[DISCUSSION] Should we change default compression codec for Parquet files to snappy?

Now the default value of `hoodie.parquet.compression.codec` (HoodieStorageConfig.PARQUET_COMPRESSION_CODEC_NAME) is `gzip`.
Recently I profiled compaction without configuring any codec and found that method `MessageColumnIORecordConsumer.endMessage()` (which makes compression, `gzip` by default) took **39%** (3,813,420 ms) of the whole time of writing. When run compaction with `snappy` on the same data, the compression took only **3.76%** (242,680 ms) of writing. So, snappy compression is >10 times faster. Why don't we use `snappy` as a default compression codec for parquet files?

If you agree with this proposal, i'm ready to make this change.

Start with HoodieStorageConfig.PARQUET_COMPRESSION_CODEC_NAME and trace where the Parquet compression default is defined and tested. Review the reported MessageColumnIORecordConsumer.endMessage() profiling context and the discussion before deciding whether the default should change; done means a maintainer-approved codec choice with compatibility implications and coverage for the resulting default.

Written by the indexing model from the issue text.