StarRocks, a Linux Foundation project, is a next-generation sub-second MPP OLAP database for full analytics scenarios, including multi-dimensional analytics, real-time analytics, and ad-hoc queries. StarRocks received InfoWorld’s 2023 BOSSIE Award for best open source software.

StarRocks

Is it possible to define multiple key-value pairs within the "labels.location" property?
I'm referring to the following documentation page which only illustrates a single key-value pair rack:rack1
<https://docs.starrocks.io/docs/administration/management/resource_management/be_label/>

It would be useful, if it was possible to define multiple kv pairs such as:

```SET ("labels.location" = "rack:rack1; tier:hot");```
And then be able to constrain a table's data to a particular tier.
Can this be done?
Thanks!

to answer my own question:

I looked at the source code and specifying multiple key-value pairs is not yet implemented on the BE node side.
So one would have to encode all kv pairs into a single value.
However, on the table side, only up to 10 labels are supported and asterisk pattern are only defined as the entire value part.
This means that using labels not only for placement control but also to handle tiering is risky for larger clusters in which the table labels could exceed the maximum number of entries.

In StarRocks 4.x, it seems that one could use warehouse labels for the tiering? Constraining a table to a warehouse?