Support minhash function

[yhmo]

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Pull request overview

This PR adds SDK-level support for the Milvus MinHash function by extending the client-side FunctionType enum, updating gRPC↔SDK conversion logic, and adding coverage via unit/integration tests plus a runnable example.

Changes:

• Add MINHASH (and MOLFINGERPRINT) to io.milvus.common.clientenum.FunctionType, and introduce fromCode() mapping.
• Update SchemaUtils.convertFromGrpcFunction() to map function types by numeric code instead of proto enum name.
• Add MinHash-specific tests (unit + docker integration), update docker image tags, and add a new MinHash example.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
sdk-core/src/main/java/io/milvus/v2/utils/SchemaUtils.java	Switch function-type conversion from name-based mapping to code-based mapping.
sdk-core/src/main/java/io/milvus/common/clientenum/FunctionType.java	Extend function types and add code/name conversion helpers.
sdk-core/src/test/java/io/milvus/v2/utils/SchemaUtilsTest.java	Add/adjust unit tests for MinHash function conversion.
sdk-core/src/test/java/io/milvus/v2/client/MilvusClientV2DockerTest.java	Add docker integration test that creates/searches with a MinHash function.
sdk-core/src/test/java/io/milvus/docker-compose.yml	Update Milvus docker image tag used in tests.
sdk-core/src/test/java/io/milvus/docker-compose-multi.yml	Update Milvus docker image tag used in multi-standalone tests.
examples/src/main/java/io/milvus/v2/MinhashFunctionExample.java	Add end-to-end MinHash usage example (create, insert, search, dedup-like logic).

Comments suppressed due to low confidence (1)

sdk-core/src/main/java/io/milvus/common/clientenum/FunctionType.java:63

• FunctionType.fromName()/fromCode() currently return null when no match is found (and fromName(null) will throw NPE). Since this enum already has UNKNOWN, returning UNKNOWN is safer and keeps downstream code (like SchemaUtils conversion/builders) non-null by default.

    public static FunctionType fromName(String name) {
        for (FunctionType type : FunctionType.values()) {
            if (type.getName().equals(name) || type.name().equals(name)) {
                return type;
            }
        }
        return null;
    }

    public static FunctionType fromCode(int code) {
        for (FunctionType type : FunctionType.values()) {
            if (type.getCode() == code) {
                return type;
            }
        }
        return null;
    }

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[codecov]

Codecov Report

❌ Patch coverage is 84.61538% with 2 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (master@00d5f35). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...java/io/milvus/common/clientenum/FunctionType.java	80.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1940   +/-   ##
=========================================
  Coverage          ?   62.99%           
  Complexity        ?     3999           
=========================================
  Files             ?      467           
  Lines             ?    25814           
  Branches          ?     2376           
=========================================
  Hits              ?    16262           
  Misses            ?     8217           
  Partials          ?     1335           

Files with missing lines	Coverage Δ
.../src/main/java/io/milvus/v2/utils/SchemaUtils.java	82.11% <100.00%> (ø)
...java/io/milvus/common/clientenum/FunctionType.java	76.19% <80.00%> (ø)

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[yhmo]

sdk-core/src/main/java/io/milvus/common/clientenum/FunctionType.java line:26
Medium ---- Switching RERANK from "RERANK" to "Rerank" and making fromName() coerce unknown strings to UNKNOWN changes the public FunctionType contract for existing callers, even though the MinHash fix only needs the new fromCode() path in SchemaUtils. Any caller that serialized getName(), looked up fromName("RERANK"), or used null to detect unsupported names will now behave differently; could we keep the old getName()/fromName() semantics and limit this PR to adding MINHASH, MOLFINGERPRINT, and fromCode()?