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https://issues.apache.org/jira/browse/FLINK-36044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yanquan Lv updated FLINK-36044:
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Fix Version/s: (was: cdc-3.1.0)
> In flink-connector-mysql-cdc-2.4.0 version, scan.snapshot.fetch.size does not
> take effect
> -----------------------------------------------------------------------------------------
>
> Key: FLINK-36044
> URL: https://issues.apache.org/jira/browse/FLINK-36044
> Project: Flink
> Issue Type: Bug
> Components: Flink CDC
> Reporter: zhanghuaibei
> Priority: Major
> Labels: CDC
>
> In version 2.4 of the code, scan.snapshot.fetch.size was not read and loaded.
> In this version, how to implement MySQL stream reading, useCursorfetch=true,
> and debezium.snapshot.fetch.size for processing? can set Interger.MIN_VALUE?
> Is ResultSet.TYPE-FORWARD_ONLY necessary?
>
> flink-connector-mysql-cdc/src/main/java/com/ververica/cdc/connectors/mysql/source/utils/StatementUtils.java,
>
> private static PreparedStatement initStatement(JdbcConnection jdbc, String
> sql, int fetchSize)
> throws SQLException {
> final Connection connection = jdbc.connection();
> connection.setAutoCommit(false);
> final PreparedStatement statement = connection.prepareStatement(sql);
> statement.setFetchSize(fetchSize);
> return statement;
> },Is this writing method correct?
> This configuration does not work, and does it have a big impact on memory?
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