[cherry-pick](branch-3.0)[Bug] test suite test_table_options may caus…

…e NPE in FE (#39509)(#39742)



backport #39509

fe/fe-core/src/main/java/org/apache/doris/tablefunction/MetadataGenerator.java

@@ -1135,6 +1135,15 @@ private static TFetchSchemaTableDataResult tableOptionsMetadataResult(TSchemaTab
         String clg = params.getCatalog();
         CatalogIf catalog = Env.getCurrentEnv().getCatalogMgr().getCatalog(clg);
         DatabaseIf database = catalog.getDbNullable(dbId);
+        if (database == null) {
+            // BE gets the database id list from FE and then invokes this interface
+            // per database. there is a chance that in between database can be dropped.
+            // so need to handle database not exist case and return ok so that BE continue the
+            // loop with next database.
+            result.setDataBatch(dataBatch);
+            result.setStatus(new TStatus(TStatusCode.OK));
+            return result;
+        }
         List<TableIf> tables = database.getTables();
         if (catalog instanceof InternalCatalog) {
             tableOptionsForInternalCatalog(currentUserIdentity, catalog, database, tables, dataBatch);
@@ -1222,6 +1231,15 @@ private static TFetchSchemaTableDataResult tablePropertiesMetadataResult(TSchema
         CatalogIf catalog = Env.getCurrentEnv().getCatalogMgr().getCatalog(clg);
         List<TRow> dataBatch = Lists.newArrayList();
         DatabaseIf database = catalog.getDbNullable(dbId);
+        if (database == null) {
+            // BE gets the database id list from FE and then invokes this interface
+            // per database. there is a chance that in between database can be dropped.
+            // so need to handle database not exist case and return ok so that BE continue the
+            // loop with next database.
+            result.setDataBatch(dataBatch);
+            result.setStatus(new TStatus(TStatusCode.OK));
+            return result;
+        }
         List<TableIf> tables = database.getTables();
         if (catalog instanceof InternalCatalog) {
             tablePropertiesForInternalCatalog(currentUserIdentity, catalog, database, tables, dataBatch);