Support Adding Parquet Files to an Existing Table

[jacksonrnewhouse]

Arroyo is a Rust-based stream processing engine that performs reliable computation on data across many supported sources and writes to a similar number of sinks. It has support for writing vanilla parquet to S3, as well as a Delta Lake integration. We'd like to also be able to write to Iceberg tables. Because of the consistency mechanisms of Arroyo, writes will be done separately from adding the files to the table, so we only need something like an "insert_table()" method on an existing table. It'd also be helpful to have some sort of "create table if not exist", but if that's more work we can tell users they have to make the table themselves.

[Xuanwo]

Thank you for bringing this to our attention. This feature is indeed included in our process of writing data into Iceberg. We simply need to make the API accessible.

[liurenjie1024]

Hi, @jacksonrnewhouse What's mention are two feature:

1. Create table.
2. Append files.

These two features are transaction apis. 1 is relative easy to finish, while 2 is a little complicated. For 2, do you need to insert also deletes, or just append data?

[jacksonrnewhouse]

Just appending data would be sufficient.