hologres-connector-hive-base/src/main/java/com/alibaba/hologres/hive/output/HoloRecordCopyWriter.java
hologres-connector-kafka/src/main/java/com/alibaba/hologres/kafka/sink/writer/HoloCopyWriter.java

hologres-connector-hive-base/src/main/java/com/alibaba/hologres/hive/utils/JDBCUtils.java
hologres-connector-kafka/src/main/java/com/alibaba/hologres/kafka/utils/JDBCUtils.java