Yan created SPARK-3306:
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Summary: Addition of external resource dependency in executors
Key: SPARK-3306
URL: https://issues.apache.org/jira/browse/SPARK-3306
Project: Spark
Issue Type: New Feature
Components: Spark Core
Reporter: Yan
Currently, Spark executors only support static and read-only external resources
of side files and jar files. With emerging disparate data sources, there is a
need to support more versatile external resources, such as connections to data
sources, to facilitate efficient data accesses to the sources. For one, the
JDBCRDD, with some modifications, could benefit from this feature by reusing
established JDBC connections from the same Spark context before.
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