Tree:
b0e0c5aaab
add-ec-vacuum
add_fasthttp_client
add_remote_storage
adding-message-queue-integration-tests
adjust-fsck-cutoff-default
also-delete-parent-directory-if-empty
avoid_releasing_temp_file_on_write
changing-to-zap
collect-public-metrics
copilot/fix-helm-chart-installation
copilot/fix-s3-object-tagging-issue
copilot/sub-pr-7677
create-table-snapshot-api-design
data_query_pushdown
dependabot/maven/other/java/client/com.google.protobuf-protobuf-java-3.25.5
dependabot/maven/other/java/examples/org.apache.hadoop-hadoop-common-3.4.0
detect-and-plan-ec-tasks
do-not-retry-if-error-is-NotFound
ec-disk-type-support
enhance-erasure-coding
fasthttp
filer1_maintenance_branch
fix-GetObjectLockConfigurationHandler
fix-ec-rebalance-replica-placement
fix-mount-http-parallelism
fix-mount-read-throughput-7504
fix-s3-object-tagging-issue-7589
fix-versioning-listing-only
ftp
gh-pages
improve-fuse-mount
improve-fuse-mount2
logrus
master
message_send
mount2
mq-subscribe
mq2
nfs-cookie-prefix-list-fixes
optimize-delete-lookups
original_weed_mount
pr-7412
raft-dual-write
random_access_file
refactor-needle-read-operations
refactor-volume-write
remote_overlay
revert-5134-patch-1
revert-5819-patch-1
revert-6434-bugfix-missing-s3-audit
s3-remote-cache-singleflight
s3-select
sub
tcp_read
test-reverting-lock-table
test_udp
testing
testing-sdx-generation
tikv
track-mount-e2e
upgrade-versions-to-4.00
volume_buffered_writes
worker-execute-ec-tasks
0.72
0.72.release
0.73
0.74
0.75
0.76
0.77
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
1.08
1.09
1.10
1.11
1.12
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.30
1.31
1.32
1.33
1.34
1.35
1.36
1.37
1.38
1.40
1.41
1.42
1.43
1.44
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.56
1.57
1.58
1.59
1.60
1.61
1.61RC
1.62
1.63
1.64
1.65
1.66
1.67
1.68
1.69
1.70
1.71
1.72
1.73
1.74
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
1.85
1.86
1.87
1.88
1.90
1.91
1.92
1.93
1.94
1.95
1.96
1.97
1.98
1.99
1;70
2.00
2.01
2.02
2.03
2.04
2.05
2.06
2.07
2.08
2.09
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21
2.22
2.23
2.24
2.25
2.26
2.27
2.28
2.29
2.30
2.31
2.32
2.33
2.34
2.35
2.36
2.37
2.38
2.39
2.40
2.41
2.42
2.43
2.47
2.48
2.49
2.50
2.51
2.52
2.53
2.54
2.55
2.56
2.57
2.58
2.59
2.60
2.61
2.62
2.63
2.64
2.65
2.66
2.67
2.68
2.69
2.70
2.71
2.72
2.73
2.74
2.75
2.76
2.77
2.78
2.79
2.80
2.81
2.82
2.83
2.84
2.85
2.86
2.87
2.88
2.89
2.90
2.91
2.92
2.93
2.94
2.95
2.96
2.97
2.98
2.99
3.00
3.01
3.02
3.03
3.04
3.05
3.06
3.07
3.08
3.09
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.18
3.19
3.20
3.21
3.22
3.23
3.24
3.25
3.26
3.27
3.28
3.29
3.30
3.31
3.32
3.33
3.34
3.35
3.36
3.37
3.38
3.39
3.40
3.41
3.42
3.43
3.44
3.45
3.46
3.47
3.48
3.50
3.51
3.52
3.53
3.54
3.55
3.56
3.57
3.58
3.59
3.60
3.61
3.62
3.63
3.64
3.65
3.66
3.67
3.68
3.69
3.71
3.72
3.73
3.74
3.75
3.76
3.77
3.78
3.79
3.80
3.81
3.82
3.83
3.84
3.85
3.86
3.87
3.88
3.89
3.90
3.91
3.92
3.93
3.94
3.95
3.96
3.97
3.98
3.99
4.00
4.01
4.02
4.03
dev
helm-3.65.1
v0.69
v0.70beta
v3.33
${ noResults }
1 Commits (b0e0c5aaabd393ca633c9c1e5d24d15d47e05bec)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Dmitriy Pavlov
|
9b6b564235
|
Filer: Add retry mechanism for failed file deletions (#7402)
* Filer: Add retry mechanism for failed file deletions Implement a retry queue with exponential backoff for handling transient deletion failures, particularly when volumes are temporarily read-only. Key features: - Automatic retry for retryable errors (read-only volumes, network issues) - Exponential backoff: 5min → 10min → 20min → ... (max 6 hours) - Maximum 10 retry attempts per file before giving up - Separate goroutine processing retry queue every minute - Enhanced logging with retry/permanent error classification This addresses the issue where file deletions fail when volumes are temporarily read-only (tiered volumes, maintenance, etc.) and these deletions were previously lost. