* feat(spark): add Apache Spark database driver
Spark Thrift Server speaks the HiveServer2 protocol, so the Spark driver
reuses the hive-jdbc agent runtime. Registers spark (agentKey=spark,
defaultPort=10015) across the manifest, DatabaseType enum, agent catalog,
SQL dialects, connection dialog, and a SparkAgent built on AbstractJdbcAgent.
* feat(spark): add catalog support and official logo
SparkAgent now supports Spark 3.4+ multi-catalog (Paimon, Lance, Iceberg)
via catalog=<name> in url_params, mirroring the StarRocks catalog flow:
- afterConnect switches to the configured catalog via USE <catalog>
- listDatabases returns the catalog name when SHOW DATABASES is empty
(catalogs like Lance expose tables at the catalog root with no databases)
- listTables uses SHOW TABLES IN <catalog>[.<schema>] uniformly, working
for both catalog-root tables (Lance) and catalog.schema tables (Paimon)
- setSchemaSQL qualifies USE with the catalog to prevent resetting to
spark_catalog on schema switches
- buildJdbcUrl omits database from the URL path
Also replaces the placeholder lightning icon with the official Apache Spark
logo (spark-logo.png from spark.apache.org).
* fix(spark): use catalog-qualified DESCRIBE for column retrieval
getColumnsFromDescribe used USE <schema> + DESCRIBE <table>, which
generated USE `catalog`.`catalog` when the sidebar passed the catalog
name as the schema (Lance case where the catalog is the only node).
This failed and fell back to JDBC metadata which also returned nothing,
resulting in an empty DDL (CREATE TABLE ... ()).
Now uses DESCRIBE `catalog`.`table` directly when a catalog is
configured, bypassing USE entirely. Also fixes setSchemaSQL to treat
schema == catalog as catalog-only (no .schema suffix).
* fix(ci): add spark to metadata coverage matrix and BRIDGE_REQUIRED_TYPES
- agents/metadata-constraint-coverage.tsv: register spark as
intentional-fallback (SHOW TABLES/SHOW DATABASES, like Hive/TDengine)
- packages/node-core/src/diagnostics.ts: add spark to
BRIDGE_REQUIRED_TYPES (mcpMode=bridge, matches manifest)
* fix(ci): add spark to DBX_CONNECTION_TYPE_DESCRIPTION in mcp-server
The driver-manifest test asserts every manifest dbType appears in the
MCP server's connection type description string.
* feat(core): implement PIP-0001 database connection timeout recovery
- Add DbOperationBudget struct for unified execution budget model
- Add deadpool create/recycle timeout for PostgreSQL pools
- Add checkout_postgres_client helper replacing 14 bare pool.get() calls
with timeout + cancel token support
- Fix PostgreSQL TLS cancel: rebuild TLS connector from stored context,
fallback to NoTls on failure
- Add timeout to MySQL kill_query and kill_query_with_opts (5s)
- Extend is_connection_error to match deadpool pool timeout messages
- Unify keepalive default to 30s (was 60s Rust / 0s frontend mismatch)
- Inject PostgreSQL TCP keepalive params (idle=30s, interval=10s, retries=3)
- Inject MySQL tcp_keepalive=30s in OptsBuilder
- Make MySQL inactive_connection_ttl configurable from idle_timeout_secs
- Add stage-based structured logging for pool.checkout/health.check/cancel
- Store PostgresCancelContext in AppState for TLS cancel reconstruction
- Clean up cancel contexts on pool removal/drain
- Add unit tests for DbOperationBudget and pool timeout error detection
* fix(core): align timeout recovery with PIP-0001
* fix(core): handle timeout recovery review issues
* fix(core): complete connection timeout recovery
* fix(core): fall back postgres cancel connector build
* refactor: revert comment translations to English in connection.rs and query.rs
- Revert DbOperationBudget doc comments to English (query.rs)
- Revert PostgresCancelContext and TLS cancel comments to English (connection.rs)
- Keep Chinese error-matching strings in is_connection_error unchanged
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Co-authored-by: onceMisery <onceMisery@users.noreply.github.com>
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