Statistics
https://play.clickhouse.com/play?user=play#c2VsZWN0IAp0b1N0YXJ0T2ZIb3VyKGNoZWNrX3N0YXJ0X3RpbWUpIGFzIGQsCmNvdW50KCksICBncm91cFVuaXFBcnJheShwdWxsX3JlcXVlc3RfbnVtYmVyKSwgIGFueShyZXBvcnRfdXJsKQpmcm9tIGNoZWNrcyB3aGVyZSAnMjAyMi0wNi0wMScgPD0gY2hlY2tfc3RhcnRfdGltZSBhbmQgdGVzdF9uYW1lIGxpa2UgJyUwMjQ5MV9wYXJ0X2xvZ19oYXNfdGFibGVfdXVpZCUnIGFuZCB0ZXN0X3N0YXR1cyBpbiAoJ0ZBSUwnLCAnRkxBS1knKSBncm91cCBieSBkIG9yZGVyIGJ5IGQgZGVzYw==

Some times there are not output from requests.
{
    return getMaxPartsCountAndSizeForPartitionWithState(DataPartState::Active);
}
size_t MergeTreeData::getMaxInactivePartsCountForPartition() const
{
    return getMaxPartsCountAndSizeForPartitionWithState(DataPartState::Outdated).first;
}
std::optional<Int64> MergeTreeData::getMinPartDataVersion() const
{
    auto lock = lockParts();
    std::optional<Int64> result;
    for (const auto & part : getDataPartsStateRange(DataPartState::Active))
    {
        if (!result || *result > part->info.getDataVersion())
            result = part->info.getDataVersion();
    }
    return result;
}
void MergeTreeData::delayInsertOrThrowIfNeeded(Poco::Event * until, ContextPtr query_context) const