Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/11408#issuecomment-191480329
Let me list up possible codec optionsn for each data source.
For JSON, CSV and TEXT data sources,
`none` - no compression
`bzip2`
`snappy`
`gzip`
`deflate` - this is zlib
For Parquet,
`none`/`uncompressed` - 'uncompressed' was possible to set to Spark
configuration option.
`gzip`
`lzo`
`snappy`
`deflate`
For ORC,
`none` - no compression
`zlib`
`snappy`
`lzo`
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