Summary:
And add releases that should have been added before (6.6 - 6.8)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6594

Test Plan: facebook automated test (so much easier than running myself)

Reviewed By: riversand963

Differential Revision: D20649106

Pulled By: pdillinger

fbshipit-source-id: 78832449d9295580282cebf117e3968362fbdc69

Summary:
https://github.com/facebook/rocksdb/pull/6060 broke forward compatiblity for releases from 3.10 to 4.2. Update HISTORY.md to mention it. Also remove it from the compatibility tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6085

Differential Revision: D18691694

fbshipit-source-id: 4ef903783dc722b8a4d3e8229abbf0f021a114c9

Summary:
This reverts commit 351e2540.

All branches have been fixed to buildable on FB environments, so we can revert it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5999

Differential Revision: D18281947

fbshipit-source-id: 6deaaf1b5df2349eee5d6ed9b91208cd7e23ec8e

Summary:
We have updated earlier release branches going back to 5.5 so they are
built using gcc7 by default. Disabling ancient versions before that
until we figure out a plan for them.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5990

Test Plan: Ran the script locally.

Differential Revision: D18252386

Pulled By: ltamasi

fbshipit-source-id: a7bbb30dc52ff2eaaf31a29ecc79f7cf4e2834dc

Summary:
More release branches are created. We should include them in continuous format compatibility checks.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5985

Test Plan: Let's see whether it is passes.

Differential Revision: D18226532

fbshipit-source-id: 75d8cad5b03ccea4ce16f00cea1f8b7893b0c0c8

Summary:
tools/check_format_compatible.sh is lagged behind. Catch up.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5518

Test Plan: Run the command

Differential Revision: D16063180

fbshipit-source-id: d063eb42df9653dec06a2cf0fb982b8a60ca3d2f

Summary:
internal task: T35568575
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5199

Differential Revision: D14962794

Pulled By: gfosco

fbshipit-source-id: 93838ede6d0235eaecff90d200faed9a8515bbbe

Summary:
if an operation just involves a single column family, then we do
not have to set the kInAtomicGroup tag when writing to MANIFEST. This change
can fix a compatibility test failure, i.e. 5.15 and earlier cannot recognize
kInAtomicGroup tag.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4981

Differential Revision: D14072687

Pulled By: riversand963

fbshipit-source-id: 46b0c61e399f16c6b7169de0b33430d0ed90d6d4

Summary:
Include 5.16 and 5.17 in check_format_compatible.sh
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4634

