Hi all, I have a use case where I want to stream into BigQuery, using a tablespec but with CreateDisposition.CREATE_NEVER.I want to partition/shard my data by date, and use BigQuery's date partitioning feature within a single table (rather than creating a new BigQuery table for every day). In this case writes would be made to a partition in a single table, e.g. `my-project:dataset.my_table$20170407`, and in my tablespec I would just be choosing the partition decorator using the window.
Unfortunately this doesn't seem possible with BigQueryIO at the moment, because it requires me to use CreateDisposition.CREATE_IF_NEEDED. I can't use CreateDisposition.CREATE_IF_NEEDED because it requires me to provide a table schema and my BigQuery schema isn't available at compile time. Is there any good reason why CREATE_NEVER is not allowed when using a tablespec? Thanks, Josh
