructMetrics) MeasureSince(start time.Time, keys ...string) { | |
| dur := time.Since(start) | |
| if len(keys) != 2 { | |
| return | |
| } | |
| k := keys[1] | |
| switch k { | |
| case "db_get": | |
| s.QueryDurations = append(s.QueryDurations, dur) | |
| s.QueryTime += dur | |
| s.QueryCount++ | |
| case "db_write": | |
| s.WriteDurations = append(s.WriteDurations, dur) | |
| s.WriteTime += dur | |
| } | |
| } | |
| func (s *StructMetrics) MeasureSince(start time.Time, keys ...string) { | |
| // Potential concurrency: protect with mutex if called from multiple goroutines | |
| dur := time.Since(start) | |
| if len(keys) != 2 { | |
| return | |
| } | |
| k := keys[1] | |
| switch k { | |
| case "db_get": | |
| s.QueryDurations = append(s.QueryDurations, dur) | |
| s.QueryTime += dur | |
| s.QueryCount++ | |
| case "db_write": | |
| s.WriteDurations = append(s.WriteDurations, dur) | |
| s.WriteTime += dur | |
| } | |
| } |
| return nil, fmt.Errorf("failed to get right node node_key=%s height=%d path=%s: %w", | ||
| node.leftNodeKey, node.subtreeHeight, sql.opts.Path, err) |
There was a problem hiding this comment.
Mismatch in error message.
The error string says "failed to get right node" but references node.leftNodeKey. This likely leads to confusion. Update the error text to accurately describe the left node.
Proposed fix:
- return nil, fmt.Errorf("failed to get right node node_key=%s height=%d path=%s: %w",
- node.leftNodeKey, node.subtreeHeight, sql.opts.Path, err)
+ return nil, fmt.Errorf("failed to get left node node_key=%s height=%d path=%s: %w",
+ node.leftNodeKey, node.subtreeHeight, sql.opts.Path, err)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| return nil, fmt.Errorf("failed to get right node node_key=%s height=%d path=%s: %w", | |
| node.leftNodeKey, node.subtreeHeight, sql.opts.Path, err) | |
| return nil, fmt.Errorf("failed to get left node node_key=%s height=%d path=%s: %w", | |
| node.leftNodeKey, node.subtreeHeight, sql.opts.Path, err) |
| http.Handle("/metrics", promhttp.Handler()) | ||
| go func() { | ||
| err := http.ListenAndServe(":2112", nil) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| }() |
There was a problem hiding this comment.
Handle HTTP server errors more gracefully.
The current implementation panics on HTTP server errors, which is not ideal for a long-running service.
- go func() {
- err := http.ListenAndServe(":2112", nil)
- if err != nil {
- panic(err)
- }
- }()
+ go func() {
+ if err := http.ListenAndServe(":2112", nil); err != nil && !errors.Is(err, http.ErrServerClosed) {
+ logger.Error("metrics server failed", "error", err)
+ }
+ }()📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| http.Handle("/metrics", promhttp.Handler()) | |
| go func() { | |
| err := http.ListenAndServe(":2112", nil) | |
| if err != nil { | |
| panic(err) | |
| } | |
| }() | |
| http.Handle("/metrics", promhttp.Handler()) | |
| go func() { | |
| if err := http.ListenAndServe(":2112", nil); err != nil && !errors.Is(err, http.ErrServerClosed) { | |
| logger.Error("metrics server failed", "error", err) | |
| } | |
| }() |
There was a problem hiding this comment.
Actionable comments posted: 2
♻️ Duplicate comments (1)
v2/cmd/bench/bench.go (1)
137-143:⚠️ Potential issueHandle HTTP server errors more gracefully.
The current implementation panics on HTTP server errors, which is not ideal for a long-running service.
http.Handle("/metrics", promhttp.Handler()) go func() { - err := http.ListenAndServe(":2112", nil) - if err != nil { - panic(err) - } + if err := http.ListenAndServe(":2112", nil); err != nil && !errors.Is(err, http.ErrServerClosed) { + logger.Error("metrics server failed", "error", err) + } }()
🧹 Nitpick comments (3)
v2/cmd/bench/bench.go (3)
63-67: Make tree options configurable via flags.The tree options contain hardcoded values that should be configurable through command-line flags for better flexibility.
Add these flags to the command:
func benchCommand() *cobra.Command { var ( dbPath string changelogPath string loadSnapshot bool usePrometheus bool cpuProfile string + checkpointInterval int + evictionDepth int ) // ... command setup ... cmd.Flags().IntVar(&checkpointInterval, "checkpoint-interval", 80, "checkpoint interval for the tree") cmd.Flags().IntVar(&evictionDepth, "eviction-depth", 22, "eviction depth for the tree") // ... in RunE ... treeOpts := iavl.DefaultTreeOptions() - treeOpts.CheckpointInterval = 80 + treeOpts.CheckpointInterval = checkpointInterval treeOpts.StateStorage = true treeOpts.HeightFilter = 1 - treeOpts.EvictionDepth = 22 + treeOpts.EvictionDepth = evictionDepth
96-99: Remove or document commented code.The commented-out code appears to be alternative configuration values. If these are important test cases, they should be documented or moved to a separate configuration file.
