Hello Is there any config in pinot that can be used to allow

__

in table name. Right now it is not allowed to save

__

in table name? What was the motivation for not allowing

__

Preconditions.checkArgument(!tableName.contains(TABLE_NAME_FORBIDDEN_SUBSTRING),
        "'tableName' cannot contain double underscore ('__')");

The motivation I can think of is, Double underscore is a reserved character sequence in realtime tables for segment names.

thanks @Neha Pawar, please help me understand if table name has

__

, how it is impacting the segment names for table. thanks

I don't recall, maybe @Jackie or @Rong R ?

Neha is correct. We don't allow __ in table name because it is reserved as the real-time segment delimiter. Having double underscore in table name will break the real-time segment name