**Use case**

Currently, `system.replicas` table has `total_replicas` and `active_replicas` columns which are useful to check/alert when some replicas are down. One problem, these columns are numbers. They tell when there is a problem, but you need to further check ZooKeeper or query all the nodes to detect what exact replicas (hosts) are down/inactive/have problems.

**Describe the solution you'd like**

Add a replicas column maybe as a map which would contain the replica name, and it's status. Or, add 2 array columns with `replica_names` and `active_replica_names`

**Alternative**

Something along the line

```sql
select path, value from system.zookeeper where path IN (
    select concat(path, '/', name) from system.zookeeper where path in (select concat(zookeeper_path, '/replicas') from system.replicas)
)
and name = 'is_active'
```
DB::IMergeTreeDataPart::TTLInfos move_ttl_infos;
    NamesAndTypesList columns = metadata_snapshot->getColumns().getAllPhysical().filter(block.getNames());
    ReservationPtr reservation = reserveSpacePreferringTTLRules(metadata_snapshot, 0, move_ttl_infos, time(nullptr), 0, true);
    VolumePtr volume = getStoragePolicy()->getVolume(0);
    IMergeTreeDataPart::MinMaxIndex minmax_idx;
    minmax_idx.update(block, getMinMaxColumnsNames(metadata_snapshot->getPartitionKey()));
    auto new_data_part = createPart(
        lost_part_name,
        choosePartType(0, block.rows()),
        new_part_info,
        createVolumeFromReservation(reservation, volume),
        TMP_PREFIX + lost_part_name);
    if (settings->assign_part_uuids)
        new_data_part->uuid = UUIDHelpers::generateV4();
    new_data_part->setColumns(columns);
    new_data_part->rows_count = block.rows();
    {
        auto lock = lockParts();
        auto parts_in_partition = getDataPartsPartitionRange(new_part_info.partition_id);
        if (parts_in_partition.empty())
        {
            LOG_WARNING(log, "Empty part {} is not created instead of lost part because there are no parts in partition {} (it's empty), resolve this manually using DROP PARTITION.", lost_part_name, new_part_info.partition_id);
            return false;
        }
        new_data_part->partition = (*parts_in_partition.begin())->partition;
    }
    new_data_part->minmax_idx = std::move(minmax_idx);
    new_data_part->is_temp = true;
    SyncGuardPtr sync_guard;
    if (new_data_part->isStoredOnDisk())