```
$ ~/arc/build/clickhouse/programs/clickhouse client
ClickHouse client version 21.2.1.1-arcadia.
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 21.2.1 revision 54447.

max42-dev.sas.yp-c.yandex.net :) create table t(a Tuple(UInt8, UInt8)) engine = Log()

CREATE TABLE t
(
    `a` Tuple(UInt8, UInt8)
)
ENGINE = Log

Query id: b49dbb5d-d2a9-4c99-b90e-00c60edf2103

Ok.

0 rows in set. Elapsed: 0.005 sec. 

max42-dev.sas.yp-c.yandex.net :) insert into t values ((NULL, 42))

INSERT INTO t VALUES

Query id: 318d6f3e-f3bc-467c-85ff-62da908230dd

Logical error: 'Unexpected literal type inside Array: Nothing. It's a bug'.
Aborted (core dumped)
```

This is CH similar to one from Arcadia r7788360 (~fresh master version from GH).

(you don't have to strictly follow this form)

{
    if (!state)
        throw Exception("Got empty state for DataTypeTuple.", ErrorCodes::LOGICAL_ERROR);
    auto * tuple_state = typeid_cast<SerializeBinaryBulkStateTuple *>(state.get());
    if (!tuple_state)
    {
        auto & state_ref = *state;
        throw Exception("Invalid SerializeBinaryBulkState for DataTypeTuple. Expected: "
                        + demangle(typeid(SerializeBinaryBulkStateTuple).name()) + ", got "
                        + demangle(typeid(state_ref).name()), ErrorCodes::LOGICAL_ERROR);
    }
    return tuple_state;
}
static DeserializeBinaryBulkStateTuple * checkAndGetTupleDeserializeState(IDataType::DeserializeBinaryBulkStatePtr & state)