build(deps): bump com.arcadedb:arcadedb-network from 26.4.2 to 26.5.1 in /knowledge-graphs/java in the arcadedb group

[dependabot]

Bumps the arcadedb group in /knowledge-graphs/java with 1 update: com.arcadedb:arcadedb-network.

Updates com.arcadedb:arcadedb-network from 26.4.2 to 26.5.1

Release notes

Sourced from com.arcadedb:arcadedb-network's releases.

26.5.1

ArcadeDB 26.5.1 Release Notes

Overview

ArcadeDB 26.5.1 is a major release with over 270 commits and 128 resolved issues. The headline news is the new sparse vector index with server-side hybrid retrieval and INT8 quantization end-to-end, a huge wave of OpenCypher correctness fixes, query partitioning, a new EXTERNAL property storage layout for heavy values, plus a long list of HA, wire-protocol, and Studio improvements.

Major Highlights

Sparse Vector Index + Hybrid Retrieval

A brand-new LSM_SPARSE_VECTOR index brings sparse-embedding retrieval (BM25/SPLADE-style) directly into the engine, with server-side fusion of dense and sparse results and diversified top-K. (#4065, #4066, #4067, #4068, #4070, #4078, #4119, #4130)

• New index type LSM_SPARSE_VECTOR for sparse-embedding retrieval.
• vector.fuse(...) server-side hybrid fusion with RRF, DBSF and LINEAR strategies.
• vector.neighbors(...) gains groupBy / groupSize options for diversified retrieval, including dotted nested-field grouping (#4072) and traversal-integrated grouping (#4071).
• WAND / BlockMax-WAND dynamic pruning to scale sparse retrieval to 100M+ documents.
• Sparse-vector partitioning so a single index can be sharded by tenant / domain.
• Reranker SQL functions for two-stage retrieval pipelines.
• Bolt and HTTP wire support for the new sparse vector type, including $bytes / $int8 markers for INT8 query vectors.

INT8 Quantization for Dense Vectors

End-to-end INT8 support across the dense vector pipeline: ingest, storage and query path now share the same 8-bit representation, dramatically reducing disk and RSS without going through the FP32 path. (#3143, #4132, #4133, #4135, #4136)

EXTERNAL Property Storage

New paired-bucket layout for heavy property values (vectors, large strings, JSON). Hot row data stays compact in the main bucket while bulky payloads live in a sibling external bucket, sharply reducing scan cost on wide records. (#4027, #4028)

Query Partitioning

Query-level partitioning lands together with a partition-aware planner that prunes pruned partitions from SQL and Cypher plans, plus integrity guardrails for partitioned types. (#4087, #4088)

HA: Offline Cluster Bootstrap

You can now bootstrap a fresh HA cluster from a pre-seeded database (snapshot-and-restore), avoiding a full re-replication of large datasets when expanding or rebuilding a cluster. Includes regression integration tests for the cluster-formation edge cases. (#4147, #4205)

Production-Ready Helm Chart

The Helm chart has been reworked to align with the Raft-based HA subsystem introduced in 26.4.2 and is now suitable for production rollouts. (#4035)

Cypher: SHOW INDEXES / SHOW CONSTRAINTS

Standard Cypher administrative commands SHOW INDEXES and SHOW CONSTRAINTS are now supported. (#3972)

SQL: FIND REFERENCES

Restores the OrientDB-compatible FIND REFERENCES command for locating all records pointing to a given RID. (#4146)

C# End-to-End Tests

... (truncated)

Commits

• 43942a4 Set release version to 26.5.1
• b6d08fe fix: [gav] race in GraphAnalyticalView.awaitReady() exposed under load
• 70465d5 test: remove warning
• 5c27795 Merge branch 'main' of https://github.com/ArcadeData/arcadedb
• 98b8480 test: fixed failing test
• 9c6363a #4203 fix: [postgres] implement binary array deserialization to unblock JDBC ...
• 3a6cfae fix: [grpc] InsertStream surfaces commit-time constraint violations as a stre...
• 0744ff7 test: fixed bootstrap tests
• e2e6dc7 test: added test cases
• a5e1378 fix: [test] reset DefaultLogger.initialized in LoggerTest #3732 regressions (...
• Additional commits viewable in compare view

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