Summary:
Fixes #3391.

This change adds a `DeleteRange` method to `SstFileWriter` and adds
support for ingesting SSTs with range deletion tombstones. This is
important for applications that need to atomically ingest SSTs while
clearing out any existing keys in a given key range.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/3778

Differential Revision: D8821836

Pulled By: anand1976

fbshipit-source-id: ca7786c1947ff129afa703dab011d524c7883844

Summary:
Added my project [ProfaneDB](https://profanedb.gitlab.io/) which uses RocksDB as the main storage engine
Closes https://github.com/facebook/rocksdb/pull/3182

Differential Revision: D6370847

Pulled By: ajkr

fbshipit-source-id: ff4bb6bdbc6e42fdb88bd793a84a0e04c129b6ae

Summary: Closes https://github.com/facebook/rocksdb/pull/2927

Differential Revision: D5906613

Pulled By: siying

fbshipit-source-id: 607401e05b27508c816c700864fe81514606e4ef

Summary:
I'd like to propose adding my company as a RocksDB user
Closes https://github.com/facebook/rocksdb/pull/2694

Differential Revision: D5572113

Pulled By: ajkr

fbshipit-source-id: 646143b955e3efddee56691cce912d7badaa6e8b

Summary:
fixed typo
Closes https://github.com/facebook/rocksdb/pull/2430

Differential Revision: D5242471

Pulled By: IslamAbdelRahman

fbshipit-source-id: 832eb3a4c70221444ccd2ae63217823fec56c748

Summary:
add rocksdb users pika
Closes https://github.com/facebook/rocksdb/pull/1805

Differential Revision: D4462809

Pulled By: siying

fbshipit-source-id: 7289886

Summary:
The change is based on https://github.com/facebook/rocksdb/issues/1678
Closes https://github.com/facebook/rocksdb/pull/1699

Differential Revision: D4347657

Pulled By: IslamAbdelRahman

fbshipit-source-id: 72177c2

Summary: Closes https://github.com/facebook/rocksdb/pull/1630

Differential Revision: D4293200

Pulled By: IslamAbdelRahman

fbshipit-source-id: 9c81f85

Summary: Closes https://github.com/facebook/rocksdb/pull/1629

Differential Revision: D4293183

Pulled By: IslamAbdelRahman

fbshipit-source-id: 759ea92

* Adding Dgraph

* open-source

Test Plan: Not needed.

Reviewers: igor, lgalanis, andrewkr

Reviewed By: andrewkr

Subscribers: leveldb, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D60417

VWO, the flagship product of Wingify, uses RocksDB to populate the list of URLs where clients can run A/B test campaigns. It is also used to provide a way for the clients to see if VWO's Smart Code is installed on a specific URL of their account.

Summary: as title

Test Plan: none

Reviewers: sdong, anthony

Reviewed By: anthony

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D52503

Summary: As title

Test Plan: none

Reviewers: yhchiang, rven, anthony, IslamAbdelRahman, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D46053

Summary: As title

Test Plan: ran unit tests

Reviewers: sdong, yhchiang, rven

Reviewed By: rven

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39765

Fix formatting

Summary: Thanks Ankit!

Test Plan: none

Reviewers: ankgup87

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D36837

Summary: See the file.

Test Plan: none

Reviewers: lgalanis, meyering, MarkCallaghan, yhchiang, rven, anthony, kradhakrishnan, jayadev, sdong

Reviewed By: jayadev

Subscribers: jayadev, rdallman, andybons, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D36621