melin created SPARK-43776:
-----------------------------
Summary: [BUG] MySQL jdbc cursor has not taken effect
Key: SPARK-43776
URL: https://issues.apache.org/jira/browse/SPARK-43776
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 3.4.1, 3.5.0
Reporter: melin
JDBCRDD.scala: stmt.setFetchSize(options.fetchSize)
JdbcRDD.scala:
```
if (url.startsWith("jdbc:mysql:")) {
// setFetchSize(Integer.MIN_VALUE) is a mysql driver specific way to force
// streaming results, rather than pulling entire resultset into memory.
// See the below URL
//
dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-implementation-notes.html
stmt.setFetchSize(Integer.MIN_VALUE)
} else {
stmt.setFetchSize(100)
}
```
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