Either remove the commented code or document its purpose:
- // opts.Until = 1_000 - // opts.UntilHash = "557663181d9ab97882ecfc6538e3b4cfe31cd805222fae905c4b4f4403ca5cda" + // Test case for larger dataset: + // opts.Until = 1_000 + // opts.UntilHash = "557663181d9ab97882ecfc6538e3b4cfe31cd805222fae905c4b4f4403ca5cda"
147-148: Document empty method implementations.Empty method implementations should be documented to explain why they're not implemented.
+// IncrCounter is not implemented as it's not needed for the current metrics collection func (p *prometheusMetricsProxy) IncrCounter(_ float32, _ ...string) { } +// MeasureSince is not implemented as it's not needed for the current metrics collection func (p *prometheusMetricsProxy) MeasureSince(_ time.Time, _ ...string) {}Also applies to: 160-160
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v2/cmd/bench/bench.go(1 hunks)
🧰 Additional context used
🪛 golangci-lint (1.62.2)
v2/cmd/bench/bench.go
62-62: undefined: iavl
(typecheck)
73-73: undefined: iavl
(typecheck)
76-76: undefined: iavl
(typecheck)
81-81: undefined: iavl
(typecheck)
| func (p *prometheusMetricsProxy) SetGauge(val float32, keys ...string) { | ||
| k := keys[1] | ||
| switch k { | ||
| case "working_size": | ||
| p.workingSize.Set(float64(val)) | ||
| case "working_bytes": | ||
| p.workingBytes.Set(float64(val)) | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Make SetGauge more robust.
The current implementation assumes the keys slice has at least 2 elements and doesn't validate the key value.
func (p *prometheusMetricsProxy) SetGauge(val float32, keys ...string) {
+ if len(keys) < 2 {
+ return
+ }
k := keys[1]
switch k {
case "working_size":
p.workingSize.Set(float64(val))
case "working_bytes":
p.workingBytes.Set(float64(val))
+ default:
+ // Log unexpected key for debugging
+ logger.Debug("unexpected metric key", "key", k)
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (p *prometheusMetricsProxy) SetGauge(val float32, keys ...string) { | |
| k := keys[1] | |
| switch k { | |
| case "working_size": | |
| p.workingSize.Set(float64(val)) | |
| case "working_bytes": | |
| p.workingBytes.Set(float64(val)) | |
| } | |
| } | |
| func (p *prometheusMetricsProxy) SetGauge(val float32, keys ...string) { | |
| if len(keys) < 2 { | |
| return | |
| } | |
| k := keys[1] | |
| switch k { | |
| case "working_size": | |
| p.workingSize.Set(float64(val)) | |
| case "working_bytes": | |
| p.workingBytes.Set(float64(val)) | |
| default: | |
| // Log unexpected key for debugging | |
| logger.Debug("unexpected metric key", "key", k) | |
| } | |
| } |
| if err := cmd.MarkFlagRequired("changelog"); err != nil { | ||
| panic(err) | ||
| } | ||
| if err := cmd.MarkFlagRequired("db"); err != nil { | ||
| panic(err) | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Replace panic with proper error handling in flag validation.
Using panic for flag validation is not a good practice. Since this is happening during command initialization, return an error instead.
- if err := cmd.MarkFlagRequired("changelog"); err != nil {
- panic(err)
- }
- if err := cmd.MarkFlagRequired("db"); err != nil {
- panic(err)
- }
+ for _, flag := range []string{"changelog", "db"} {
+ if err := cmd.MarkFlagRequired(flag); err != nil {
+ return nil
+ }
+ }Committable suggestion skipped: line range outside the PR's diff.
There was a problem hiding this comment.
Actionable comments posted: 1
♻️ Duplicate comments (1)
v2/metrics/metrics.go (1)
89-104:⚠️ Potential issuePotential concurrency issue with slice operations.
The
MeasureSincemethod appends to slices (QueryDurationsandWriteDurations) without synchronization. This could lead to data races if called from multiple goroutines.Consider protecting the slice operations with a mutex:
+type StructMetrics struct { + *TreeMetrics + *DbMetrics + mu sync.Mutex +} func (s *StructMetrics) MeasureSince(start time.Time, keys ...string) { + s.mu.Lock() + defer s.mu.Unlock() dur := time.Since(start) if len(keys) != 2 { return } k := keys[1] switch k { case "db_get": s.QueryDurations = append(s.QueryDurations, dur) s.QueryTime += dur s.QueryCount++ case "db_write": s.WriteDurations = append(s.WriteDurations, dur) s.WriteTime += dur } }
🧹 Nitpick comments (7)
v2/sqlite_batch.go (1)
227-230: Improve error handling in saveLeaves method.The method now correctly returns the leaf count instead of 0 when the index creation fails. However, consider adding error wrapping to provide more context about where the error occurred.
