```
$ ls -lR

.:
total 1645932
-rwxrwxr-x 1 milovidov milovidov 1685419984 июл  4 00:33 clickhouse
drwxrwxr-x 2 milovidov milovidov       4096 июл  4 00:36 lib
drwxrwxr-x 2 milovidov milovidov       4096 июл  4 00:36 lib64

./lib:
total 3536
-rwxr-xr-x 1 milovidov milovidov 2025032 июл  4 00:36 libc.so.6
-rw-r--r-- 1 milovidov milovidov   18816 июл  4 00:36 libdl.so.2
-rw-r--r-- 1 milovidov milovidov 1369352 июл  4 00:36 libm.so.6
-rwxr-xr-x 1 milovidov milovidov  158288 июл  4 00:36 libpthread.so.0
-rw-r--r-- 1 milovidov milovidov   40040 июл  4 00:36 librt.so.1

./lib64:
total 184
-rwxr-xr-x 1 milovidov milovidov 187376 июл  4 00:36 ld-linux-x86-64.so.2


$ sudo chroot . /clickhouse local --query "SELECT 1"
filesystem error: in temp_directory_path: path "/tmp" is not a directory: Not a directory
```
{
    auto lock = getLock();
    if (!shared->schedule_pool)
        shared->schedule_pool.emplace(
            settings.background_schedule_pool_size,
            CurrentMetrics::BackgroundSchedulePoolTask,
            "BgSchPool");
    return *shared->schedule_pool;
}
BackgroundSchedulePool & Context::getDistributedSchedulePool()
{
    auto lock = getLock();
    if (!shared->distributed_schedule_pool)
        shared->distributed_schedule_pool.emplace(
            settings.background_distributed_schedule_pool_size,
            CurrentMetrics::BackgroundDistributedSchedulePoolTask,
            "BgDistSchPool");
    return *shared->distributed_schedule_pool;
}
void Context::setDDLWorker(std::unique_ptr<DDLWorker> ddl_worker)
{
    auto lock = getLock();
    if (shared->ddl_worker)
        throw Exception("DDL background thread has already been initialized.", ErrorCodes::LOGICAL_ERROR);
    shared->ddl_worker = std::move(ddl_worker);
}
DDLWorker & Context::getDDLWorker() const