roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [congmgr assertion failed] #53540

cockroach-teamcity · 2020-08-27T08:01:09Z

(roachtest).tpccbench/nodes=9/cpu=4/multi-region failed on provisional_202008261913_v20.2.0-beta.1@eaa939ce6548a54a23970814ff00f30ad87680ac:

The test failed on branch=provisional_202008261913_v20.2.0-beta.1, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/tpccbench/nodes=9/cpu=4/multi-region/run_1
	cluster.go:1628,context.go:135,cluster.go:1617,test_runner.go:823: dead node detection: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod monitor teamcity-2225322-1598474350-85-n12cpu4-geo --oneshot --ignore-empty-nodes: exit status 1 4: skipped
		3: dead
		8: skipped
		1: 8011
		2: 8023
		12: skipped
		5: 6731
		6: 6446
		7: 6254
		10: 6741
		9: 6661
		11: 6377
		Error: UNCLASSIFIED_PROBLEM: 3: dead
		(1) UNCLASSIFIED_PROBLEM
		Wraps: (2) attached stack trace
		  -- stack trace:
		  | main.glob..func14
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:1143
		  | main.wrap.func1
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:267
		  | github.com/spf13/cobra.(*Command).execute
		  | 	/home/agent/work/.go/pkg/mod/github.com/spf13/[email protected]/command.go:830
		  | github.com/spf13/cobra.(*Command).ExecuteC
		  | 	/home/agent/work/.go/pkg/mod/github.com/spf13/[email protected]/command.go:914
		  | github.com/spf13/cobra.(*Command).Execute
		  | 	/home/agent/work/.go/pkg/mod/github.com/spf13/[email protected]/command.go:864
		  | main.main
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:1839
		  | runtime.main
		  | 	/usr/local/go/src/runtime/proc.go:203
		  | runtime.goexit
		  | 	/usr/local/go/src/runtime/asm_amd64.s:1357
		Wraps: (3) 3: dead
		Error types: (1) errors.Unclassified (2) *withstack.withStack (3) *errutil.leafError

More

Artifacts: /tpccbench/nodes=9/cpu=4/multi-region
Related:

roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #53443 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed C-test-failure O-roachtest O-robot branch-provisional_202008241848_v20.1.5 release-blocker
roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #53414 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed C-test-failure O-roachtest O-robot branch-release-19.1 release-blocker
roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #52337 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed C-test-failure O-roachtest O-robot branch-provisional_202008031850_v20.2.0-alpha.3 release-blocker
roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #52206 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed C-test-failure O-roachtest O-robot branch-release-20.1 release-blocker
roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #50698 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed C-test-failure O-roachtest O-robot branch-release-19.2 release-blocker
roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #48255 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed C-test-failure O-roachtest O-robot branch-master release-blocker

See this test on roachdash
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The text was updated successfully, but these errors were encountered:

tbg · 2020-08-27T11:57:17Z

teamcity-2225322-1598474350-85-n12cpu4-geo-0003> I200827 07:35:10.986842 391758 kv/kvserver/replica_command.go:1654 ⋮ [n3,replicate,s3,r4983/1:‹×›] change replicas (add ‹×› remove ‹×›): existing descriptor r4983:‹×› [(n3,s3):1, (n8,s8):4, (n4,s4):3, (n1,s1):5LEARNER, next=6, gen=162, sticky=1598498913.568048083,0]
teamcity-2225322-1598474350-85-n12cpu4-geo-0003> F200827 07:35:11.168393 402450 kv/kvserver/concurrency/concurrency_manager.go:263 ⋮ [n3,s3,r15632/3:‹×›] ‹×›
goroutine 402450 [running]:
github.com/cockroachdb/cockroach/pkg/util/log.getStacks(0x937f001, 0xc0098a3c90, 0x203009, 0x203009)

or, unredacted:

