danny0405 commented on code in PR #10857:
URL: https://github.com/apache/hudi/pull/10857#discussion_r1535010395
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hudi-common/src/main/java/org/apache/hudi/common/model/FirstValueAvroPayload.java:
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@@ -27,6 +27,52 @@
import java.util.Properties;
+/**
+ * Payload clazz that is used for Hudi Table.
+ *
+ * <p>Simplified FirstValueAvroPayload Logic:
+ * <pre>
+ *
+ * Illustration with simple data.
+ * the order field is 'ts', recordkey is 'id' and schema is :
+ * {
+ * [
+ * {"name":"id","type":"string"},
+ * {"name":"ts","type":"long"},
+ * {"name":"name","type":"string"},
+ * {"name":"price","type":"string"}
+ * ]
+ * }
+ *
+ * case 1
+ * Current data:
+ * id ts name price
+ * 1 1 name_1 price_1
+ * Insert data:
+ * id ts name price
+ * 1 1 name_2 price_2
Review Comment:
`name_2 price_2` -> `name_2 price_2`
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