Support maximum compression ratio in setSpeed

[deshanxiao]

Now we only support FAST, DEFAULT and FASTEST. We can support the maximum compression rate like BEST_COMPRESSION.

[dongjoon-hyun]

Could you elaborate more about your idea? @deshanxiao ?

• Do you want to support it only for a specific codec like brotli or for all codec?
• Is there any reference in Parquet?

[deshanxiao]

Could you elaborate more about your idea? @deshanxiao ?

• Do you want to support it only for a specific codec like brotli or for all codec?
• Is there any reference in Parquet?

1. Actually I want to support it for all codec.
2. Yes, Parquet is more flexible and can directly set the value of the compression level. See Parquet CodecFactory

Alternatively, we can consider adding a new method in CompressionOption to directly set the compression level.