Atomic operation when writing to Icebergtables via flink

[adityakumarsinha]

Query engine

Flink

Question

I have a requirement to write to multiple Iceberg tables based on single source event. I like to know whether multiple iceberg sinks / commiter can write both the table atomically within one checkpoint.

[pvary]

There are currently no multitable commits available in Iceberg.

Flink will make sure that the data is written exactly once into the tables, but there is no consistency guarantees between the 2 tables

[adityakumarsinha]

In Iceberg transactions it is mentioned that Nessie supports multi-table transactions. How that works?

[pvary]

Does this help: https://iceberg.apache.org/docs/1.7.0/nessie/#loosely-coupled-transactions?