[
https://issues.apache.org/jira/browse/SPARK-43776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
melin updated SPARK-43776:
--------------------------
Description:
JDBCRDD.scala: stmt.setFetchSize(options.fetchSize)
JdbcRDD.scala:
{code:java}
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) }
{code}
was:
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)
}
```
> [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
> Priority: Major
>
> JDBCRDD.scala: stmt.setFetchSize(options.fetchSize)
>
> JdbcRDD.scala:
> {code:java}
> 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) }
> {code}
>
>
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