是的,Flink CDC 提供了一个针对 SAP HANA 数据库的 CDC 插件,叫做 HANA CDC 插件。
HANA CDC 插件提供了一种简单的方法来实时监听 SAP HANA 数据库中的数据变化,并将其转换为流式处理。
要使用 HANA CDC 插件,请按照以下步骤操作:
需要注意的是,在使用 HANA CDC 插件时,请注意 LogMiner 的参数设置,例如 database-hostname
、database-port
、database-user
等,以确保正确运行。
此外,HANA CDC 插件还提供了支持 snapshot、filter 和 incremental 的功能,可以根据实际需求选择合适的功能。
是的,Apache Flink目前已经支持HANA的CDC(Change Data Capture)插件。你可以使用Flink的HANA CDC connector来读取HANA数据库的变化数据。
以下是使用Flink HANA CDC connector的基本步骤:
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-hana_2.11</artifactId>
<version>${flink.version}</version>
</dependency>
FlinkJdbcInputFormat
来读取HANA数据库的变化数据。例如:```java
public class HanaCdcSource {
public static void main(String[] args) throws Exception {
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
// ...
HanaCdcSourceDescriptor descriptor = new HanaCdcSourceDescriptor(
"hana-cdc",
"jdbc:sap://host:port/DATABASE",
"USER",
"PASSWORD",
"SCHEMA",
"TABLE",
"$CDATA",
"ID",
"VERSION",
"OPERATION",
"WHEN_MATURED",
"CATALOG_NAMESPACE",
"QUALIFIER",
"SUB_RESOURCE",
"PAYLOAD",
"TRUNCATED_PAYLOAD",
"MESSAGE_HEADER",
"MESSAGE_FOOTER",
"FILTER_CONDITIONS",
"INCLUDE_OLD",
"INCLUDE_NEW",
"INCLUDE_CONTEXT_INFO",
"MAX_PARALLELISM",
"TARGET_CATALOG_NAMESPACE",
"TARGET_QUALIFIER",
"TARGET_SUB_RESOURCE",
"TARGET_PAYLOAD",
"TARGET_TRUNCATED_PAYLOAD",
"TARGET_MESSAGE_HEADER",
"TARGET_MESSAGE_FOOTER",
"TARGET_FILTER_CONDITIONS",
"TARGET_INCLUDE_OLD",
"TARGET_INCLUDE_NEW",
"TARGET_INCLUDE_CONTEXT_INFO",
"TARGET_MAX_PARALLELISM",
"EVENT_TIME_PRECISION",
"SOURCE_CATALOG_NAMESPACE",
"SOURCE_QUALIFIER",
"SOURCE_SUB_RESOURCE",
"SOURCE_PAYLOAD",
"SOURCE_TRUNCATED_PAYLOAD",
"SOURCE_MESSAGE_HEADER",
"SOURCE_MESSAGE_FOOTER",
"SOURCE_FILTER_CONDITIONS",
"SOURCE_INCLUDE_OLD",
"SOURCE_INCLUDE_NEW",
"SOURCE_INCLUDE_CONTEXT_INFO",
"SOURCE_MAX_PARALLELISM",
"SERIALIZATION_FORMAT",
"DESERIALIZATION_FORMAT",
"FIELD_DELIMITER",
"COLLECTION_ALIASES",
"MAP_KEYS_
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