Added three callback functions for compression: get max size,
compression, and decompression. Users can define their callback
functions connecting to compression libraries they want to use.
Support selective compression: users can choose which record to
compress and which not to.
Added three callback functions for compression: get max size, compression, and decompression. Users can define their callback functions connecting to compression libraries they want to use.
Support selective compression: users can choose which record to compress and which not to.