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https://issues.apache.org/jira/browse/FLINK-6781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031903#comment-16031903
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ASF GitHub Bot commented on FLINK-6781:
---------------------------------------
Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/4036#discussion_r119464746
--- Diff:
flink-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCInputFormat.java
---
@@ -378,6 +388,11 @@ public JDBCInputFormatBuilder
setRowTypeInfo(RowTypeInfo rowTypeInfo) {
return this;
}
+ public JDBCInputFormatBuilder setFetchSize(int fetchSize) {
+ format.fetchSize = fetchSize;
--- End diff --
let's add a `Preconditions` check that fetchSize is greater than 0.
> Make fetch size configurable in JDBCInputFormat
> -----------------------------------------------
>
> Key: FLINK-6781
> URL: https://issues.apache.org/jira/browse/FLINK-6781
> Project: Flink
> Issue Type: Improvement
> Components: Batch Connectors and Input/Output Formats
> Affects Versions: 1.2.1
> Reporter: Maximilian Bode
> Assignee: Maximilian Bode
> Priority: Minor
>
> For batch jobs that read from large tables, it is useful to be able to
> configure the SQL statement's fetch size. In particular, for Oracle's JDBC
> driver the default fetch size is 10.
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