Prepare for v2.6.3

Signed-off-by: yhmo <yihua.mo@zilliz.com>

Author: yhmo

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## milvus-sdk-cpp 2.6.3 (2026-05-06)
+### Feature
+- Support AddCollectionFunction(), AlterCollectionFunction(), and DropCollectionFunction() interfaces
+- Support BatchDescribeCollections() and DescribeReplicas() interfaces
+- Support RefreshLoad() and Optimize() interfaces
+
+### Bug
+- Fix a bug in DropIndex()
+
+
 ## milvus-sdk-cpp 2.6.2 (2026-04-13)
 ### Improvement
 - Use conan to manage dependencies

DEVELOPMENT.md

@@ -17,7 +17,7 @@ Currently, we tested the below platform and compilers for developing Milvus C++
 | Linux    | Ubuntu 20.04 | GCC 9.3.0            | Full (Compile, Lint, Testing) |
 | Linux    | Ubuntu 22.04 | GCC 11.4             | Full (Compile, Lint, Testing) |
 | Linux    | Fedora 38/39 | GCC 11.2+            | Compile, Testing              |
-| macOS    | macOS 14     | Apple Clang           | Compile, Testing              |
+| macOS    | macOS 15     | Apple Clang           | Compile, Testing              |
 | Windows  | Windows 2022 | MSVC 2022            | Compile, Testing              |
 
 ### Clone the code
@@ -41,9 +41,45 @@ This script could help you set a developing environment from a minimal installat
 
 ## Building from source
 
-You could build the debug versioned SDK with `make` in the source directory, or `make all-release` to build the release version.
+You can build the debug versioned SDK with `make` in the source directory, or `make all-release` to build the release version.
 
-By default, `make` uses [Conan 2](https://conan.io/) to manage dependencies (gRPC, protobuf, abseil, etc.). The `scripts/build.sh` handles Conan integration automatically.
+By default, `make` uses [Conan 2](https://conan.io/) to manage dependencies (gRPC, protobuf, abseil, etc.). The top-level `Makefile` delegates to `scripts/build.sh`, which handles Conan integration and CMake configuration automatically.
+
+Common top-level make targets:
+
+```shell
+$ make                    # debug build, same as make all-debug
+$ make all-release        # release build
+$ make test               # debug build with unit tests and mocked integration tests enabled
+$ make test-release       # release build with unit tests and mocked integration tests enabled
+$ make lint               # build with unit tests and run lint checks
+$ make package            # release build and create DEB/RPM packages under cmake_build/Pack
+$ make clean              # remove build directories
+```
+
+You can pass environment variables through `make` to control `scripts/build.sh` and CMake:
+
+```shell
+$ MILVUS_SDK_VERSION=v2.6.3 make all-release
+$ CMAKE_INSTALL_PREFIX=/opt/milvus make install
+$ BUILD_SHARED_LIBS=OFF make all-release
+$ CPPSTD=17 make test
+```
+
+`scripts/build.sh` also supports command-line flags. Most users should prefer the make targets above, but the script can be invoked directly for more control:
+
+```shell
+$ bash scripts/build.sh -t Debug            # debug build
+$ bash scripts/build.sh -t Release          # release build
+$ bash scripts/build.sh -u                  # build and run unit tests
+$ bash scripts/build.sh -l                  # run cpplint, clang-format, and clang-tidy checks
+$ bash scripts/build.sh -r                  # clean before build
+$ bash scripts/build.sh -z                  # build without Conan-managed dependencies
+$ bash scripts/build.sh -f -t Release       # release build without in-place clang-format
+$ bash scripts/build.sh -v v2.6.3 -t Release
+```
+
+`MILVUS_SDK_VERSION` is embedded into the SDK version string generated from `src/impl/version.h.in`. If you do not pass `MILVUS_SDK_VERSION` or `scripts/build.sh -v`, CMake derives the version from the latest reachable git tag. For release builds, pass the intended version explicitly or build from the release tag.
 
 ## Building without Conan
 

README.md

@@ -17,7 +17,7 @@ The following collection shows Milvus versions and recommended milvus-cpp-sdk ve
 | 2.3.x | 2.3(branch)  |
 | 2.4.x | v2.4.1  |
 | 2.5.x | v2.5.4  |
-| 2.6.x | v2.6.2  |
+| 2.6.x | v2.6.3  |
 
 
 ## Installation

doc/html/version_8h_source.html

@@ -85,7 +85,7 @@
 <div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div>
 <div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">// limitations under the License.</span></div>
 <div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
-<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#define MILVUS_SDK_VERSION &quot;v2.6.2&quot;</span></div>
+<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#define MILVUS_SDK_VERSION &quot;v2.6.3&quot;</span></div>
 <div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#define CMAKE_BUILD_TYPE &quot;Debug&quot;</span></div>
 </div><!-- fragment --></div><!-- contents -->
 <!-- start footer part -->

examples/README.md

@@ -45,6 +45,7 @@ Examples for MilvusClientV2:
 - `./cmake_build/examples/v2/sdk_json_v2`: example to show the usage of JSON field.
 - `./cmake_build/examples/v2/sdk_multi_analyzer_v2`: example to show the usage of multi-analyzer for full text match.
 - `./cmake_build/examples/v2/sdk_nullable_field_v2`: example to show the usage of nullable field.
+- `./cmake_build/examples/v2/sdk_optimize_v2`: example to show the usage of Optimize().
 - `./cmake_build/examples/v2/sdk_partition_key_v2`: example to show the usage of partition key.
 - `./cmake_build/examples/v2/sdk_rbac_v2`: example to show the usage of RBAC.
 - `./cmake_build/examples/v2/sdk_rerank_function_v2`: example to show the usage of rerank function.

scripts/build.sh

@@ -25,7 +25,7 @@ MAKE_CLEAN="OFF"
 RUN_FORMAT="ON"
 RUN_CPPLINT="OFF"
 BUILD_COVERAGE="OFF"
-MILVUS_SDK_VERSION=${MILVUS_SDK_VERSION:-v2.6.2}
+MILVUS_SDK_VERSION=${MILVUS_SDK_VERSION:-}
 DO_INSTALL="OFF"
 CMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX:-/usr/local}
 BUILD_SHARED_LIBS=${BUILD_SHARED_LIBS:-ON}
@@ -94,6 +94,7 @@ while getopts "t:v:ulrcsphizf" arg; do
 
 parameter:
 -t: build type(default: Debug)
+-v: sdk version override(default: latest git tag from CMake)
 -l: run cpplint, clang-format and clang-tidy(default: OFF)
 -u: build with unit testing(default: OFF)
 -r: clean before build
@@ -205,12 +206,17 @@ else
   fi
 fi
 
+CMAKE_VERSION_ARG=""
+if [[ -n "${MILVUS_SDK_VERSION}" ]]; then
+  CMAKE_VERSION_ARG="-DMILVUS_SDK_VERSION=${MILVUS_SDK_VERSION}"
+fi
+
 CMAKE_CMD="cmake \
 -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \
 -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
 -DMILVUS_BUILD_TEST=${BUILD_TEST} \
 -DMILVUS_BUILD_COVERAGE=${BUILD_COVERAGE} \
--DMILVUS_SDK_VERSION=${MILVUS_SDK_VERSION} \
+${CMAKE_VERSION_ARG} \
 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} \
 -DBUILD_SHARED_LIBS=${BUILD_SHARED_LIBS} \
 -DGRPC_PATH=${GRPC_PATH} \