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Intermittent test failure: completer blocked on send #601

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bgentry opened this issue Sep 18, 2024 · 0 comments
Open

Intermittent test failure: completer blocked on send #601

bgentry opened this issue Sep 18, 2024 · 0 comments
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bug Something isn't working

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@bgentry
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bgentry commented Sep 18, 2024

I noticed this failure. It

Run go test -p 1 -race ./... -timeout 2m
  go test -p 1 -race ./... -timeout [2](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:2)m
  shell: /usr/bin/bash -e {0}
  env:
    ADMIN_DATABASE_URL: ***localhost:54[3](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:3)2
    DATABASE_URL: ***127.0.0.1:5[4](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:4)32/river_dev?sslmode=disable
    TEST_DATABASE_URL: ***127.0.0.1:[5](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:5)432/river_test?sslmode=disable
    GOTOOLCHAIN: local
ok  	github.com/riverqueue/river	37.0[6](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:6)0s
ok  	github.com/riverqueue/river/internal/cmd/testdbman	(cached)
ok  	github.com/riverqueue/river/internal/dblist	1.068s
ok  	github.com/riverqueue/river/internal/dbunique	1.184s
panic: test timed out after 2m0s
running tests:
	TestAsyncCompleter/SlowerContinuousCompletion (1m59s)

goroutine 14318 [running]:
testing.(*M).startAlarm.func1()
	/opt/hostedtoolcache/go/1.22.[7](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:7)/x64/src/testing/testing.go:2366 +0x265
created by time.goFunc
	/opt/hostedtoolcache/go/1.22.7/x64/src/time/sleep.go:177 +0x45

goroutine 1 [chan receive, 1 minutes]:
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1650 +0x9b2
testing.tRunner(0xc00017[8](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:8)820, 0xc00003fa40)
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:16[9](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:10)5 +0x25e
testing.runTests(0xc0001281f8, {0x[10](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:11)d9980, 0x9, 0x9}, {0x7f5cfe781a48?, 0xc000114540?, 0x10e1240?})
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:2159 +0x8bf
testing.(*M).Run(0xc00012d040)
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:2027 +0xf18
github.com/riverqueue/river/internal/riverinternaltest.WrapTestMain(0xc00012d040)
	/home/runner/work/river/river/internal/riverinternaltest/riverinternaltest.go:291 +0x136
github.com/riverqueue/river/internal/jobcompleter.TestMain(...)
	/home/runner/work/river/river/internal/jobcompleter/main_test.go:10
main.main()
	_testmain.go:73 +0x2d6

goroutine 14204 [select]:
github.com/jackc/pgx/v5/pgxpool.(*Pool).backgroundHealthCheck(0xc000000b40)
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:4[11](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:12) +0x1d3
github.com/jackc/pgx/v5/pgxpool.NewWithConfig.func3()
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:275 +0x68
created by github.com/jackc/pgx/v5/pgxpool.NewWithConfig in goroutine 70
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:273 +0xa65

goroutine 551 [chan send, 1 minutes]:
github.com/riverqueue/river/internal/jobcompleter.(*AsyncCompleter).JobSetStateIfRunning.func1()
	/home/runner/work/river/river/internal/jobcompleter/job_completer.go:172 +0x26e
golang.org/x/sync/errgroup.(*Group).Go.func1()
	/home/runner/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:78 +0x92
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 363
	/home/runner/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:75 +0x[12](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:13)5

goroutine 34 [chan receive, 1 minutes]:
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1650 +0x9b2
testing.tRunner(0xc000196000, 0xc84ab8)
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1695 +0x25e
created by testing.(*T).Run in goroutine 1
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1742 +0x826

goroutine 362 [semacquire, 1 minutes]:
sync.runtime_Semacquire(0xc000112f90?)
	/opt/hostedtoolcache/go/1.22.7/x64/src/runtime/sema.go:62 +0x25
sync.(*WaitGroup).Wait(0xc000112f88)
	/opt/hostedtoolcache/go/1.22.7/x64/src/sync/waitgroup.go:116 +0xa5
golang.org/x/sync/errgroup.(*Group).Wait(0xc000112f80)
	/home/runner/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:56 +0x38
github.com/riverqueue/river/internal/jobcompleter.(*AsyncCompleter).Start.func1()
	/home/runner/work/river/river/internal/jobcompleter/job_completer.go:200 +0x16a
created by github.com/riverqueue/river/internal/jobcompleter.(*AsyncCompleter).Start in goroutine 33
	/home/runner/work/river/river/internal/jobcompleter/job_completer.go:193 +0x1c5