I200827 07:35:10.986842 391758 kv/kvserver/replica_command.go:1654 ⋮ [n3,replicate,s3,r4983/1:‹/Table/58/1/53{1/5/2…-6/9/1…}›] change replicas (add ‹[(n1,s1):5VOTER_INCOMING]› remove ‹[(n4,s4):3VOTER_DEMOTING]›): existing descriptor r4983:‹/Table/58/1/53{1/5/2170-6/9/1846}› [(n3,s3):1, (n8,s8):4, (n4,s4):3, (n1,s1):5LEARNER, next=6, gen=162, sticky=1598498913.568048083,0]
F200827 07:35:11.168393 402450 kv/kvserver/concurrency/concurrency_manager.go:263 ⋮ [n3,s3,r15632/3:‹/Table/61/1/35{87/19…-90/30…}›] ‹discovered lock by different transaction than existing lock›
goroutine 402450 [running]:
github.com/cockroachdb/cockroach/pkg/util/log.getStacks(0x937f001, 0xc0098a3c90, 0x203009, 0x203009)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/get_stacks.go:25 +0xb8
github.com/cockroachdb/cockroach/pkg/util/log.(*loggerT).outputLogEntry(0x937e120, 0x4, 0x162f0fc042c88f34, 0x62412, 0x8607d93, 0x2e, 0x107, 0xc04672fc20, 0x41, 0xc003a572c0, ...)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/clog.go:243 +0x9e5
github.com/cockroachdb/cockroach/pkg/util/log.addStructured(0x60c6440, 0xc023c35830, 0x4, 0x2, 0x502228b, 0x2, 0xc0098a4308, 0x1, 0x1)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/structured.go:52 +0x1ac
github.com/cockroachdb/cockroach/pkg/util/log.logDepth(0x60c6440, 0xc023c35830, 0x1, 0x4, 0x502228b, 0x2, 0xc0098a4308, 0x1, 0x1)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/log.go:44 +0x8c
github.com/cockroachdb/cockroach/pkg/util/log.Fatalf(...)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/log.go:153
github.com/cockroachdb/cockroach/pkg/kv/kvserver/concurrency.(*managerImpl).HandleWriterIntentError(0xc00482e0c0, 0x60c6440, 0xc023c35830, 0xc01148fb90, 0x21, 0xc024185700, 0xc024185700, 0xc024185701)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/concurrency/concurrency_manager.go:263 +0x1cb
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).handleWriteIntentError(0xc004836800, 0x60c6440, 0xc023c35830, 0xc00bbab9e0, 0xc01148fb90, 0x162f0f76805799e9, 0x0, 0x0, 0x300000003, 0x3, ...)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_send.go:455 +0xaa
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).executeBatchWithConcurrencyRetries(0xc004836800, 0x60c6440, 0xc023c35830, 0xc00bbab9e0, 0x56218e8, 0x0, 0xc023d168c0)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_send.go:376 +0x6ec

tbg · 2020-08-28T10:05:50Z

@nvanbenschoten can you take a look at this on Monday? This is blocking 20.2.0-beta.1.

nvanbenschoten · 2020-08-31T19:04:38Z

@knz while here, can we discuss how log redaction should work in this case? We have log.Fatalf(ctx, "%v", errors.AssertionFailedf("...")). Should withAssertionFailure implement the redact.SafeValue interface? Should we be passing it as log.Fatalf(ctx, "%v", redact.Safe(errors.AssertionFailedf("...")))?

knz · 2020-08-31T19:08:44Z

the new error redaction code should have taken care of this already without any changes. I am surprised it didn't.

Or maybe this failure isn't from running off master? if this is a branch forked from before beginning of last week, it's expected the error is marked as redactable. Lastest 20.2 code should not have this problem.

knz · 2020-08-31T19:13:06Z

oh wait I see an oddity specific to log.Fatal. I'm going to file as separate issue for that.

knz · 2020-08-31T19:24:04Z

I've filed #53700 which I believe is restricted to crdb_internal.force_log_fatal().

I manually ran log.Fatalf(ctx, "%v", errors.AssertionFailedf(...)) and I get the expected output (on master).

Are you able to reproduce this error output at will? if so, can you alter the log.Fatal call with a log.Fatalf(ctx, "%+v", errors.Formattable(err)) and see what the object contains in detail?

Should help track down cockroachdb#53540.

nvanbenschoten · 2020-09-04T01:43:04Z

I'm able to hit this pretty easily (though in 4-6 hour) on eaa939c, but haven't been able to hit it yet on 95a13a8. That indicates that the issue was introduced somewhere in the ~200 commits between these two SHAs.

I haven't had much luck digging in with some of the improved logging in #53836 because it takes so long to hit this, so I'm planning on kicking off a long-running git bisect to hopefully narrow the search space down to something a little more manageable.

