nickva commented on PR #5914:
URL: https://github.com/apache/couchdb/pull/5914#issuecomment-4016919015
Looks great, much faster.
I saw a few retries I gathered all the retries below. In one case it failed
twice in a row so we had 2 retries and 3rd one passed (on noble):
```
2026-03-07T09:58:43.470Z] couch_replicator_scheduler_job_tests:79:
-scheduler_job_main_db_test_/0-fun-0-
(t_replicator_with_checkpoint_and_since_seq)...*failed*
[2026-03-07T09:58:43.470Z] in function
couch_replicator_scheduler_job_tests:scheduler_docs_id/2
(test/eunit/couch_replicator_scheduler_job_tests.erl, line 314)
[2026-03-07T09:58:43.470Z] in call from
couch_replicator_scheduler_job_tests:persistent_replicate/2
(test/eunit/couch_replicator_scheduler_job_tests.erl, line 270)
[2026-03-07T09:58:43.470Z] in call from
couch_replicator_scheduler_job_tests:t_replicator_with_checkpoint_and_since_seq/1
(test/eunit/couch_replicator_scheduler_job_tests.erl, line 205)
[2026-03-07T09:58:43.470Z] in call from eunit_test:run_testfun/1
(eunit_test.erl, line 71)
[2026-03-07T09:58:43.470Z] in call from eunit_proc:run_test/1
(eunit_proc.erl, line 543)
[2026-03-07T09:58:43.470Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 368)
[2026-03-07T09:58:43.470Z] in call from eunit_proc:handle_test/2
(eunit_proc.erl, line 526)
[2026-03-07T09:58:43.470Z] in call from eunit_proc:tests_inorder/3
(eunit_proc.erl, line 468)
[2026-03-07T09:58:43.470Z] **error:{badmatch,[]}
[2026-03-07T09:58:43.470Z] output:<<"">>
```
```
[2026-03-07T09:54:02.738Z] chttpd_db_test:71: -all_test_/0-fun-18-
(t_not_change_db_proper_after_rewriting_shardmap)...*failed*
[2026-03-07T09:54:02.738Z] in function
chttpd_db_test:t_not_change_db_proper_after_rewriting_shardmap/1
(test/eunit/chttpd_db_test.erl, line 227)
[2026-03-07T09:54:02.738Z] in call from eunit_test:run_testfun/1
(eunit_test.erl, line 71)
[2026-03-07T09:54:02.738Z] in call from eunit_proc:run_test/1
(eunit_proc.erl, line 543)
[2026-03-07T09:54:02.738Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 368)
[2026-03-07T09:54:02.738Z] in call from eunit_proc:handle_test/2
(eunit_proc.erl, line 526)
[2026-03-07T09:54:02.738Z] in call from eunit_proc:tests_inorder/3
(eunit_proc.erl, line 468)
[2026-03-07T09:54:02.738Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 358)
[2026-03-07T09:54:02.738Z] in call from eunit_proc:run_group/2
(eunit_proc.erl, line 582)
[2026-03-07T09:54:02.738Z] **error:{badmatch,{412,
[2026-03-07T09:54:02.738Z] #{<<"error">> => <<"file_exists">>,
[2026-03-07T09:54:02.738Z] <<"reason">> =>
[2026-03-07T09:54:02.738Z] <<"The database could not be
created, the file already exis"...>>}}}
[2026-03-07T09:54:02.738Z] output:<<"">>
[2026-03-07T09:54:02.738Z]
[2026-03-07T09:54:02.738Z] undefined
[2026-03-07T09:54:02.738Z] *** context cleanup failed ***
[2026-03-07T09:54:02.738Z] **in function chttpd_db_test:delete_db/1
(test/eunit/chttpd_db_test.erl, line 333)
[2026-03-07T09:54:02.738Z] in call from chttpd_db_test:teardown/1
(test/eunit/chttpd_db_test.erl, line 37)
[2026-03-07T09:54:02.738Z]
**error:{failed_to_delete_test_db,<<"eunit-test-db-96f8f9da86c153bab3340f084b1f4642">>,
[2026-03-07T09:54:02.738Z] {404,
[2026-03-07T09:54:02.738Z] #{<<"error">> =>
<<"not_found">>,
[2026-03-07T09:54:02.738Z] <<"reason">> =>
<<"Database does not exist.">>}}}
```
```
[2026-03-07T10:02:39.711Z] module 'couch_index_crash_tests'
[2026-03-07T10:02:39.711Z] couch_index_crash_tests:
db_event_crash_test...ok
[2026-03-07T10:02:39.711Z] Simulate index crashing
[2026-03-07T10:02:39.711Z] couch_index_crash_tests:72:
-index_crash_test_/0-fun-8- (t_can_open_mock_index)...[0.112 s] ok
[2026-03-07T10:02:39.711Z] couch_index_crash_tests:73:
-index_crash_test_/0-fun-6- (t_index_open_returns_error)...*failed*
[2026-03-07T10:02:39.711Z] in function
couch_index_crash_tests:t_index_open_returns_error/1
