iting0321 commented on code in PR #3820:
URL: https://github.com/apache/polaris/pull/3820#discussion_r3256552015


##########
plugins/spark/v3.5/spark/src/main/java/org/apache/polaris/spark/SparkCatalog.java:
##########
@@ -135,16 +145,42 @@ public void initialize(String name, 
CaseInsensitiveStringMap options) {
     initRESTCatalog(name, options);
     this.deltaHelper = new DeltaHelper(options);
     this.hudiHelper = new HudiHelper(options);
-    this.paimonHelper = new PaimonHelper(options);
+    this.paimonHelper = new PaimonHelper(name, options);
   }
 
   @Override
   public Table loadTable(Identifier ident) throws NoSuchTableException {
+    // First, try to load as an Iceberg table
     try {
       return this.icebergsSparkCatalog.loadTable(ident);
     } catch (NoSuchTableException e) {
-      return this.polarisSparkCatalog.loadTable(ident);
+      // Not an Iceberg table, fall through to handle as generic table
     }
+
+    // For generic tables, check the format/provider to decide delegation
+    // Use getTableFormat to avoid triggering Spark DataSource resolution for 
routing decisions
+    String provider = this.polarisSparkCatalog.getTableFormat(ident);
+
+    // Delegate to the appropriate catalog based on the provider
+    if (PolarisCatalogUtils.usePaimon(provider)) {
+      try {
+        // For Paimon tables, use Paimon's SparkCatalog to load the table
+        // This ensures proper handling of Paimon's metadata and schema files
+        TableCatalog paimonCatalog = paimonHelper.loadPaimonCatalog();
+        return paimonCatalog.loadTable(ident);

Review Comment:
   Hi @dimas-b, I just deleted the integration test and update the PR title and 
description. Looking forward to your feedback!



##########
plugins/spark/v3.5/spark/src/main/java/org/apache/polaris/spark/SparkCatalog.java:
##########
@@ -135,16 +145,42 @@ public void initialize(String name, 
CaseInsensitiveStringMap options) {
     initRESTCatalog(name, options);
     this.deltaHelper = new DeltaHelper(options);
     this.hudiHelper = new HudiHelper(options);
-    this.paimonHelper = new PaimonHelper(options);
+    this.paimonHelper = new PaimonHelper(name, options);
   }
 
   @Override
   public Table loadTable(Identifier ident) throws NoSuchTableException {
+    // First, try to load as an Iceberg table
     try {
       return this.icebergsSparkCatalog.loadTable(ident);
     } catch (NoSuchTableException e) {
-      return this.polarisSparkCatalog.loadTable(ident);
+      // Not an Iceberg table, fall through to handle as generic table
     }
+
+    // For generic tables, check the format/provider to decide delegation
+    // Use getTableFormat to avoid triggering Spark DataSource resolution for 
routing decisions
+    String provider = this.polarisSparkCatalog.getTableFormat(ident);
+
+    // Delegate to the appropriate catalog based on the provider
+    if (PolarisCatalogUtils.usePaimon(provider)) {
+      try {
+        // For Paimon tables, use Paimon's SparkCatalog to load the table
+        // This ensures proper handling of Paimon's metadata and schema files
+        TableCatalog paimonCatalog = paimonHelper.loadPaimonCatalog();
+        return paimonCatalog.loadTable(ident);

Review Comment:
   Hi @dimas-b, I just deleted the integration test and updated the PR title 
and description. Looking forward to your feedback!



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