[GitHub] [iceberg] spancer commented on issue #2208: IcebergTableSink to write data into multiple iceberg tables

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spancer commented on issue #2208:
URL: https://github.com/apache/iceberg/issues/2208#issuecomment-908899467


   > Currently, Flink Iceberg sink can only write to one table with exactly-once semantic.
   > 
   > If the table partition doesn't fit your requirements, maybe you can use filter or side output to split the stream into multiple sub streams. then attach a separate Iceberg sink to each sub DataStream. This probably won't work if the number of tables/datasets is really high (like hundreds). In that case, maybe split the uber stream before the Iceberg ingestion jobs.
   
   Hi steven, 
     Using a side-output stream and attach a separate sink to each sub-stream can't solve the problem gracefully. This requires a fixed count of sub-streams, or we have to bind each sub-stream to a pre-defined name, otherwise, we can't use them in the follow-up sink. Because we have to make sure the job graph is pre-defined. I think using two jobs might achieve this.


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