**How to reproduce**
Clickhouse server 20.13.1.5273
```
CREATE TABLE default.test
(
`key` UInt32,
`ts` DateTime CODEC(DoubleDelta, LZ4),
`db_time` DateTime DEFAULT now() COMMENT 'spout-ignore' CODEC(DoubleDelta, LZ4)
)
ENGINE = MergeTree
PARTITION BY toStartOfTenMinutes(db_time)
ORDER BY (key, ts)
TTL db_time + toIntervalHour(3)
SETTINGS index_granularity = 8192, merge_with_ttl_timeout = 3600, min_rows_for_compact_part = 1000000, min_bytes_for_compact_part = 200000000, in_memory_parts_enable_wal = 0;


INSERT INTO test(key, ts) SELECT number % 1000, now() + intDiv(number,1000) FROM numbers(500);

SELECT * FROM test;
500 rows in set. Elapsed: 0.003 sec.

DETACH TABLE test;

ATTACH TABLE test;

SELECT * FROM test;

0 rows in set. Elapsed: 0.002 sec.
```

**Expected behavior**
Clickhouse would flush parts on disk.
size_t num_parts,
        std::queue<std::vector<std::pair<String, DiskPtr>>> & parts_queue,
        bool skip_sanity_checks,
        const MergeTreeSettingsPtr & settings);
    void loadDataPartsFromWAL(
        DataPartsVector & broken_parts_to_detach,
        DataPartsVector & duplicate_parts_to_remove,
        MutableDataPartsVector & parts_from_wal,
        DataPartsLock & part_lock);
};
struct CurrentlySubmergingEmergingTagger
{
    MergeTreeData & storage;
    String emerging_part_name;
    MergeTreeData::DataPartsVector submerging_parts;
    Poco::Logger * log;
    CurrentlySubmergingEmergingTagger(
        MergeTreeData & storage_, const String & name_, MergeTreeData::DataPartsVector && parts_, Poco::Logger * log_)
        : storage(storage_), emerging_part_name(name_), submerging_parts(std::move(parts_)), log(log_)
    {
    }
    ~CurrentlySubmergingEmergingTagger();
};
[[ maybe_unused ]] static bool needSyncPart(size_t input_rows, size_t input_bytes, const MergeTreeSettings & settings)
{
    return ((settings.min_rows_to_fsync_after_merge && input_rows >= settings.min_rows_to_fsync_after_merge)
        || (settings.min_compressed_bytes_to_fsync_after_merge && input_bytes >= settings.min_compressed_bytes_to_fsync_after_merge));
}
}