jerryshao commented on code in PR #9029:
URL: https://github.com/apache/gravitino/pull/9029#discussion_r2497711077
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api/src/main/java/org/apache/gravitino/rel/Table.java:
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@@ -44,6 +44,28 @@
@Evolving
public interface Table extends Auditable {
+ /**
+ * The reserved property name for the table format. This property indicates
the format of the
+ * table, such as "iceberg", "hudi", "lance", etc. Some catalog
implementations may use this
+ * property to determine the table format and perform specific operations
based on the format.
+ */
+ String PROPERTY_TABLE_FORMAT = "format";
+
+ /**
+ * The reserved property name to indicate whether the table is external.
This property is a
+ * boolean value represented as a string ("true" or "false"). if true (the
table is external), the
+ * drop operation will not delete the underlying data.
+ */
+ String PROPERTY_EXTERNAL = "external";
Review Comment:
It depends on the implementation of the different catalogs. Also, it can be
set by the user.
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