thswlsqls opened a new issue, #17083:
URL: https://github.com/apache/iceberg/issues/17083
**Apache Iceberg version**
main @ 49b89a8c5
**Query engine**
None (Java API / JDBC catalog)
**Please describe the bug**
The JDBC catalog Java API example in `docs/docs/jdbc.md` (line 68) assigns
the result of `CatalogUtil.buildIcebergCatalog("test_jdbc_catalog", properties,
hadoopConf)` directly to a `JdbcCatalog` variable.
`CatalogUtil.buildIcebergCatalog(String, Map<String, String>, Object)`
(`core/src/main/java/org/apache/iceberg/CatalogUtil.java` line 312) returns
`Catalog`, its only declared return type, not `JdbcCatalog`. Assigning
`Catalog` to a `JdbcCatalog` variable without an explicit cast is an
"incompatible types" compile error.
**Steps to reproduce**
Copy the code block from `docs/docs/jdbc.md` line 60-68 into a Java file and
compile: fails with `incompatible types: Catalog cannot be converted to
JdbcCatalog`.
**Additional context**
N/A.
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