jemalloc relies on working MADV_DONTNEED (that fact that after
madvise(MADV_DONTNEED) returns success, after subsequent access to those
pages they will be zeroed).
However qemu does not support this, yet [1], and you can get very tricky
assert if you will run clickhouse-server under qemu:

    <jemalloc>: ../contrib/jemalloc/src/extent.c:1195: Failed assertion: "p[i] == 0"

  [1]: https://patchwork.kernel.org/patch/10576637/

But after this patch you will get pretty error:

  $ qemu-x86_64-static programs/clickhouse
  MADV_DONTNEED does not zeroed page. jemalloc will be broken

Fix defaults substitution for absent columns which depend on other defaults

Update ActionsVisitor.cpp

Update gRPC to the latest version

Build ClickHouse for release with clang-11

Fix bash in deb packages

Throw an error when a single parameter is passed to ReplicatedMergeTree instead of ignoring it

(cherry picked from commit 8ffa4d395c6c920551f9822c37b3f909cfc32c6e)

This reverts commit 94ab1313.

Add reinterpretAsUUID function

Update SECURITY.md

Check docker scripts with shellcheck

Allow fast test to run locally

Fix using external protobuf library for the build.

ActionsDAG

Refactoring: eliminated a local, throws if it matches the column name as opposed to iterating to the end of the container.