d5013459eb
Updates Rust and Java Lance dependencies to [v15.0.0-beta.6](https://github.com/lance-format/lance/releases/tag/v15.0.0-beta.6), pins Python tests to published pylance 15.0.0b6, and refreshes both lockfiles. Aligns Arrow 59, DataFusion 55, and PyO3 0.29; adapts execution plans and MemWAL directory handling, updates the ABI metadata test, and removes the obsolete Lance Arrow patch now fixed upstream. Validation: workspace clippy with all features/tests and warnings denied, cargo fmt, Python/CI Ruff checks, uv lock check, 16 CI-script tests, and targeted Python regressions (54 passed, 28 skipped); repository-wide Ruff retains existing documentation-example failures, and the upstream macOS wheel build failed while Linux and Windows wheels are published. --------- Co-authored-by: Daniel Rammer <hamersaw@protonmail.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
LanceDB Java Enterprise Client
Configuration and Initialization
LanceDB Cloud (legacy)
For LanceDB Cloud, the legacy hosted service, use the simplified builder API:
import com.lancedb.LanceDbNamespaceClientBuilder;
import org.lance.namespace.LanceNamespace;
// If your DB url is db://example-db, then your database here is example-db
LanceNamespace namespaceClient = LanceDbNamespaceClientBuilder.newBuilder()
.apiKey("your_lancedb_cloud_api_key")
.database("your_database_name")
.build();
LanceDB Enterprise
For LanceDB Enterprise deployments, use your custom endpoint:
LanceNamespace namespaceClient = LanceDbNamespaceClientBuilder.newBuilder()
.apiKey("your_lancedb_enterprise_api_key")
.database("your_database_name")
.endpoint("<your_enterprise_endpoint>")
.build();
RTE write path
Most table operations reach LanceDB through the LanceNamespace above, which is
generated from the Lance Namespace specification. The RTE LSM routes are not part
of that specification, so they are issued through a separate client:
import com.lancedb.LanceDbRestClient;
import com.lancedb.LanceDbTableRTE;
import com.lancedb.RTEWriteSpec;
LanceDbRestClient client = LanceDbNamespaceClientBuilder.newBuilder()
.apiKey("your_lancedb_cloud_api_key")
.database("your_database_name")
.buildRestClient();
LanceDbTableRTE rte = new LanceDbTableRTE(client, "my_table");
// Route future merge_insert upserts through the RTE, hash-bucketed by `id`.
rte.enableRTE(RTEWriteSpec.bucket("id", 16));
// ... merge_insert traffic ...
// Converge the fresh tier into the base table.
rte.checkpointRTE();
// Inspect live per-table-shard state.
rte.getRTEStats().ifPresent(stats -> stats.tableShards().forEach(tableShard ->
System.out.println(tableShard.shardId() + ": " + tableShard.sstables().size() + " SSTables")));
client.close();
maintainedIndexes is tri-state, and the null default is the opposite of what a Java
reader usually expects:
| Value | Meaning |
|---|---|
| unset (null) | Maintain every index the table has, including ones created later |
Collections.emptyList() |
Maintain none |
Arrays.asList("id_idx") |
Maintain exactly those |
Development
The parent POM includes https://maven.lance.org to resolve Lance beta and RC
dependencies. Use an explicit lance-core.version; numbered beta and RC versions
are Maven releases, not snapshots. Maven Central remains available for stable
and historical versions, as well as other dependencies.
Build:
./mvnw install -pl lancedb-core -am
Run tests:
./mvnw test -pl lancedb-core