The only columns that show what they are supposed to are `database`, `table`, `name` and `disk`.
The other columns borrow values from a neighbour.
```
┌─table────────┬─partition_id─┬─name────────────────────────────────┬─disk────┬─reason─┬─min_block_number─┬─max_block_number─┬───level─┐
│ actions_log  │ ignored      │ ignored_202107_714380_714380_0      │ default │        │           202107 │           714380 │  714380 │
│ actions_log  │ ignored      │ ignored_202107_713838_713838_0      │ default │        │           202107 │           713838 │  713838 │
│ actions_log  │ ignored      │ ignored_202107_713875_713875_0      │ default │        │           202107 │           713875 │  713875 │
│ actions_log  │ ignored      │ ignored_202107_725839_725839_0      │ default │        │           202107 │           725839 │  725839 │
│ actions_log  │ ignored      │ ignored_202107_713927_713927_0      │ default │        │           202107 │           713927 │  713927 │
│ actions_log  │ ignored      │ ignored_202107_714009_714009_0      │ default │        │           202107 │           714009 │  714009 │
```
loaded_columns.writeText(*buf);
        }
        volume->getDisk()->moveFile(path + ".tmp", path);
    }
    else
    {
        loaded_columns.readText(*volume->getDisk()->readFile(path));
    }
    setColumns(loaded_columns);
}
bool IMergeTreeDataPart::shallParticipateInMerges(const StoragePolicyPtr & storage_policy) const
{
    
    
    
    auto volume_ptr = storage_policy->getVolume(storage_policy->getVolumeIndexByDisk(volume->getDisk()));
    return !volume_ptr->areMergesAvoided();
}
UInt64 IMergeTreeDataPart::calculateTotalSizeOnDisk(const DiskPtr & disk_, const String & from)
{
    if (disk_->isFile(from))
        return disk_->getFileSize(from);
    std::vector<std::string> files;
    disk_->listFiles(from, files);
    UInt64 res = 0;
    for (const auto & file : files)
        res += calculateTotalSizeOnDisk(disk_, fs::path(from) / file);
    return res;
}
void IMergeTreeDataPart::renameTo(const String & new_relative_path, bool remove_new_dir_if_exists) const