shunping commented on code in PR #36045:
URL: https://github.com/apache/beam/pull/36045#discussion_r2356021309
##########
sdks/java/io/jdbc/src/main/java/org/apache/beam/sdk/io/jdbc/providers/ReadFromMySqlSchemaTransformProvider.java:
##########
@@ -43,4 +51,31 @@ public String description() {
protected String jdbcType() {
return MYSQL;
}
+
+ @Override
+ public @UnknownKeyFor @NonNull @Initialized SchemaTransform from(
+ JdbcReadSchemaTransformConfiguration configuration) {
+ String jdbcType = configuration.getJdbcType();
+ if (jdbcType != null && !jdbcType.isEmpty() &&
!jdbcType.equals(jdbcType())) {
+ throw new IllegalArgumentException(
+ String.format("Wrong JDBC type. Expected '%s' but got '%s'",
jdbcType(), jdbcType));
+ }
+
+ Integer fetchSize = configuration.getFetchSize();
+ if (fetchSize != null
+ && fetchSize > 0
+ && configuration.getJdbcUrl() != null
+ && !configuration.getJdbcUrl().contains("useCursorFetch=true")) {
+ LOG.warn(
+ "The fetchSize option is ignored. It is required to set
useCursorFetch=true"
+ + " in the JDBC URL when using fetchSize for MySQL");
Review Comment:
Done.
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