chl-wxp opened a new pull request, #11237:
URL: https://github.com/apache/seatunnel/pull/11237
### Purpose
This PR adds MetadataProvider SPI support for the Flink starter, so Flink
jobs can resolve datasource connection options from the metadata center by
using `metadata_datasource_id`.
Before this change, Flink jobs with configs such as:
```hocon
source {
Jdbc {
metadata_datasource_id = "test_catalog"
query = "select * from source"
}
}
could fail during connector option validation because required JDBC
options like url and driver were not resolved before FactoryUtil created the
source.
### Changes
- Load metadata center configuration from seatunnel.yaml in the Flink
starter.
- Resolve datasource configs through MetadataProviderManager before
applying legacy Metalake config handling.
- Keep compatibility with existing Metalake placeholder replacement logic.
- Update JDBC e2e coverage for MetadataProvider SPI on Flink.
- Ensure the Flink e2e job process has SEATUNNEL_HOME so it can locate
config/seatunnel.yaml.
- Keep Metalake legacy env behavior using METALAKE_ENABLED, METALAKE_TYPE,
and METALAKE_URL.
### Why
The MetadataProvider SPI expects metadata settings from:
seatunnel:
engine:
metadata:
enabled: true
kind: gravitino
gravitino:
uri: http://gravitino:8090
metalake: test_metalake
Flink starter needs this config before connector validation, otherwise
datasource options are not merged into the job config.
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