goroutine 33 [chan receive, 1 minutes]:
github.com/riverqueue/river/rivershared/startstop.(*BaseStartStop).Stop(0xc0001b04b0)
	/home/runner/work/river/river/rivershared/startstop/start_stop.go:165 +0x3a
testing.(*common).Cleanup.func1()
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1175 +0x17a
testing.(*common).runCleanup(0xc000179860, 0x0)
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:[13](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:14)53 +0x262
testing.tRunner.func2()
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1683 +0x51
testing.tRunner(0xc000179860, 0xc000123c80)
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1695 +0x25e
created by testing.(*T).Run in goroutine 34
	/opt/hostedtoolcache/go/1.22.7/x64/src/testing/testing.go:1742 +0x826

goroutine 380 [select]:
github.com/jackc/pgx/v5/pgxpool.(*Pool).backgroundHealthCheck(0xc000000180)
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:411 +0x1d3
github.com/jackc/pgx/v5/pgxpool.NewWithConfig.func3()
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:275 +0x68
created by github.com/jackc/pgx/v5/pgxpool.NewWithConfig in goroutine 6
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:273 +0xa65

goroutine 10797 [select]:
github.com/jackc/pgx/v5/pgxpool.(*Pool).backgroundHealthCheck(0xc000000a80)
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:411 +0x1d3
github.com/jackc/pgx/v5/pgxpool.NewWithConfig.func3()
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:275 +0x68
created by github.com/jackc/pgx/v5/pgxpool.NewWithConfig in goroutine 31
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:273 +0xa65

goroutine 9247 [select]:
github.com/jackc/pgx/v5/pgxpool.(*Pool).backgroundHealthCheck(0xc0000009c0)
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:411 +0x1d3
github.com/jackc/pgx/v5/pgxpool.NewWithConfig.func3()
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:275 +0x68
created by github.com/jackc/pgx/v5/pgxpool.NewWithConfig in goroutine 69
	/home/runner/go/pkg/mod/github.com/jackc/pgx/[email protected]/pgxpool/pool.go:273 +0xa65
FAIL	github.com/riverqueue/river/internal/jobcompleter	120.026s
?   	github.com/riverqueue/river/internal/jobstats	[no test files]
ok  	github.com/riverqueue/river/internal/leadership	1.386s
ok  	github.com/riverqueue/river/internal/maintenance	4.811s
ok  	github.com/riverqueue/river/internal/notifier	1.736s
ok  	github.com/riverqueue/river/internal/notifylimiter	1.210s
?   	github.com/riverqueue/river/internal/rivercommon	[no test files]
ok  	github.com/riverqueue/river/internal/riverinternaltest	1.069s
?   	github.com/riverqueue/river/internal/riverinternaltest/riverdrivertest	[no test files]
ok  	github.com/riverqueue/river/internal/riverinternaltest/sharedtx	1.087s
ok  	github.com/riverqueue/river/internal/testdb	(cached)
ok  	github.com/riverqueue/river/internal/util/chanutil	1.261s
ok  	github.com/riverqueue/river/internal/util/dbutil	1.1[14](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:15)s
ok  	github.com/riverqueue/river/internal/util/hashutil	(cached)
?   	github.com/riverqueue/river/internal/workunit	[no test files]
ok  	github.com/riverqueue/river/rivermigrate	2.660s
ok  	github.com/riverqueue/river/rivertest	1.3[20](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:21)s
FAIL)

In particular, this bit jumped out:

goroutine 551 [chan send, 1 minutes]:
github.com/riverqueue/river/internal/jobcompleter.(*AsyncCompleter).JobSetStateIfRunning.func1()
	/home/runner/work/river/river/internal/jobcompleter/job_completer.go:172 +0x26e
golang.org/x/sync/errgroup.(*Group).Go.func1()
	/home/runner/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:78 +0x92
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 363
	/home/runner/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:75 +0x[12](https://github.com/riverqueue/river/actions/runs/10930264275/job/30342796640#step:7:13)5

That line indicates an issue with shutdown ordering, because a completed job is trying to send notice to a subscription channel nobody is listening to, which blocks the shutdown.
@bgentry bgentry added the bug Something isn't working label Sep 18, 2024
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