Revert "quick fix for broken resolution of apt.llvm.org on Yandex infra"

Remove setting same timeouts in secure socket

DOCSUP-6212: Document the log_comment setting

Maybe fix false MSan report in GRPC

Remove outdated suppressions, part 2

[ClickHouse][Copier] Improve copier work

less flaky functional tests

MaterializeMySQL: add skipping index for _version column

More coarse test for DateLUT

Relax covering part check on mutation

Remove useless code

Merge branch 'gyuton-DOCSUP-6212-document-the-log_comment_setting' of https://github.com/gyuton/ClickHouse into gyuton-DOCSUP-6212-document-the-log_comment_setting

Merge branch 'master' of https://github.com/ClickHouse/ClickHouse into gyuton-DOCSUP-6212-document-the-log_comment_setting

Rename NuKeeper and TestKeeper to Keeper in all places

DOCSUP-5932: Update the description of the position function normal

fix constant condition conflict with column name and add stateless test

This commit fixes doc description of window for ClickHouse aggregate
function windowFunnel.
Previously, window was described as time interval between adjacent
conditions, but actually it is the time interval between first condition
and last condition.
Now, we change the description to reflect the fact.

Fix MSan report in `quantileDeterministic`

Replicated fetches timeouts