guilload edited a comment on issue #170: Add support for Iceberg MR / InputFormat and OutputFormat APIs URL: https://github.com/apache/incubator-iceberg/issues/170#issuecomment-519342060 Ok, thanks for the pointers. That's helpful. I'll start with `HiveCatalogs` and we can revisit later. One last question regarding generic container. Let's assume a user wants to user a custom container: `FooRecord`. For each file format, the user will have to provide a "value reader function", for instance a `Schema -> OrcValueReader<FooRecord>` function and a `MessageType -> ParquetValueReader<FooRecord>` function. What the interface for providing those custom value reader functions should look like? `parquet-mr` relies on the `ReadSupport` interface to solve a similar problem and ships with a default `GroupReadSupport ` implementation. Here's my WIP branch: https://github.com/guilload/incubator-iceberg/pull/1
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