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * Update weed/filer/filer_deletion.go Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> * Filer: Add retry mechanism for failed file deletions Implement a retry queue with exponential backoff for handling transient deletion failures, particularly when volumes are temporarily read-only. Key features: - Automatic retry for retryable errors (read-only volumes, network issues) - Exponential backoff: 5min → 10min → 20min → ... (max 6 hours) - Maximum 10 retry attempts per file before giving up - Separate goroutine processing retry queue every minute - Map-based retry queue for O(1) lookups and deletions - Enhanced logging with retry/permanent error classification - Consistent error detail limiting (max 10 total errors logged) - Graceful shutdown support with quit channel for both processors This addresses the issue where file deletions fail when volumes are temporarily read-only (tiered volumes, maintenance, etc.) and these deletions were previously lost. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * Filer: Replace magic numbers with named constants in retry processor Replace hardcoded values with package-level constants for better maintainability: - DeletionRetryPollInterval (1 minute): interval for checking retry queue - DeletionRetryBatchSize (1000): max items to process per iteration This improves code readability and makes configuration changes easier. * Filer: Optimize retry queue with min-heap data structure Replace map-based retry queue with a min-heap for better scalability and deterministic ordering. Performance improvements: - GetReadyItems: O(N) → O(K log N) where K is items retrieved - AddOrUpdate: O(1) → O(log N) (acceptable trade-off) - Early exit when checking ready items (heap top is earliest) - No full iteration over all items while holding lock Benefits: - Deterministic processing order (earliest NextRetryAt first) - Better scalability for large retry queues (thousands of items) - Reduced lock contention duration - Memory efficient (no separate slice reconstruction) Implementation: - Min-heap ordered by NextRetryAt using container/heap - Dual index: heap for ordering + map for O(1) FileId lookups - heap.Fix() used when updating existing items - Comprehensive complexity documentation in comments This addresses the performance bottleneck identified in GetReadyItems where iterating over the entire map with a write lock could block other goroutines in high-failure scenarios. * Filer: Modernize heap interface and improve error handling docs 1. Replace interface{} with any in heap methods - Addresses modern Go style (Go 1.18+) - Improves code readability 2. Enhance isRetryableError documentation - Acknowledge string matching brittleness - Add comprehensive TODO for future improvements: * Use HTTP status codes (503, 429, etc.) * Implement structured error types with errors.Is/As * Extract gRPC status codes * Add error wrapping for better context - Document each error pattern with context - Add defensive check for empty error strings Current implementation remains pragmatic for initial release while documenting a clear path for future robustness improvements. String matching is acceptable for now but should be replaced with structured error checking when refactoring the deletion pipeline. * Filer: Refactor deletion processors for better readability Extract large callback functions into dedicated private methods to improve code organization and maintainability. Changes: 1. Extract processDeletionBatch method - Handles deletion of a batch of file IDs - Classifies errors (success, not found, retryable, permanent) - Manages retry queue additions - Consolidates logging logic 2. Extract processRetryBatch method - Handles retry attempts for previously failed deletions - Processes retry results and updates queue - Symmetric to processDeletionBatch for consistency Benefits: - Main loop functions (loopProcessingDeletion, loopProcessingDeletionRetry) are