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Hudi use avro schema for input record, and parquet writes record by using avro schema. But orc cann't support avro natively, need to do some transform work job.

Implementation Steps

• Add storage type option(e.g "hoodie.table.storage.type=ORC") to hoodie.properties.

• Impement a HoodieOrcWriter just like HoodieParquetWriter to write data in ORC.
• Impement a OrcReaderIterator just like ParquetReaderIterator to write data in ORC.
• Change or create new implementation of HoodieInputFormat to support ORC writing (As of now it strictly writes Parquet)
• Rework HoodieBloomIndex to work with ORC.

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