**Describe the issue**

Improve feedback when trying to replace a partition with a different index

**Which ClickHouse server version to use**

21.9.5


**How to reproduce**

```
DROP DATABASE IF EXISTS test;

CREATE DATABASE test;

CREATE TABLE test.A (id UInt32, company UInt32, total UInt64) ENGINE=SummingMergeTree() PARTITION BY company PRIMARY KEY (id) ORDER BY (id, company);

INSERT INTO test.A SELECT number%10 as id, number%2 as company, count() as total FROM numbers(100) GROUP BY id,company;

CREATE TABLE test.B (id UInt32, company UInt32, total UInt64) ENGINE=SummingMergeTree() PARTITION BY company ORDER BY (id, company);

ALTER TABLE test.B REPLACE PARTITION '0' FROM test.A;

```

**Error message and/or stacktrace**

```
Received exception from server (version 21.9.5):
Code: 33. DB::Exception: Received from localhost:9000. DB::Exception: Cannot read all data. Bytes read: 0. Bytes expected: 4.. (CANNOT_READ_ALL_DATA)
(query: ALTER TABLE test.B REPLACE PARTITION '0' FROM test.A;)
````

**Expected behavior**

```
Code: 33. DB::Exception: Received from localhost:9000. DB::Exception: Cannot replace partition different index (CANNOT_REPLACE_PARTITION)
(query: ALTER TABLE test.B REPLACE PARTITION '0' FROM test.A;)
```

{
            pool.scheduleOrThrowOnError([&, thread]
            {
                while (true)
                {
                    std::pair<String, DiskPtr> thread_part;
                    {
                        const std::lock_guard lock{part_select_mutex};
                        if (remaining_thread_parts.empty())
                            return;
                        
                        auto thread_idx = thread;
                        if (threads_parts[thread].empty())
                        {
                            
                            std::uniform_int_distribution<size_t> distribution(0, remaining_thread_parts.size() - 1);
                            auto it = remaining_thread_parts.begin();
                            std::advance(it, distribution(thread_local_rng));
                            thread_idx = *it;
                        }
                        auto & thread_parts = threads_parts[thread_idx];
                        thread_part = thread_parts.back();
                        thread_parts.pop_back();
                        if (thread_parts.empty())
                            remaining_thread_parts.erase(thread_idx);
                    }
                    load_part(thread_part.first, thread_part.second);
                }
            });
        }