- return b.leafCount, err + return b.leafCount, fmt.Errorf("failed to create leaf index: %w", err)v2/sqlite_writer.go (1)
467-471: Consider addressing the TODO comment.There's an open TODO comment about unifying the delete approach between tree and leaf operations. This could be an opportunity for optimization.
Would you like me to analyze both approaches and propose a unified solution that optimizes the delete operations?
v2/cmd/bench/bench.go (4)
63-67: Make tree options configurable via flags.The tree options are currently hardcoded. Consider making these configurable via command-line flags for better flexibility.
+ cmd.Flags().IntVar(&checkpointInterval, "checkpoint-interval", 80, "checkpoint interval") + cmd.Flags().BoolVar(&stateStorage, "state-storage", true, "enable state storage") + cmd.Flags().IntVar(&heightFilter, "height-filter", 1, "height filter") + cmd.Flags().IntVar(&evictionDepth, "eviction-depth", 22, "eviction depth")
96-99: Remove commented out code.The commented out code should be removed as it adds noise to the codebase. If these values are important, consider making them configurable via flags.
48-103: Refactor long RunE function for better maintainability.The RunE function is handling multiple responsibilities. Consider breaking it down into smaller, focused functions:
- setupCPUProfiling
- createMultiTree
- setupBenchmarkOptions
🧰 Tools
🪛 golangci-lint (1.62.2)
62-62: undefined: iavl
(typecheck)
73-73: undefined: iavl
(typecheck)
76-76: undefined: iavl
(typecheck)
81-81: undefined: iavl
(typecheck)
147-148: Document empty method implementations.The empty implementations of
IncrCounterandMeasureSinceshould be documented to explain why they are not implemented.+// IncrCounter is not implemented as it's not needed for the current metrics collection func (p *prometheusMetricsProxy) IncrCounter(_ float32, _ ...string) { } +// MeasureSince is not implemented as it's not needed for the current metrics collection func (p *prometheusMetricsProxy) MeasureSince(_ time.Time, _ ...string) {}Also applies to: 160-160
v2/multitree.go (1)
313-457: Consider adding progress tracking and graceful shutdown.The
TestBuildmethod performs long-running operations but lacks:
- Progress tracking for partial completions
- Context for cancellation
- Graceful shutdown mechanism
Consider refactoring to add these features:
-func (mt *MultiTree) TestBuild(opts *testutil.TreeBuildOptions) (int64, error) { +func (mt *MultiTree) TestBuild(ctx context.Context, opts *testutil.TreeBuildOptions) (int64, error) { var ( version int64 err error cnt = int64(1) ) + // Track progress + progress := &atomic.Int64{} + defer func() { + mt.logger.Info("Build progress", "completed", progress.Load()) + }() for ; itr.Valid(); err = itr.Next() { + select { + case <-ctx.Done(): + return cnt, ctx.Err() + default: + } if err != nil { return cnt, err } // ... rest of the code ... + progress.Add(1) } return cnt, nil }
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (6)
v2/cmd/bench/bench.go(1 hunks)v2/metrics/metrics.go(4 hunks)v2/migrate/go.mod(2 hunks)v2/multitree.go(7 hunks)v2/sqlite_batch.go(2 hunks)v2/sqlite_writer.go(3 hunks)
✅ Files skipped from review due to trivial changes (1)
- v2/migrate/go.mod
🧰 Additional context used
🪛 golangci-lint (1.62.2)
v2/cmd/bench/bench.go
62-62: undefined: iavl
(typecheck)
73-73: undefined: iavl
(typecheck)
76-76: undefined: iavl
(typecheck)
81-81: undefined: iavl
(typecheck)
⏰ Context from checks skipped due to timeout of 90000ms (3)
- GitHub Check: Benchmarks
- GitHub Check: Analyze (go)
- GitHub Check: Test
🔇 Additional comments (8)
v2/sqlite_batch.go (1)
13-17: LGTM! Good addition of metrics field.The addition of the metrics field to the sqliteBatch struct is well-placed and follows the pattern of other fields. This enables proper metrics collection for batch operations.
v2/sqlite_writer.go (2)
44-58: LGTM! Improved nil safety in logger initialization.The changes add proper nil checking before assigning the logger, which prevents potential nil pointer dereferences. This is a good defensive programming practice.
