Details
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Bug
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Resolution: Fixed
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Major
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7.1.4, 7.1.0, 7.1.1, 7.1.2, 7.2.0, 7.1.3, 7.2.1
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Untriaged
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0
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Unknown
Description
| Issue | Resolution |
| StatsMgr stopping could hang due to watching for notifications resulting in stranded go-routines. | Go-routines are now stopped correctly. |
I’m able to reproduce it by adding a forced sleep:
case oneRequestor := <-stats_mgr.latestNotificationReqCh:
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// Because the channel can length can vary, just do a green clone to be safe
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notificationForRequestor := notification.Clone(1).(service_def.SourceNotification)
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stats_mgr.logger.Infof("NEIL DEBUG sleeping 30 seconds\n")
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time.Sleep(30 * time.Second)
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oneRequestor.sendBack <- notificationForRequestor
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And during this 30 seconds once the message shows up, manually pause the pipeline. Then, I see the same stack traces of which I was suspicious:
1 @ 0x10003b7f6 0x10004c9af 0x10004c986 0x10006ae67 0x10008c7cb 0x100644e45 0x10069542e 0x10006f7e1
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# 0x10006ae66 sync.runtime_Semacquire+0x26 /Users/neil.huang/.cbdepscache/exploded/x86_64/go-1.20/go/src/runtime/sema.go:62
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# 0x10008c7ca sync.(*WaitGroup).Wait+0x4a /Users/neil.huang/.cbdepscache/exploded/x86_64/go-1.20/go/src/sync/waitgroup.go:116
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# 0x100644e44 github.com/couchbase/goxdcr/pipeline_svc.(*StatisticsManager).Stop+0xc4 /Users/neil.huang/source/couchbase/goproj/src/github.com/couchbase/goxdcr/pipeline_svc/statistics_manager.go:985
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# 0x10069542d github.com/couchbase/goxdcr/pipeline_ctx.(*PipelineRuntimeCtx).stopService+0xed /Users/neil.huang/source/couchbase/goproj/src/github.com/couchbase/goxdcr/pipeline_ctx/pipeline_runtimeCtx.go:201
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1 @ 0x10003b7f6 0x10004c9af 0x10004c986 0x10006ae67 0x10008c7cb 0x100694c4f 0x1003eba82 0x10006f7e1
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# 0x10006ae66 sync.runtime_Semacquire+0x26 /Users/neil.huang/.cbdepscache/exploded/x86_64/go-1.20/go/src/runtime/sema.go:62
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# 0x10008c7ca sync.(*WaitGroup).Wait+0x4a /Users/neil.huang/.cbdepscache/exploded/x86_64/go-1.20/go/src/sync/waitgroup.go:116
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# 0x100694c4e github.com/couchbase/goxdcr/pipeline_ctx.(*PipelineRuntimeCtx).Stop.func2+0x38e /Users/neil.huang/source/couchbase/goproj/src/github.com/couchbase/goxdcr/pipeline_ctx/pipeline_runtimeCtx.go:170
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# 0x1003eba81 github.com/couchbase/goxdcr/base.ExecWithTimeout.func1+0x21 /Users/neil.huang/source/couchbase/goproj/src/github.com/couchbase/goxdcr/base/simple_utils.go:48
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1 @ 0x10003b7f6 0x100006a2e 0x1000065dd 0x100646165 0x10006f7e1
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# 0x100646164 github.com/couchbase/goxdcr/pipeline_svc.(*StatisticsManager).watchNotificationCh+0x224 /Users/neil.huang/source/couchbase/goproj/src/github.com/couchbase/goxdcr/pipeline_svc/statistics_manager.go:1131
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Attachments
Issue Links
- is a backport of
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- Closed
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