Azat Khuzhin e379b80d45 MADV_DONTNEED check in runtime for qemu (via patching jemalloc) ... qemu does not support MADV_DONTNEED, and by not support it simply ignore it (i.e. return 0 -- no error). This issue has been "fixed" in #15590, however it just terminates the process, and completely breaks clickhouse under qemu (see also #15174). But there is no need in such strong protection, we can stop using madvise in jemalloc if MADV_DONTNEED does not work properly. And this is what #18169 was tried to do (by override madvise), however this will break sanitizers, at least TSAN and UBSAN. The problem there is that sanitizers initialization code uses madvise (and there is no way to turn this off with TSAN_OPTIONS) and overwritten madvise function will have sanitizers traits (__tsan_func_entry), while TSAN is not ready for this, and eventually it SIGSEGV. Interesting thing is that in the recent clang-12, madvise was replaced with direct syscall [1]. [1]: 9f8c4039f2 But it is better to make clickhouse compatible with clang < 12 too, so instead of override madvise completely, the runtime check was moved into the jemalloc code [2]. [2]: https://github.com/ClickHouse-Extras/jemalloc/pull/1		2020-12-19 15:34:12 +03:00
..
0_stateless	MADV_DONTNEED check in runtime for qemu (via patching jemalloc)	2020-12-19 15:34:12 +03:00
1_stateful	Enable Pytest framework for stateless tests (#17902)	2020-12-18 16:26:11 +03:00
bugs	move test to bugs	2020-11-24 15:22:13 +03:00
__init__.py
.gitignore
conftest.py
query_test.py	Update query_test.py	2020-12-18 19:01:04 +03:00
server.py	ANTLR4 Grammar for ClickHouse and new parser (#11298)	2020-12-04 05:15:44 +03:00
shell_config.sh	Preparation	2020-12-19 00:54:24 +03:00
skip_list.json