[spark] Support CREATE TABLE LIKE

[Zouxxyy]

Purpose

Support CREATE TABLE LIKE in Paimon Spark integration on Spark 3.4+.

Behavior:

• SparkCatalog: rewrite CREATE TABLE LIKE to the Paimon command, except STORED AS, which remains unsupported.
• If USING is omitted in SparkCatalog, inherit the source table provider.
• SparkGenericCatalog: rewrite only when USING paimon is specified; otherwise keep Spark native behavior.
• Copy source table comment and properties only when source and target providers match. If providers differ, keep only the comment and log a warning.

Tests

Updated/covered by:

• DDLTest
• DDLWithHiveCatalogTest
• PaimonFormatTableTest

[LinMingQiang]

Is it possible to support creating a new table from a branch?

[Zouxxyy]

This is supported now. I added a test to verify CREATE TABLE LIKE works with a branch source like source_tbl$branch_test_branch under SparkCatalog, and the target table is created from the branch metadata rather than the main table metadata.

[JingsongLi]

+1