(test/eunit/couch_index_crash_tests.erl, line 128)
[2026-03-07T10:02:39.711Z] in call from eunit_test:run_testfun/1
(eunit_test.erl, line 71)
[2026-03-07T10:02:39.711Z] in call from eunit_proc:run_test/1
(eunit_proc.erl, line 543)
[2026-03-07T10:02:39.711Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 368)
[2026-03-07T10:02:39.711Z] in call from eunit_proc:handle_test/2
(eunit_proc.erl, line 526)
[2026-03-07T10:02:39.711Z] in call from eunit_proc:tests_inorder/3
(eunit_proc.erl, line 468)
[2026-03-07T10:02:39.711Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 358)
[2026-03-07T10:02:39.711Z] in call from eunit_proc:run_group/2
(eunit_proc.erl, line 582)
[2026-03-07T10:02:39.711Z] **error:{assert,[{module,couch_index_crash_tests},
[2026-03-07T10:02:39.711Z] {line,128},
[2026-03-07T10:02:39.711Z] {expression,"meck : called (
couch_index_server , handle_call , [ { async_error , '_' , '_' } , '_' , '_' ]
)"},
[2026-03-07T10:02:39.711Z] {expected,true},
[2026-03-07T10:02:39.711Z] {value,false}]}
[2026-03-07T10:02:39.711Z] output:<<"">>
```
```
[2026-03-07T10:00:27.781Z] rexi_tests:35: -rexi_buffer_test_/0-fun-6-
(t_kill)...*failed*
[2026-03-07T10:00:27.781Z] in function rexi_tests:t_kill/1
(test/rexi_tests.erl, line 200)
[2026-03-07T10:00:27.781Z] in call from eunit_test:run_testfun/1
(eunit_test.erl, line 71)
[2026-03-07T10:00:27.781Z] in call from eunit_proc:run_test/1
(eunit_proc.erl, line 543)
[2026-03-07T10:00:27.781Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 368)
[2026-03-07T10:00:27.781Z] in call from eunit_proc:handle_test/2
(eunit_proc.erl, line 526)
[2026-03-07T10:00:27.781Z] in call from eunit_proc:tests_inorder/3
(eunit_proc.erl, line 468)
[2026-03-07T10:00:27.781Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 358)
[2026-03-07T10:00:27.781Z] in call from eunit_proc:run_group/2
(eunit_proc.erl, line 582)
[2026-03-07T10:00:27.781Z] **error:{assertEqual,[{module,rexi_tests},
[2026-03-07T10:00:27.781Z] {line,200},
[2026-03-07T10:00:27.781Z] {expression,"KillReason"},
[2026-03-07T10:00:27.781Z] {expected,killed},
[2026-03-07T10:00:27.781Z] {value,noproc}]}
[2026-03-07T10:00:27.781Z] output:<<"">>
```
```
[2026-03-07T09:56:20.066Z] couch_replicator_scheduler_job_tests:91:
-scheduler_job_prefixed_db_test_/0-fun-0-
(t_replicator_with_checkpoint_and_since_seq)...*failed*
[2026-03-07T09:56:20.066Z] in function
couch_replicator_scheduler_job_tests:t_replicator_with_checkpoint_and_since_seq/1
(test/eunit/couch_replicator_scheduler_job_tests.erl, line 194)
[2026-03-07T09:56:20.066Z] in call from eunit_test:run_testfun/1
(eunit_test.erl, line 71)
[2026-03-07T09:56:20.066Z] in call from eunit_proc:run_test/1
(eunit_proc.erl, line 543)
[2026-03-07T09:56:20.066Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 368)
[2026-03-07T09:56:20.066Z] in call from eunit_proc:handle_test/2
(eunit_proc.erl, line 526)
[2026-03-07T09:56:20.066Z] in call from eunit_proc:tests_inorder/3
(eunit_proc.erl, line 468)
[2026-03-07T09:56:20.066Z] in call from eunit_proc:with_timeout/3
(eunit_proc.erl, line 358)
[2026-03-07T09:56:20.066Z] in call from eunit_proc:run_group/2
(eunit_proc.erl, line 582)
[2026-03-07T09:56:20.066Z]
**error:{assertEqual,[{module,couch_replicator_scheduler_job_tests},
[2026-03-07T09:56:20.066Z] {line,194},
[2026-03-07T09:56:20.066Z] {expression,"RepId2"},
[2026-03-07T09:56:20.066Z]
{expected,<<"bc40164a602ecc5225f7674db55d74fa">>},
[2026-03-07T09:56:20.066Z] {value,null}]}
[2026-03-07T09:56:20.066Z] output:<<"">>
```
They don't seem to have any repeated patterns in them, all different tests.
What I haven't looked at is if these happen about as often in non-parallel
tests. If these are worse with parallel test we could try a -j2 first perhaps
and see if we get fewer of them
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