**Problem:** 
Some AD users can't log in, they get the error:
`Authentification failed: password is incorrect or there is no user with such name`

Clickhouse version 22.3.2.1

**There is an error in Clickhouse logs:**
`<Error> Access(user directories): from: 10.11.12.13, user: AD_USERNAME: Authentification failed: Code: 532. DB::Exception: Size limit exceeded. (LDAP_ERROR)`

This error occurs for AD users who have many groups in the **memberOf** LDAP container.

**I checked the number of groups for 4 accounts:**

AD_USERNAME_1 - 107 groups - ERROR Authentification failed
AD_USERNAME_2 - 120 groups - ERROR Authentification failed
AD_USERNAME_3 - 54   groups - OK
AD_USERNAME_4 - 38   groups - OK

**I checked the search groups through the Ldapsearch program:**

Ldapsearch gave all 107 groups for the account without errors:
`ldapsearch -H "ldaps://hostname:636" -D 'CN=AD_USERNAME_1,OU=Users,DC=company,DC=corp.DC=net' -b 'DC=company,DC=corp.DC=net' '(&(objectClass=group)(member=CN=AD_USERNAME_1,OU=Groups,DC=company,DC=corp.DC=net))'`

**Probable cause of the error:** 
Clickhouse receives a list of groups which mapping from AD and cannot process a large string/array.
LDAPClient(LDAPClient &&) = delete;
    LDAPClient & operator= (const LDAPClient &) = delete;
    LDAPClient & operator= (LDAPClient &&) = delete;
protected:
    MAYBE_NORETURN void diag(int rc, String text = "");
    MAYBE_NORETURN bool openConnection();
    void closeConnection() noexcept;
    SearchResults search(const SearchParams & search_params);
    const Params params;
#if USE_LDAP
    LDAP * handle = nullptr;
#endif
    String final_user_name;
    String final_bind_dn;
    String final_user_dn;
};
class LDAPSimpleAuthClient
    : private LDAPClient
{
public:
    using LDAPClient::LDAPClient;
    bool authenticate(const RoleSearchParamsList * role_search_params, SearchResultsList * role_search_results);
};
}
#undef MAYBE_NORETURN