Implement ORC deletes for v2 spec

[pvary]

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()

[dongjoon-hyun]

Thank you, @pvary, @kbendick, @aokolnychyi . For this issue, is there something we need to change in Apache ORC?

[pvary]

First stab at the implementation of the ORC delete writers: #2935

[aokolnychyi]

@dongjoon-hyun, I think we should have everything we need so far. Thanks for checking!

[pvary]

Part of #3164 is to implement delete writers there

[openinx]

Thanks @pvary for this issue and PR ! Adding ORC delete writers is the essential thing we need to do, the current v2 write path and unit tests are commented 'TODO : add ORC delete writers' everywhere. I'm afraid there will be too many TODO we have to fix as the v2 feature iterate. Now is the right time to fix those holes ! Let we take a look at the PR #2935 today.

[openinx]

Closed via #3250. Now we've successfully addressed the ORC delete writers issues that troubles us a lot before. Thanks @pvary for the great work !