Igor Nikonov

Stress test failure is known issue #39857, see https://s3.amazonaws.com/clickhouse-test-reports/38719/fdd699e8a377c25bf8ff9e1d2c14f760cc79a4ee/stress_test__undefined_/fatal_messages.txt

> > "global" is a good name. "stream", I am afraid, will lead to confusion between DataStream and streams on pipeline level. imo "port" is ok. and "stream" also ok...

> @devcrafter this better? Yes, thanks, it looks much better when decoupled

> I'm not sure if it will be useful, but let me share the link to Nikolay's [work](https://github.com/ClickHouse/ClickHouse/compare/read-in-order-from-query-plan) I see. I wasn't aware of it. More generic way would be...

Stress test(msan) failure - known issue #41548 00993_system_parts_race_condition_drop_zookeeper failure is known issue in [CI DB](https://play.clickhouse.com/play?user=play&url=https%3A%2F%2Fplay.clickhouse.com%2F#U0VMRUNUICogRlJPTSBjaGVja3MgV0hFUkUgdGVzdF9zdGF0dXMgPSAnRkFJTCcgQU5EIHRlc3RfbmFtZSA9ICcwMDk5M19zeXN0ZW1fcGFydHNfcmFjZV9jb25kaXRpb25fZHJvcF96b29rZWVwZXInCk9SREVSIEJZIGNoZWNrX3N0YXJ0X3RpbWUgREVTQwo=)

Is it known? [AST fuzzer (ubsan) — ../src/Analyzer/Passes/SumIfToCountIfPass.cpp:106:97](https://s3.amazonaws.com/clickhouse-test-reports/43827/dae51c7a00298e56bdf138a6f254ee01a7436e8f/fuzzer_astfuzzerubsan//report.html)

https://s3.amazonaws.com/clickhouse-test-reports/57467/434c2113d207b4507cac7f7cac88dbf553cc3474/fuzzer_astfuzzermsan/report.html ``` 2023.12.04 15:11:49.999517 [ 1182 ] {49219680-1cd9-43de-af98-fc8eeceeaa2a} : Logical error: 'RangeReader read 10000 rows, but 16384 expected.'. 2023.12.04 15:11:50.000383 [ 1255 ] {} BaseDaemon: ########## Short fault info ############...

Should be fixed by https://github.com/ClickHouse/ClickHouse/pull/60158 Related debug traces - https://pastila.nl/?00467c0a/825cd9632fa6c4770c275908bf7438bb#NMeL6Ajvet66LJGd3/1ddw==

AST Fuzzer [error report](https://s3.amazonaws.com/clickhouse-test-reports/60077/b6277d5e87367c2eda974ca09f1c174563ab80d6/ast_fuzzer__asan_.html) should be fixed by https://github.com/ClickHouse/ClickHouse/pull/60227

There are MergeTree settings which control usage of `fsync()`. Please check `min_rows_to_fsync_after_merge` and/or `min_compressed_bytes_to_fsync_after_merge`. The relevant code is [here](https://github.com/ClickHouse/ClickHouse/blob/23b7102a39fc2c162deef140b3b89bdbe8a85eb7/src/Storages/MergeTree/MergeTreeData.h#L1623-L1624)