[GitHub] [incubator-iceberg] linxingyuan1102 commented on issue #459: Consider replacing TableOperations parameter in TableMetadataParser::read

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linxingyuan1102 commented on issue #459: Consider replacing TableOperations parameter in TableMetadataParser::read
URL: https://github.com/apache/incubator-iceberg/issues/459#issuecomment-529578442
 
 
   > I like the idea but I am curious how we plan to replace `ops$current` and other calls.
   
   @aokolnychyi Thanks for the comment. As per my inspection, `ops$current` is called when `Snapshot::addedFiles`/`Snapshot::deletedFiles` is called. Essentially, it is used to get a `specLookup` function, which is essentially a mapping from spec ID to partition spec. I think it should be okay to store such a mapping in `BaseSnapshot`, i.e., to replace the `TableOperations` field with `Map<Integer, PartitionSpec>` and `FileIO`. Also, from my understanding, it's more intuitive to not let a certain `TableMetadata`'s behavior depend on the table's (future) state (`ops$current`). What do you think?

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