* #931 remove collector from config

* #931 fix test_metrics build error

* Add push mode for prometheus monitor

* format code

* fix for comments

* fix test_MetricBase bug

* Change ip to address in config

* [skip ci]#668 - Update badge of README

* Fix README.md

* Fix README.md

* Merge remote-tracking branch 'upstream/master'

* #910 Change c++ standard to c++17

* Remove unused headers

* delete redundant check (#860)

* add changelog
Co-authored-by: NJin Hai <hai.jin@zilliz.com>

* #815 add S3 client

* #815 update S3 interface

* #815 add bucket_name_ as class field, add StartService() and StopService()

* #815 add FileIOReader and FileIOWriter

* #815 fix unittest test_storage build error

* #815 add GetObjectStr()

* #815 add S3IOReader/S3IOWriter

* #815 add ListObjects(), support put string with \0, launch S3 service when server start

* #815 read/write s3 index file pass

* #815 add MinIO related config

* #815 fix storage config issuegs

* #815 code clean

* #815 use local file or S3 via minio_enable

* #815 add DeleteObjects() for S3

* #815 print out IO rate when read_index & write_index

* #815 clean code

* #815 fix centos build error

* #815 support MinIO storage

* #815 fix typo

* Add log to debug #678

* Rename nsg_mix to RNSG in C++ sdk #735

* [skip ci] change __function__

* clang-format

* IVFTest.gpu_seal_test unittest failed #805

* rerun jenkins CI

* fix test_util

* add cpu mode for built-in Faiss

* delete customization options on build stage

* delete faiss version

* delete customization options on build stage

* fix unittest problem in cpu mode

* fix unittest problem in cpu mode
Co-authored-by: Nquicksilver <zhifeng.zhang@zilliz.com>
Co-authored-by: NJin Hai <hai.jin@zilliz.com>

*  '#831 fix exe_path judge error'

* #831 fix exe_path judge error

* #766 If partition tag is similar, wrong partition is searched

* #766 If partition tag is similar, wrong partition is searched

* reorder changelog id

* typo

* replace arrow

* format

* update changelog

* code-style

* fix bug

* fix 2

* fix 3

* fix 4

* change build timeout on Jenkinsfile

* remove build openblas/lapack and use find_package

* update ubuntu_build_deps.sh

* update build image

* update build image

* update CHANGELOG

* trigger ci

* update image

* update centos build envvironment image on Jenkins CI

* trigger ci

* Put C++ sdk out of milvus/core

* Delete core/src/sdk

* Add clang-format for c++ sdk

* Add README.md for sdk

* Server unittest run failed on low-end server

* set gpu_cache_capacity to 1G

* #715 fix Milvus crash when searching and building index simultaneously using SQ8H

* #715 fix update

* #665 support get/set config via CLI

* #665 support get/set config via CLI

* #665 add unittest for config CLI

* #665 remove config_node_map_

* #665 remove config_node_map_

* #665 fix clang-format

* #665 fix clang-format

* #665 update changelog

* #665 code clean

* #665 update API interface

* #665 update API interface

* #665 handle server status

* #665 handle unknown command

* #665 update debug log

* #665 rollback CmdRequest.cpp

* refactoring(create_table done)

* refactoring

* refactor server delivery (insert done)

* refactoring server module (count_table done)

* server refactor done

* cmake pass

* refactor server module done.

* set grpc response status correctly

* format done.

* fix redefine ErrorMap()

* optimize insert reducing ids data copy

* optimize grpc request with reducing data copy

* clang format

* [skip ci] Refactor server module done. update changlog. prepare for PR

* remove explicit and change int32_t to int64_t

* add TracerUtil

* Interceptor ok

* add handler

* add context

* minor update

* keep span in trace context

* add span in search okay

* Update Context.cpp

* refactor

* refactor

* refactor

* format

* add context in SearchJob

* trace search okay

* add back finish span in interceptor

* add namespace

* add tracing config in server config

* add random id

* debug mode okay

* update CMakeLists

* add opentracing to cmake

* update unittest

* add tracing namespace

* remove std::run_time error

* add lock when erasing context_map

* update tracing config

* lint

* update CHANGELOG

* small fix

* fix server unit test

* fix scheduler unit test

* fix db unit test

* lint

* fix db unit test gpu version

* rename to tracing_config

* fix

* update

* trigger ci

* #709 show last commit id when server start

* #709 fix typo error

* #670 Random failure of unittest db_test::SEARCH_TEST

* add an important log

* add an important log

* add an important log

* #674 server down in stability test

* add more log

* remove log

* #696 metric_type changed from IP to L2

* #670 Random failure of unittest db_test::SEARCH_TEST

* add an important log

* add an important log

* add an important log

* #674 server down in stability test

* add more log

* remove log