now concise and focused on orchestration - Business logic is separated into testable methods - Reduced nesting depth improves readability - Easier to understand control flow at a glance - Better separation of concerns The refactored methods follow the single responsibility principle, making the codebase more maintainable and easier to extend. * Update weed/filer/filer_deletion.go Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> * Filer: Fix critical retry count bug and add comprehensive error patterns Critical bug fixes from PR review: 1. Fix RetryCount reset bug (CRITICAL) - Problem: When items are re-queued via AddOrUpdate, RetryCount resets to 1, breaking exponential backoff - Solution: Add RequeueForRetry() method that preserves retry state - Impact: Ensures proper exponential backoff progression 2. Add overflow protection in backoff calculation - Check shift amount > 63 to prevent bit-shift overflow - Additional safety: check if delay <= 0 or > MaxRetryDelay - Protects against arithmetic overflow in extreme cases 3. Expand retryable error patterns - Added: timeout, deadline exceeded, context canceled - Added: lookup error/failed (volume discovery issues) - Added: connection refused, broken pipe (network errors) - Added: too many requests, service unavailable (backpressure) - Added: temporarily unavailable, try again (transient errors) - Added: i/o timeout (network timeouts) Benefits: - Retry mechanism now works correctly across restarts - More robust against edge cases and overflow - Better coverage of transient failure scenarios - Improved resilience in high-failure environments Addresses feedback from CodeRabbit and Gemini Code Assist in PR #7402. * Filer: Add persistence docs and comprehensive unit tests Documentation improvements: 1. Document in-memory queue limitation - Acknowledge that retry queue is volatile (lost on restart) - Document trade-offs and future persistence options - Provide clear path for production hardening - Note eventual consistency through main deletion queue Unit test coverage: 1. TestDeletionRetryQueue_AddAndRetrieve - Basic add/retrieve operations - Verify items not ready before delay elapsed 2. TestDeletionRetryQueue_ExponentialBackoff - Verify exponential backoff progression (5m→10m→20m→40m→80m) - Validate delay calculations with timing tolerance 3. TestDeletionRetryQueue_OverflowProtection - Test high retry counts (60+) that could cause overflow - Verify capping at MaxRetryDelay 4. TestDeletionRetryQueue_MaxAttemptsReached - Verify items discarded after MaxRetryAttempts - Confirm proper queue cleanup 5. TestIsRetryableError - Comprehensive error pattern coverage - Test all retryable error types (timeout, connection, lookup, etc.) - Verify non-retryable errors correctly identified 6. TestDeletionRetryQueue_HeapOrdering - Verify min-heap property maintained - Test items processed in NextRetryAt order - Validate heap.Init() integration All tests passing. Addresses PR feedback on testing requirements. * Filer: Add code quality improvements for deletion retry Address PR feedback with minor optimizations: - Add MaxLoggedErrorDetails constant (replaces magic number 10) - Pre-allocate slices and maps in processRetryBatch for efficiency - Improve log message formatting to use constant These changes improve code maintainability and runtime performance without altering functionality. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * refactoring retrying * use constant * assert * address comment * refactor * address comments * dedup * process retried deletions * address comment * check in-flight items also; dedup code * refactoring * refactoring * simplify * reset heap * more efficient * add DeletionBatchSize as a constant;Permanent > Retryable > Success > Not Found --------- Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> Co-authored-by: chrislu <chris.lu@gmail.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> |
2 months ago |