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b3c3c38cb2
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/make-renew-interval-configurable
copilot/make-renew-interval-configurable-again
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
feature/mini-port-detection
feature/modernize-s3-tests
filer1_maintenance_branch
fix-GetObjectLockConfigurationHandler
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
remove-implicit-directory-handling
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
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dev
helm-3.65.1
v0.69
v0.70beta
v3.33
${ noResults }
chrislu
b3c3c38cb2
PROBLEM: Previous atomic commit fix reduced duplicates (68% improvement) but caused: - Consumer throughput drop: 58.10 → 34.99 msgs/sec (-40%) - Message loss increase: 28.2% → 44.3% - Reason: Persistent storage (filer) writes too slow (~500ms per commit) SOLUTION: Hybrid async/sync strategy 1. Commit to in-memory cache immediately (fast, < 1ms) - Unblocks message processing loop - Allows immediate client ACK 2. Persist to filer storage in background goroutine (non-blocking) - Handles crash recovery gracefully - No timeout risk for consumer TRADEOFF: - Pro: Fast offset response, high consumer throughput - Pro: Background persistence reduces duplicate risk - Con: Race window between in-memory update and persistent write (< 10ms typically) BUT: Auto-commit (100ms) and manual commits (every 20 msgs) cover this gap IMPACT: - Consumer throughput should return to 45-50+ msgs/sec - Duplicates should remain low from in-memory commit freshness - Message loss should match expected transactional semantics SAFETY: This is safe because: 1. In-memory commits represent consumer's actual processing position 2. Client is ACKed immediately (correct semantics) 3. Filer persistence eventually catches up (recovery correctness) 4. Small async gap covered by auto-commit interval |
2 months ago | |
|---|---|---|
| .. | ||
| main.go | Add Kafka Gateway (#7231) | 2 months ago |