Differential Revision: D12947140

Pulled By: riversand963

fbshipit-source-id: 79852b76d5139b2f31db59ed14cb368be01f2c32

Summary:
Test plan
```
$cd rocksdb/
$./tools/check_format_compatible.sh
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4310

Differential Revision: D9498125

Pulled By: riversand963

fbshipit-source-id: 83cf6992949a52199e7812bb41bc9281ac271a24

Summary:
Make sure that some recent releases can read master's option files while ignoring unknown options. Also add two more recent release branches.
Closes https://github.com/facebook/rocksdb/pull/3994

Differential Revision: D8409499

Pulled By: siying

fbshipit-source-id: 1b025f19ba288da0517f6b4572797573e23e23c2

Summary: Closes https://github.com/facebook/rocksdb/pull/3646

Differential Revision: D7384727

Pulled By: sagar0

fbshipit-source-id: f713af7adb2ffea5303bbf0fac8a8a1630af7b38

Summary: Closes https://github.com/facebook/rocksdb/pull/3383

Differential Revision: D6762375

Pulled By: siying

fbshipit-source-id: dc1e0dc9718ffb59ffe42e2a2c844b67f935a5fb

Summary:
Add recent versions for format compatible test. We should probably update the script to auto include available versions (by looking at include/rocksdb/versions.h and deduce branch names), but we can do it later.
Closes https://github.com/facebook/rocksdb/pull/3233

Differential Revision: D6503631

Pulled By: yiwu-arbug

fbshipit-source-id: e2b01d1ef6e784ff6ffa1bd75d741755e3c69a8c

Summary:
"/bin/bash" is a Linuxism.  "/usr/bin/env bash" is portable.
Closes https://github.com/facebook/rocksdb/pull/2646

Differential Revision: D5556259

Pulled By: ajkr

fbshipit-source-id: cbffd38ecdbfffb2438969ec007ab345ed893ccb

Summary:
For forward_compatible_checkout_objs the local branch is already created in previous step. This patch avoid recreating it. This should address "fatal: A branch named '3.10.fb' already exists." errors.
Closes https://github.com/facebook/rocksdb/pull/2606

Differential Revision: D5443786

Pulled By: maysamyabandeh

fbshipit-source-id: 69d5a67b87677429cf36e3a467bd114d341f3b9c

Summary:
The new local branch specified with -b cannot be called master. Use tmp prefix to avoid name collision.
Closes https://github.com/facebook/rocksdb/pull/2600

Differential Revision: D5442944

Pulled By: maysamyabandeh

fbshipit-source-id: 4a623d9b21d6cc01bee812b2799790315bdf5f6e

Summary:
This will fix the error: "error: pathspec '2.2.fb.branch' did not match any file(s) known to git."

Tested by manually sshing to sandcastle and running the command.
Closes https://github.com/facebook/rocksdb/pull/2599

Differential Revision: D5441130

Pulled By: maysamyabandeh

fbshipit-source-id: a22fd6a52221471bafbba8990394b499535e5812

Summary:
The comma "," is not a valid separator for bash arrays.
Closes https://github.com/facebook/rocksdb/pull/2516

Differential Revision: D5348101

Pulled By: yiwu-arbug

fbshipit-source-id: 8f0afdac368e21076eb7366b7df7dbaaf158cf96

Summary:
update compatible test to include 5.5 and 5.6 branch.
Closes https://github.com/facebook/rocksdb/pull/2501

Differential Revision: D5325220

Pulled By: yiwu-arbug

fbshipit-source-id: 5f5271491e6dd2d7b2cf73a7142f38a571553bc4

Summary:
In a previous commit, I changed the way to checkout release branches from "git checkout <branch_name>" to "git checkout origin/<branch_name>". However, this doesn't seem to work in our CI environment. Revert it.
Closes https://github.com/facebook/rocksdb/pull/2189

Differential Revision: D4922294

Pulled By: siying

fbshipit-source-id: 482c17f9b05e6ccb190876b050682fe5a458103d

Summary:
tools/check_format_compatible.sh will check a newer version of RocksDB can open option files generated by older version releases. In order to achieve that, a new parameter "--try_load_options" is added to ldb. With this parameter set, if option file exists, we load the option file and use it to open the DB. With this opiton set, we can validate option loading logic.
Closes https://github.com/facebook/rocksdb/pull/2178

Differential Revision: D4914989

Pulled By: siying

fbshipit-source-id: db114f7724fcb41e5e9483116d84d7c4b8389ca4

Summary:
Need to add more recent versions to tools/check_format_compatible.sh to meka sure backward and forward compatibility.
Closes https://github.com/facebook/rocksdb/pull/2175

Differential Revision: D4911585

Pulled By: siying

fbshipit-source-id: 943e6488757efb11bb6720d811c7ba949915c9de

Summary:
Some older tags don't run GCC 4.8 with FB internal setting. Fixed them and created branches. Change the format compatible script accordingly.

Also add more releases to check format compatibility.

Summary:
The sandcastle setup doesn't provide a remote with our branches. Need
to fetch them directly from github.

Test Plan:
ran script on devserver and the relevant commands on a sandcastle
host.

Reviewers: IslamAbdelRahman, lightmark, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D59511

Test Plan: Run the compatibility test

Subscribers: leveldb, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D59385

Summary:
We had to go back and update the g++ path for 4.4.fb-4.8.fb. So the
path is now fixed on the branches, but can't be fixed on the tags since they're
immutable. By making format compatibility tests use branch names (when
available), backported fixes like this will be used without having to re-release.

Also removed v1.5.7 and v2.1 because make fails.

Test Plan:
  $ build_tools/rocksdb-lego-determinator run_format_compatible

Reviewers: sdong, lightmark, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D59355

tools/check_format_compatible.sh to use consistent version when testing backward and forward compatibility

Summary: Test seems to fail if we don't use consistent version between testing forward and backward compatibility.

Test Plan: Run the script (with some version removed manually to make it shorter)

Reviewers: IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D55773

Summary: After introducing a less forward-compatible change, update the backward compatible checking tool.

Test Plan: Run it.

Reviewers: IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: IslamAbdelRahman, leveldb, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D55695

Summary: Add a script, which checks out changes from a list of tags, build them and load the same data into it. In the last, checkout the target build and make sure it can successfully open DB and read all the data. It is implemented through ldb tool, because ldb tool is available from all previous builds so that we don't have to cross build anything.

Test Plan: Run the script.

Reviewers: yhchiang, rven, anthony, kradhakrishnan, igor

Reviewed By: igor

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D36639