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new 46f31844ebec [SPARK-52722][CORE] Deprecate JdbcRDD class
46f31844ebec is described below
commit 46f31844ebec145f6812a41ca22ce966e276c8ce
Author: Uros Stankovic <uros.stanko...@databricks.com>
AuthorDate: Sat Jul 12 16:26:36 2025 +0800
[SPARK-52722][CORE] Deprecate JdbcRDD class
`JdbcRDD` is legacy way to integrate Spark with JDBC sources.
Instead of it, users should use newer and more powerful JDBC data source.
### What changes were proposed in this pull request?
- Deprecating `JdbcRDD`
### Why are the changes needed?
`JdbcRDD` is legacy feature not being used a lot anymore and it raises
confusion because there are similar class called `JDBCRDD` that comes from the
JDBC connector.
### Does this PR introduce _any_ user-facing change?
`JdbcRDD` is deprecated now. [JDBC data source
(connector)](https://spark.apache.org/docs/latest/sql-data-sources-jdbc.html)
is more modern and more powerful way to connect to the JDBC source.
### How was this patch tested?
No testing needed, adding Java annotation to the class.
### Was this patch authored or co-authored using generative AI tooling?
No
Closes #51415 from urosstan-db/SPARK-52722-Deprecate-legacy-JdbcRDD.
Lead-authored-by: Uros Stankovic <uros.stanko...@databricks.com>
Co-authored-by: Wenchen Fan <cloud0...@gmail.com>
Signed-off-by: yangjie01 <yangji...@baidu.com>
---
core/src/main/scala/org/apache/spark/rdd/JdbcRDD.scala | 2 ++
1 file changed, 2 insertions(+)
diff --git a/core/src/main/scala/org/apache/spark/rdd/JdbcRDD.scala
b/core/src/main/scala/org/apache/spark/rdd/JdbcRDD.scala
index 8c10bcbc25a8..0edd3912afd6 100644
--- a/core/src/main/scala/org/apache/spark/rdd/JdbcRDD.scala
+++ b/core/src/main/scala/org/apache/spark/rdd/JdbcRDD.scala
@@ -54,7 +54,9 @@ private[spark] class JdbcPartition(idx: Int, val lower: Long,
val upper: Long) e
* @param mapRow a function from a ResultSet to a single row of the desired
result type(s).
* This should only call getInt, getString, etc; the RDD takes care of
calling next.
* The default maps a ResultSet to an array of Object.
+ * @deprecated Jdbc RDD is deprecated, consider using JDBC data source instead.
*/
+@deprecated("Jdbc RDD is deprecated, consider using JDBC data source
instead.", "4.1.0")
class JdbcRDD[T: ClassTag](
sc: SparkContext,
getConnection: () => Connection,
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