443-461: LGTM! Enhanced metrics collection.The changes improve metrics collection by:
- Using deferred measurement for overall DB write time
- Adding separate counters for leaf and branch writes
- Using consistent metric namespacing
v2/cmd/bench/bench.go (3)
111-116: Replace panic with proper error handling in flag validation.Using panic for flag validation is not a good practice. Since this is happening during command initialization, return an error instead.
137-143: Handle HTTP server errors more gracefully.The current implementation panics on HTTP server errors, which is not ideal for a long-running service.
150-158: Make SetGauge more robust.The current implementation assumes the keys slice has at least 2 elements and doesn't validate the key value.
v2/multitree.go (2)
34-37: LGTM! Good defensive programming.The initialization of
MetricsProxywithNilMetricswhen it's nil is a good practice to avoid nil pointer dereferences.
123-138:❌ Incorrect review comment
Consider adding error handling for pool initialization.
The
newTreemethod creates a new node pool but doesn't handle potential initialization errors.Let's verify if
NewNodePoolcan return an error:
🏁 Script executed:
#!/bin/bash # Description: Check if NewNodePool has error handling ast-grep --pattern 'func NewNodePool() (*NodePool, error)'Length of output: 60
Node pool initialization error handling is not needed
After verifying, it appears that the
NewNodePoolfunction does not return an error (its signature is likelyfunc NewNodePool() *NodePool), so there's no possibility of an error that would need handling in thenewTreemethod. Please disregard the suggestion to add error handling for pool initialization.Likely an incorrect or invalid review comment.
| func (s *StructMetrics) Add(os *StructMetrics) { | ||
| s.WriteDurations = append(s.WriteDurations, os.WriteDurations...) | ||
| s.WriteTime += os.WriteTime | ||
| s.WriteLeaves += os.WriteLeaves | ||
| s.WriteBranch += os.WriteBranch | ||
|
|
||
| s.QueryDurations = append(s.QueryDurations, os.QueryDurations...) | ||
| s.QueryTime += os.QueryTime | ||
| s.QueryCount += os.QueryCount | ||
| s.QueryLeafMiss += os.QueryLeafMiss | ||
| s.QueryLeafCount += os.QueryLeafCount | ||
| s.QueryBranchCount += os.QueryBranchCount | ||
| } |
There was a problem hiding this comment.
Add synchronization to prevent data races.
The Add method performs concurrent slice operations and counter updates without synchronization.
Apply mutex protection to prevent data races:
func (s *StructMetrics) Add(os *StructMetrics) {
+ s.mu.Lock()
+ defer s.mu.Unlock()
+ os.mu.Lock()
+ defer os.mu.Unlock()
s.WriteDurations = append(s.WriteDurations, os.WriteDurations...)
s.WriteTime += os.WriteTime
s.WriteLeaves += os.WriteLeaves
s.WriteBranch += os.WriteBranch
s.QueryDurations = append(s.QueryDurations, os.QueryDurations...)
s.QueryTime += os.QueryTime
s.QueryCount += os.QueryCount
s.QueryLeafMiss += os.QueryLeafMiss
s.QueryLeafCount += os.QueryLeafCount
s.QueryBranchCount += os.QueryBranchCount
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (s *StructMetrics) Add(os *StructMetrics) { | |
| s.WriteDurations = append(s.WriteDurations, os.WriteDurations...) | |
| s.WriteTime += os.WriteTime | |
| s.WriteLeaves += os.WriteLeaves | |
| s.WriteBranch += os.WriteBranch | |
| s.QueryDurations = append(s.QueryDurations, os.QueryDurations...) | |
| s.QueryTime += os.QueryTime | |
| s.QueryCount += os.QueryCount | |
| s.QueryLeafMiss += os.QueryLeafMiss | |
| s.QueryLeafCount += os.QueryLeafCount | |
| s.QueryBranchCount += os.QueryBranchCount | |
| } | |
| func (s *StructMetrics) Add(os *StructMetrics) { | |
| s.mu.Lock() | |
| defer s.mu.Unlock() | |
| os.mu.Lock() | |
| defer os.mu.Unlock() | |
| s.WriteDurations = append(s.WriteDurations, os.WriteDurations...) | |
| s.WriteTime += os.WriteTime | |
| s.WriteLeaves += os.WriteLeaves | |
| s.WriteBranch += os.WriteBranch | |
| s.QueryDurations = append(s.QueryDurations, os.QueryDurations...) | |
| s.QueryTime += os.QueryTime | |
| s.QueryCount += os.QueryCount | |
| s.QueryLeafMiss += os.QueryLeafMiss | |
| s.QueryLeafCount += os.QueryLeafCount | |
| s.QueryBranchCount += os.QueryBranchCount | |
| } |
Part 1 of #1043
Summary by CodeRabbit
New Features
Bug Fixes
Refactor
Chores