https://clickhouse-test-reports.s3.yandex.net/15348/34addcf61f653e50e493ff8d94fab015db91fa59/fuzzer/report.html#fail1
extern const Event DictCacheKeysExpired;
    extern const Event DictCacheKeysNotFound;
    extern const Event DictCacheKeysHit;
    extern const Event DictCacheRequestTimeNs;
    extern const Event DictCacheRequests;
    extern const Event DictCacheLockWriteNs;
    extern const Event DictCacheLockReadNs;
    extern const Event FileOpen;
    extern const Event WriteBufferAIOWrite;
    extern const Event WriteBufferAIOWriteBytes;
}
namespace CurrentMetrics
{
    extern const Metric DictCacheRequests;
    extern const Metric Write;
}
namespace DB
{
namespace ErrorCodes
{
    extern const int AIO_READ_ERROR;
    extern const int AIO_WRITE_ERROR;
    extern const int BAD_ARGUMENTS;
    extern const int CACHE_DICTIONARY_UPDATE_FAIL;
    extern const int CANNOT_ALLOCATE_MEMORY;
    extern const int CANNOT_CREATE_DIRECTORY;
    extern const int CANNOT_FSYNC;
    extern const int CANNOT_IO_GETEVENTS;
    extern const int CANNOT_IO_SUBMIT;
    extern const int CANNOT_OPEN_FILE;