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tarantool / vshard

The new generation of sharding based on virtual buckets
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flaky test: storage-luatest/storage_2_test.lua #375

Closed Serpentian closed 1 year ago

Serpentian commented 1 year ago

The test fails sometimes with the following output:

Test-run output ```sh [001] storage-luatest/storage_2_test.lua [001] wait vclock: --- {0: 2, 1: 79} [001] ... [001] to --- {1: 80} [001] ... [001] [001] wait vclock: --- {0: 14, 1: 109, 2: 1} [001] ... [001] to --- {1: 110, 2: 1} [001] ... [001] [001] wait vclock: --- {0: 12, 1: 106} [001] ... [001] to --- {1: 107} [001] ... [001] [001] TAP version 13 [001] 1..14 [001] # Started on Mon Oct 10 15:05:25 2022 [001] # Starting group: storage. [001] ok 1 storage..test_bucket_space_trigger_sent [001] ok 2 storage..test_bucket_space_trigger_garbage [001] ok 3 storage..test_bucket_space_trigger_active [001] ok 4 storage..test_bucket_space_trigger_pinned [001] ok 5 storage..test_bucket_space_triggers_receiving [001] ok 6 storage..test_storage_callro_refro_loss [001] ok 7 storage..test_storage_callro_refrw_loss [001] # Starting group: storage.memtx_use_mvcc_engine:true [001] ok 8 storage.memtx_use_mvcc_engine:true.test_bucket_space_trigger_sent [001] ok 9 storage.memtx_use_mvcc_engine:true.test_bucket_space_trigger_garbage [001] ok 10 storage.memtx_use_mvcc_engine:true.test_bucket_space_trigger_active [001] ok 11 storage.memtx_use_mvcc_engine:true.test_bucket_space_trigger_pinned [001] ok 12 storage.memtx_use_mvcc_engine:true.test_bucket_space_triggers_receiving [001] ok 13 storage.memtx_use_mvcc_engine:true.test_storage_callro_refro_loss [001] not ok 14 storage.memtx_use_mvcc_engine:true.test_storage_callro_refrw_loss [001] # ...ming/Work/vshard/test/storage-luatest/storage_2_test.lua:86: expected: nil, actual: cdata: 0x41fa7940 [001] # stack traceback: [001] # ...ming/Work/vshard/test/storage-luatest/storage_2_test.lua:343: in function 'test_storage_callro_refrw_loss' [001] # ...ming/Work/vshard/test/storage-luatest/storage_2_test.lua:368: in function 'storage.memtx_use_mvcc_engine:true.test_storage_callro_refrw_loss' [001] # ... [001] # [C]: in function 'xpcall' [001] # Ran 14 tests in 2.839 seconds, 13 successes, 1 fail [001] [001] not ok 14 storage.memtx_use_mvcc_engine:true.test_storage_callro_refrw_loss # [001] Rejected result file: var/rejects/storage-luatest/storage_2.reject [001] [ fail ] [Main process] Got failed test; gently terminate all workers... [001] Worker "001_storage-luatest" got failed test; stopping the server... ```
Serpentian commented 1 year ago

Moreover, it hangs sometimes. It's probably related to vclock synchronization between replicas