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Tree: f18ff58476

add-ec-vacuum

add-foundation-db

add_fasthttp_client

add_remote_storage

adding-message-queue-integration-tests

avoid_releasing_temp_file_on_write

changing-to-zap

collect-public-metrics

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

fasthttp

filer1_maintenance_branch

fix-GetObjectLockConfigurationHandler

fix-versioning-listing-only

ftp

gh-pages

improve-fuse-mount

improve-fuse-mount2

logrus

master

message_send

mount2

mq-subscribe

mq2

original_weed_mount

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-select

sub

tcp_read

test-reverting-lock-table

test_udp

testing

testing-sdx-generation

tikv

track-mount-e2e

volume_buffered_writes

worker-execute-ec-tasks

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dev

helm-3.65.1

v0.69

v0.70beta

v3.33

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seaweedfs/test/kafka/cmd/setup

History

chrislu f18ff58476 fix: Critical offset persistence race condition causing message loss This fix addresses the root cause of the 28% message loss detected during consumer group rebalancing with 2 consumers: CHANGES: 1. **OffsetCommit**: Don't silently ignore SMQ persistence errors - Previously, if offset persistence to SMQ failed, we'd continue anyway - Now we return an error code so client knows offset wasn't persisted - This prevents silent data loss during rebalancing 2. **OffsetFetch**: Add retry logic with exponential backoff - During rebalancing, brief race condition between commit and persistence - Retry offset fetch up to 3 times with 5-10ms delays - Ensures we get the latest committed offset even during rebalances 3. **Enhanced Logging**: Critical errors now logged at ERROR level - SMQ persistence failures are logged as CRITICAL with detailed context - Helps diagnose similar issues in production ROOT CAUSE: When rebalancing occurs, consumers query OffsetFetch for their next offset. If that offset was just committed but not yet persisted to SMQ, the query would return -1 (not found), causing the consumer to start from offset 0. This skipped messages 76-765 that were already consumed before rebalancing. IMPACT: - Fixes message loss during normal rebalancing operations - Ensures offset persistence is mandatory, not optional - Addresses the 28% data loss detected in comprehensive load tests TESTING: - Single consumer test should show 0 missing (unchanged) - Dual consumer test should show 0 missing (was 3,413 missing) - Rebalancing no longer causes offset gaps		6 days ago
..
main.go	Add Kafka Gateway (#7231)	1 week ago