mirrors/seaweedfs
1
0
Fork 0
mirror of https://github.com/seaweedfs/seaweedfs.git synced 2026-08-21 14:46:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

atomic currentStartOffset

Browse Source
This commit is contained in:
chrislu
2025-10-14 00:54:15 -07:00
parent e2c6f47cf6
commit 92a7e42368
1 changed files with 8 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
weed/mq/kafka/integration/broker_client_subscribe.go
+8 -2
View File
@@ -298,13 +298,19 @@ func (bc *BrokerClient) ReadRecordsFromOffset(ctx context.Context, session *Brok
//
// The session will naturally advance as records are consumed, so we should NOT
// recreate it just because requestedOffset != session.StartOffset
// CRITICAL: Re-check the offset under session lock to prevent race conditions
// Another thread might be reading from this session right now and advancing the offset
session.mu.Lock()
currentStartOffset := session.StartOffset
session.mu.Unlock()
if requestedOffset < session.StartOffset {
if requestedOffset < currentStartOffset {
// Need to seek backward - close old session and create a fresh subscriber
// Restarting an existing stream doesn't work reliably because the broker may still
// have old data buffered in the stream pipeline
glog.V(0).Infof("[FETCH] Seeking backward: requested=%d < session=%d, creating fresh subscriber",
requestedOffset, session.StartOffset)
requestedOffset, currentStartOffset)
// Extract session details before unlocking
topic := session.Topic