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

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Igor Canadi 9ab5adfc59 New BlockBasedTable version -- better compressed block format ... Summary: This diff adds BlockBasedTable format_version = 2. New format version brings better compressed block format for these compressions: 1) Zlib -- encode decompressed size in compressed block header 2) BZip2 -- encode decompressed size in compressed block header 3) LZ4 and LZ4HC -- instead of doing memcpy of size_t encode size as varint32. memcpy is very bad because the DB is not portable accross big/little endian machines or even platforms where size_t might be 8 or 4 bytes. It does not affect format for snappy. If you write a new database with format_version = 2, it will not be readable by RocksDB versions before 3.10. DB::Open() will return corruption in that case. Test Plan: Added a new test in db_test. I will also run db_bench and verify VSIZE when block_cache == 1GB Reviewers: yhchiang, rven, MarkCallaghan, dhruba, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D31461		10 years ago
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rocksdb	New BlockBasedTable version -- better compressed block format	10 years ago
utilities	Fix iOS compile with -Wshorten-64-to-32	10 years ago