fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

Andrew Kryczka 1ba2b8a568 Add sample_for_compression results to table properties (#8139 An error occurred ) ... Summary: Added `TableProperties::{fast,slow}_compression_estimated_data_size`. These properties are present in block-based tables when `ColumnFamilyOptions::sample_for_compression > 0` and the necessary compression library is supported when the file is generated. They contain estimates of what `TableProperties::data_size` would be if the "fast"/"slow" compression library had been used instead. One limitation is we do not record exactly which "fast" (ZSTD or Zlib) or "slow" (LZ4 or Snappy) compression library produced the result. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8139 Test Plan: - new unit test - ran `db_bench` with `sample_for_compression=1`; verified the `data_size` property matches the `{slow,fast}_compression_estimated_data_size` when the same compression type is used for the output file compression and the sampled compression Reviewed By: riversand963 Differential Revision: D27454338 Pulled By: ajkr fbshipit-source-id: 9529293de93ddac7f03b2e149d746e9f634abac4		4 years ago
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main/java/org/rocksdb	Add sample_for_compression results to table properties (#8139 An error occurred )	4 years ago
test/java/org/rocksdb	Add sample_for_compression results to table properties (#8139 An error occurred )	4 years ago