Changes:
1. Since travis-ci.org is terminated, we are moving CI of this repo to PingCAP internal jenkins CI. Removing all travis related scripts.
2. remove `./rust-toolchain` file, and `Make build` will download the file from latest TiKV master, so we can keep in sync with TiKV.
3. fixing flaky test_auto_roll_max_size_info_log. In the background rocksdb can trigger log rotation. If log rotates exactly when the test check for LOG file existence, the check can fail. Removing the check.
Signed-off-by: Yi Wu <yiwu@pingcap.com>

update rocksdb to include tikv/rocksdb#244 for master
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
Co-authored-by: Yi Wu <yiwu@pingcap.com>

Ref: tikv/rocksdb#pr243
Signed-off-by: MrCroxx <mrcroxx@outlook.com>

Signed-off-by: ti-srebot <ti-srebot@pingcap.com>

Add picked level of ingestion info and num_input_files_at_output_level of compaction info
Signed-off-by: Connor1996 <zbk602423539@gmail.com>

making get_write_global_seqno immutable method.
Signed-off-by: v01dstar <yang.zhang@pingcap.com>

See the issue [here](https://github.com/tikv/tikv/issues/10430) 

This PR provides the Rust API of setting `IngestExternalFileOptions::write_global_seqno`
Signed-off-by: Yang Zhang <yang.zhang@pingcap.com>
Signed-off-by: v01dstar <yang.zhang@pingcap.com>

update titan to include tikv/titan#210 for master.
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>

Signed-off-by: tabokie <xy.tao@outlook.com>

Signed-off-by: tabokie <xy.tao@outlook.com>

Signed-off-by: tabokie <xy.tao@outlook.com>

Signed-off-by: ti-srebot <ti-srebot@pingcap.com>

Signed-off-by: ti-srebot <ti-srebot@pingcap.com>

The rocksdb cloud integration currently cannot link, and we don't have current plan for it. The rocksdb cloud submodule makes code checkout slow. We are removing it for now.
Signed-off-by: Yi Wu <yiwu@pingcap.com>

Zstd introduces performance improvement since 1.4.7. 
We need to benchmark and upgrade to the latest version.
Signed-off-by: Zhenhan Gong <zhenhan.gong@gmail.com>

Signed-off-by: Yilin Chen <sticnarf@gmail.com>
Co-authored-by: ti-srebot <ti-srebot@pingcap.com>

Signed-off-by: qupeng <qupeng@pingcap.com>

Signed-off-by: qupeng <qupeng@pingcap.com>

update titan to include tikv/titan#201 for master
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
Co-authored-by: yiwu-arbug <yiwu@pingcap.com>

Allow sst partitioner methods to be mutable. On RocksDB side these methods are not const methods, thus should be mutable.
Signed-off-by: Yi Wu <yiwu@pingcap.com>

Signed-off-by: tabokie <xy.tao@outlook.com>

Accept generic construct instead of Arc to avoid nested arc required to bridge different crates. Also fix a missing export.
Signed-off-by: tabokie <xy.tao@outlook.com>

`uname -p` is unportable on some platforms.
Signed-off-by: Yang Keao <keao.yang@yahoo.com>
Co-authored-by: Xinye Tao <xy.tao@outlook.com>

Signed-off-by: ti-srebot <ti-srebot@pingcap.com>

Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>

Signed-off-by: tabokie <xy.tao@outlook.com>

Add event listener for flush begin, compaction begin and subcompaction begin/completed.
Signed-off-by: tabokie <xy.tao@outlook.com>

port related interface to rust, add `file_system_inspected_env` factory method.
Signed-off-by: tabokie <xy.tao@outlook.com>

Add create_missing_column_families for DBOptions, so we can open a database with added column families.

Close #362.
Signed-off-by: Peilun Li <peilun.li@conflux-chain.org>

update titan to include tikv/titan#199 for master
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
Co-authored-by: yiwu-arbug <yiwu@pingcap.com>

* update rocksdb to atomize RenameFile in KeyManagedEncryptedEnv
* removed redundant rename logic from key manager
Signed-off-by: Xintao <hunterlxt@live.com>

Signed-off-by: tabokie <xy.tao@outlook.com>