3 Commits (e91b4d0cf628545383e2858b3be65ea90682f2ce)

Author	SHA1	Message	Date
omegaga	7323e4c8ab	Fix clang on macOS ... Summary: Fix problem when casting `size_t` to `uint64_t`. Avoid usage of `size_t` when possible. Test Plan: Pass related test on Travis CI. Reviewers: sdong Reviewed By: sdong Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D61443	8 years ago
omegaga	2306167d30	Fix clang build failure and refactor unit test ... Summary: <endian.h> is not platform independent. Switch to our own endianness transformation function instead. Test Plan: Pass Travis CI. Refactor tests to make sure endianness transformation runs properly. Reviewers: IslamAbdelRahman, sdong Reviewed By: sdong Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D61389	8 years ago
omegaga	d51dc96a79	Experiments on column-aware encodings ... Summary: Experiments on column-aware encodings. Supported features: 1) extract data blocks from SST file and encode with specified encodings; 2) Decode encoded data back into row format; 3) Directly extract data blocks and write in row format (without prefix encoding); 4) Get column distribution statistics for column format; 5) Dump data blocks separated by columns in human-readable format. There is still on-going work on this diff. More refactoring is necessary. Test Plan: Wrote tests in `column_aware_encoding_test.cc`. More tests should be added. Reviewers: sdong Reviewed By: sdong Subscribers: arahut, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D60027	8 years ago