There were two bumps to Pebble in this period: d15daba and 8b9391d. The first one of these, in particular, is a little scary because it includes these two optimizations to iterator seeking: cockroachdb/pebble@76afcca and cockroachdb/pebble@a24bc6c.

petermattis · 2020-09-04T14:00:06Z

@sumeerbhola can speak to the safety of those Pebble iterator optimizations. I believe he thought they were fairly safe. Usually if we add a bug to iterators the Pebble metamorphic test catches it.

nvanbenschoten · 2020-09-04T14:42:00Z

I was able to hit this on d15daba last night, which, coincidentally, is the commit following 95a13a8. So that might have taken care of the bisect for me. I'm going to spin up another batch of runs on 95a13a8. If they still all come up negative, we have our answer.

petermattis · 2020-09-04T15:33:11Z

Eeek! @nvanbenschoten is this error more likely due to an iterator not returning a key when it should, or returning an old version of a key?

petermattis · 2020-09-04T16:01:41Z

FWIW, I've been stressing the Pebble metamorphic test for 30min now without failure. I'll leave it running as it sounds like this is a very rare problem.

nvanbenschoten · 2020-09-04T16:05:19Z

I think it's more likely due to an iterator returning an old version of a key. For instance, this would be the symptom if an older version of an MVCCMetadata key was revived.

But let's wait to see what this last round of testing shows. I'd like to be very sure about the bisect before pointing the finger in Pebble's direction.

nvanbenschoten · 2020-09-05T02:41:03Z

I'm going to spin up another batch of runs on 95a13a8

@petermattis @sumeerbhola This just finished, again with no instance of this error. So this failure does appear to be a result of that change.

sumeerbhola · 2020-09-08T13:58:29Z

I'm unclear on the commit history based on the output of git log -- I see the pebble bump in 5d1428a preceded by c50ccc9
I don't see 95a13a8 around there.
What am I missing?

Perhaps the cause is actually an earlier commit to pebble_iterator.go 338e623
I am reading https://github.com/cockroachdb/cockroach/blob/master/pkg/storage/engine.go#L163-L171 as saying both upper and lower bound are optional, so there are cases where one may be provided and not the other. Also, the sentence "UpperBound must be provided unless Prefix is true, in which case the end of the prefix will be used as the upper bound." seems incorrect. If there are cases where pebbleIterator.setOptions is called with only one of the bounds, I believe we have a bug -- it should be doing what SetUpperBound is doing in copying the lower bound to the curBuf index.

nvanbenschoten · 2020-09-08T14:10:13Z

I don't see 95a13a8 around there.
What am I missing?

They're back-to-back in https://github.com/cockroachdb/cockroach/commits/d15daba173ac5f7601c70ca6dad57a5a21c2c77b. Am I confusing myself with merge commits? I was comparing d15daba vs. 95a13a8 (its parent).

sumeerbhola · 2020-09-08T15:04:07Z

If there are cases where pebbleIterator.setOptions is called with only one of the bounds, I believe we have a bug -- it should be doing what SetUpperBound is doing in copying the lower bound to the curBuf index.

Misread the code -- there isn't a bug there. Unlike SetUpperBound which inherits the lower-bound, here we overwrite both bounds.

tbg · 2020-09-09T12:48:13Z

@sumeerbhola try running a bunch of them concurrently, see the --count and --parallelism flags. You're looking for failures that have the "dead node detection" line.
The test has a base failure rate of 25% (overheard from Nathan) so running singles won't be too effective.

tbg · 2020-09-09T12:48:53Z

Oh, looks like you got a "dead node" from your description? It should be in the log files, artifacts/..../<n>.logs/cockroach.*

sumeerbhola · 2020-09-09T13:40:35Z

There are logs in both artifacts/..../<n>.logs/ and artifacts/..../<n>.logs/logs/ and I was looking in the former. The latter has the failure. I am trying to find where this value is read from the store but got lost.

