Github user mbode commented on a diff in the pull request:
https://github.com/apache/flink/pull/4036#discussion_r119528882
--- Diff:
flink-connectors/flink-jdbc/src/test/java/org/apache/flink/api/java/io/jdbc/JDBCInputFormatTest.java
---
@@ -101,6 +105,33 @@ public void testIncompleteConfiguration() throws
IOException {
}
@Test
+ public void defaultFetchSizeIsUsedIfNotConfiguredOtherwise() throws
SQLException {
+ jdbcInputFormat = JDBCInputFormat.buildJDBCInputFormat()
+ .setDrivername(DRIVER_CLASS)
+ .setDBUrl(DB_URL)
+ .setQuery(SELECT_ALL_BOOKS)
+ .setRowTypeInfo(ROW_TYPE_INFO)
+ .finish();
+ jdbcInputFormat.openInputFormat();
+ assertThat(jdbcInputFormat.getStatement().getFetchSize(),
equalTo(1));
--- End diff --
The idea was to make sure that existing behavior is not broken. I have made
the dependency on the fact that derby is used in this test explicit.
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