Yanqin Jin de7f423a82 Add SST ingestion to ldb (#4205)
Summary:
We add two subcommands `write_extern_sst` and `ingest_extern_sst` to ldb. This PR avoids changing existing code because we hope to cherry-pick to earlier releases to support compatibility check for external SST file ingestion.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4205

Differential Revision: D9112711

Pulled By: riversand963

fbshipit-source-id: 7cae88380d4de86da8440230e87eca66755648e4
2018-08-09 14:29:11 -07:00
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2018-08-09 14:29:11 -07:00