F200909 03:00:08.898769 475974 kv/kvserver/replica_write.go:160  [n2,s2,r13754/3:/Table/57/3/{22/6/<clipped by me because of copy-paste failing>
lease applied index bumped while the range was subsumed
goroutine 475974 [running]:
github.com/cockroachdb/cockroach/pkg/util/log.getStacks(0x932e501, 0x86a4a7, 0x0, 0x0)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/get_stacks.go:25 +0xb8
github.com/cockroachdb/cockroach/pkg/util/log.(*loggerT).outputLogEntry(0x932d660, 0x4, 0x1632fe4967e0509a, 0x74346, 0x85b98db, 0x1c, 0xa0, 0xc0050b1880, 0x37, 0xc0063032c0, ...)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/clog.go:243 +0x9e5
github.com/cockroachdb/cockroach/pkg/util/log.addStructured(0x608f980, 0xc004967c00, 0x4, 0x2, 0x50dc28d, 0x37, 0x0, 0x0, 0x0)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/structured.go:52 +0x1ac
github.com/cockroachdb/cockroach/pkg/util/log.logDepth(0x608f980, 0xc004967c00, 0x1, 0xc000000004, 0x50dc28d, 0x37, 0x0, 0x0, 0x0)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/log.go:44 +0x8c
github.com/cockroachdb/cockroach/pkg/util/log.Fatalf(...)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/log/log.go:153
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).executeWriteBatch(0xc001c7f800, 0x608f980, 0xc004967c00, 0xc0086abb90, 0x1632faf30f569bc6, 0x0, 0x0, 0x200000002, 0x3, 0x0, ...)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_write.go:160 +0x1573
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).executeBatchWithConcurrencyRetries(0xc001c7f800, 0x608f980, 0xc004967c00, 0xc0086abb90, 0x55f2bb0, 0x0, 0x0)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_send.go:357 +0x3f5
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).sendWithRangeID(0xc001c7f800, 0x608f980, 0xc004967c00, 0x35ba, 0xc0086abb90, 0x0, 0x0)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_send.go:98 +0x75e
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).Send(0xc001c7f800, 0x608f980, 0xc004967c00, 0x1632fe4967dda72c, 0x0, 0x0, 0x0, 0x0, 0x35ba, 0x0, ...)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_send.go:37 +0x93
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*pendingLeaseRequest).requestLeaseAsync.func2(0x608f980, 0xc004967c00)
	/go/src/github.com/cockroachdb/cockroach/pkg/kv/kvserver/replica_range_lease.go:401 +0x5b7
github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTask.func1(0xc00043e900, 0x608f980, 0xc004967c00, 0xc0050b1640, 0x35, 0x61e1460, 0xc0004c1520, 0xc00527f220)
	/go/src/github.com/cockroachdb/cockroach/pkg/util/stop/stopper.go:347 +0x152
created by github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTask
	/go/src/github.com/cockroachdb/cockroach/pkg/util/stop/stopper.go:342 +0x131

nvanbenschoten · 2020-09-09T14:27:02Z

There were a collection of patches that I needed to run on top of d15daba to avoid other recently fixed failures. It looks like they were 3c09757 and 5430170. 0a9ee34 is probably also a good one to have.

If you're looking to reproduce this, I'd suggest running tpcc/mixed-headroom/n5cpu16 (#53535) instead. That test is faster and more stable.

nvanbenschoten · 2021-02-23T06:48:45Z

@sumeerbhola do you remember what happened here? We tracked this down to d15daba and then what? I'm assuming the issue was resolved, so I'm hoping we can point to the fix and close this issue.

sumeerbhola · 2021-02-23T13:53:23Z

The Pebble optimization bugs were reproduced in Pebble tests, and the fixed optimizations were re-introduced in a series of Pebble PRs cockroachdb/pebble#947 cockroachdb/pebble#949 cockroachdb/pebble#951, and the corresponding Pebble bump in CockroachDB was merged on Oct 23 #55895

nvanbenschoten · 2021-03-04T22:10:38Z

Thanks! So it sounds like we can close this then.

cockroach-teamcity added this to the 20.2 milestone Aug 27, 2020

tbg assigned nvanbenschoten Aug 27, 2020

tbg changed the title ~~roachtest: tpccbench/nodes=9/cpu=4/multi-region failed~~ roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [congmgr assertion failed] Aug 27, 2020

cockroach-teamcity mentioned this issue Aug 30, 2020

roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #48255

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knz removed the release-blocker Indicates a release-blocker. Use with branch-release-2x.x label to denote which branch is blocked. label Aug 31, 2020

nvanbenschoten added a commit to nvanbenschoten/cockroach that referenced this issue Sep 2, 2020

kv: improve HandleWriterIntentError assertion string

66fff25

Should help track down cockroachdb#53540.

nvanbenschoten mentioned this issue Sep 2, 2020

kv: improve HandleWriterIntentError assertion string #53836

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roachtest: tpcc/mixed-headroom/n5cpu16 failed #53535

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thoszhang mentioned this issue Sep 28, 2020

roachtest: schemachange/during/tpcc failed #47614

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dt removed the branch-provisional_202008261913_v20.2.0-beta.1 label Oct 12, 2020

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roachtest: tpccbench/nodes=9/cpu=4/multi-region failed #55939

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roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [nil pointer on failed manual refresh] #60760

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nvanbenschoten mentioned this issue Apr 14, 2021

roachtest: tpccbench/nodes=3/cpu=4 failed [discovered lock by different transaction than existing lock] #63592

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roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [congmgr assertion failed] #53540

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sumeerbhola commented Feb 23, 2021 • edited Loading

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knz commented Aug 31, 2020 •

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nvanbenschoten commented Sep 4, 2020 •

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sumeerbhola commented Feb 23, 2021 •

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