* Userspace page cache
* Maybe it'll build this time, who knows.
* 'auto' went out of fashion, I guess
* Documentation, tsan workaround, metric 'UnreclaimableRss', disable page cache in the test that uses DatabaseOrdinary
* Moved CachedInMemoryReadBufferFromFile to object store level, changed settings, addressed other comments.
* Fix
* Another fix
* Fix restricted seek, fix ppc64le build
* Don't allow page cache with file cache
* Adjust tests a little
* Fix clang-tidy
* Conflicts
* Comments
* Maybe unbroke AsynchronousBoundedReadBuffer
* SettingsChangesHistory.h
* Fix warning in test
* Userspace page cache
* Maybe it'll build this time, who knows.
* 'auto' went out of fashion, I guess
* Documentation, tsan workaround, metric 'UnreclaimableRss', disable page cache in the test that uses DatabaseOrdinary
* Moved CachedInMemoryReadBufferFromFile to object store level, changed settings, addressed other comments.
* Fix
* Another fix
* Fix restricted seek, fix ppc64le build
* Don't allow page cache with file cache
* Adjust tests a little
* Fix clang-tidy
* Conflicts
* Comments
* Maybe unbroke AsynchronousBoundedReadBuffer
* SettingsChangesHistory.h
* Fix warning in test
The problem with --foreground option is that it send the signal only to
the process that had been spawned by timeout(1), while it can create
lots of children, and when you killing parent you are closing pipes and
childrens will get EPIPE, like in [1].
[1]: https://s3.amazonaws.com/clickhouse-test-reports/0/069f8bbb2f48541cc736903e1da5459fa2c27da0/stateless_tests__debug__%5B2_5%5D.html
Another problem is that now child process will finish correctly, which
may also print some errors like QUERY_WAS_CANCELLED (see [2]).
[2]: https://s3.amazonaws.com/clickhouse-test-reports/0/ef66714bf20042ba9cb5d59b7839befe26110b93/stateless_tests__release__analyzer_.html
In general this is not required actually, since all timeout invocations
uses timeout value less then the default test limit (10min). But it may
leave some processes in case of overriding this limit, i.e.
`clickhouse-test --timeout 1`
So to workaround this at least somehow, let's send SIGTERM and only
after some timeout (here I use 0.1), SIGKILL. This will give at least
some ability to terminate all childrens that had been spawned by
timeout(1).
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
