pvary opened a new issue #2914:
URL: https://github.com/apache/iceberg/issues/2914


   Avro and Parquet deletes are under implementation and if I understand 
correctly mostly finished.
   ORC implementation has not been started yet.
   
   Here we should track the status of the ORC implementation and the missing 
pieces. If you know something is missing, please feel free to add it to the 
list.
   
   I have seen these:
   - `Parquet.writeDeletes`, `Avro.writeDeletes()`, but no `ORC.writeDeletes()`
   - `DeleteFilter.openDeletes()`
   - `BaseWriterFactory`
      - newEqualityDeleteWriter()
      - newPositionDeleteWriter()
   - `GenericAppenderFactory`, `FlinkAppenderFactory`, `SparkAppenderFactory`
     - newEqDeleteWriter()
     - newPosDeleteWriter()
   - `TestWriterFactory`
     - testEqualityDeleteWriter()
     - testEqualityDeleteWriterWithMultipleSpecs()
     - testPositionDeleteWriter()
     - testPositionDeleteWriterWithRow()


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