Apache Druid

this is the code that validates datasource names <https://github.com/apache/druid/blob/8296123d895db7d06bc4517db5e767afb7862b83/core/src/main/java/org/apache/druid/common/utils/IdUtils.java#L45-L75>

Thanks <@U0344FW86DD>. This helps. Just to make sure, is it just for datasource names or also for the attribute names used in the data source schema? And are there also constraints on the data/values that get ingested in terms of maximum length permitted, characters allowed etc.?

that code is not used to validate column names or the actual values; they can be more flexible

string columns can contain any valid Unicode data

in terms of length — the absolute hard limit is 2GB per value, but that is definitely outside the expected design envelope and you would likely run into various issues if you had lots of values that long

Apologies for the delay and thanks for clarifying this <@U0344FW86DD>