Spark: Added ability to add uuid suffix to the table location in Hive catalog

hive-metastore/src/main/java/org/apache/iceberg/hive/HiveCatalog.java

@@ -22,6 +22,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.UUID;
 import java.util.stream.Collectors;
 import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
@@ -54,17 +55,22 @@
 import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList;
 import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
 import org.apache.iceberg.relocated.com.google.common.collect.Maps;
+import org.apache.iceberg.util.PropertyUtil;
 import org.apache.thrift.TException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public class HiveCatalog extends BaseMetastoreCatalog implements SupportsNamespaces, Configurable {
   private static final Logger LOG = LoggerFactory.getLogger(HiveCatalog.class);
 
+  public static final String APPEND_UUID_SUFFIX_TO_TABLE_LOCATION = "append-uuid-suffix-to-table-location";
+  public static final boolean APPEND_UUID_SUFFIX_TO_TABLE_LOCATION_DEFAULT = false;
+
   private String name;
   private Configuration conf;
   private FileIO fileIO;
   private ClientPool<HiveMetaStoreClient, TException> clients;
+  private boolean useUniqueTableName;
 
   public HiveCatalog() {
   }
@@ -107,6 +113,10 @@ public void initialize(String inputName, Map<String, String> properties) {
     this.fileIO = fileIOImpl == null ? new HadoopFileIO(conf) : CatalogUtil.loadFileIO(fileIOImpl, properties, conf);
 
     this.clients = new CachedClientPool(conf, properties);
+    if (properties.containsKey(APPEND_UUID_SUFFIX_TO_TABLE_LOCATION)) {
+      this.useUniqueTableName = PropertyUtil.propertyAsBoolean(properties,
+              APPEND_UUID_SUFFIX_TO_TABLE_LOCATION, APPEND_UUID_SUFFIX_TO_TABLE_LOCATION_DEFAULT);
+    }
   }
 
   @Override
@@ -438,7 +448,7 @@ protected String defaultWarehouseLocation(TableIdentifier tableIdentifier) {
       Database databaseData = clients.run(client -> client.getDatabase(tableIdentifier.namespace().levels()[0]));
       if (databaseData.getLocationUri() != null) {
         // If the database location is set use it as a base.
-        return String.format("%s/%s", databaseData.getLocationUri(), tableIdentifier.name());
+        return String.format("%s/%s", databaseData.getLocationUri(), getTableName(tableIdentifier));
       }
 
     } catch (TException e) {
@@ -455,7 +465,7 @@ protected String defaultWarehouseLocation(TableIdentifier tableIdentifier) {
         "%s/%s.db/%s",
         warehouseLocation,
         tableIdentifier.namespace().levels()[0],
-        tableIdentifier.name());
+        getTableName(tableIdentifier));
   }
 
   private String getWarehouseLocation() {
@@ -464,6 +474,14 @@ private String getWarehouseLocation() {
     return warehouseLocation;
   }
 
+  private String getTableName(TableIdentifier tableIdentifier) {
+    if (useUniqueTableName) {
+      return String.format("%s-%s", tableIdentifier.name(), UUID.randomUUID());
+    } else {
+      return tableIdentifier.name();
+    }
+  }
+
   private Map<String, String> convertToMetadata(Database database) {
 
     Map<String, String> meta = Maps.newHashMap();

spark3/src/test/java/org/apache/iceberg/spark/SparkCatalogTestBase.java

@@ -27,6 +27,7 @@
 import org.apache.iceberg.catalog.SupportsNamespaces;
 import org.apache.iceberg.catalog.TableIdentifier;
 import org.apache.iceberg.hadoop.HadoopCatalog;
+import org.apache.iceberg.hive.HiveCatalog;
 import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
 import org.junit.AfterClass;
 import org.junit.Assert;
@@ -71,6 +72,12 @@ public static Object[][] parameters() {
             "default-namespace", "default",
             "parquet-enabled", "true",
             "cache-enabled", "false" // Spark will delete tables using v1, leaving the cache out of sync
+        ) },
+        { "spark_catalog_with_unique_location", SparkCatalog.class.getName(),
+           ImmutableMap.of(
+            "type", "hive",
+            "default-namespace", "default",
+            HiveCatalog.APPEND_UUID_SUFFIX_TO_TABLE_LOCATION, "true"
         ) }
     };
   }

spark3/src/test/java/org/apache/iceberg/spark/sql/TestCreateTable.java

@@ -29,6 +29,7 @@
 import org.apache.iceberg.TableOperations;
 import org.apache.iceberg.TableProperties;
 import org.apache.iceberg.hadoop.HadoopCatalog;
+import org.apache.iceberg.hive.HiveCatalog;
 import org.apache.iceberg.spark.SparkCatalogTestBase;
 import org.apache.iceberg.types.Types;
 import org.apache.iceberg.types.Types.NestedField;
@@ -40,8 +41,14 @@
 import org.junit.Test;
 
 public class TestCreateTable extends SparkCatalogTestBase {
+  private boolean shouldHaveUniqueTableLocation;
+
   public TestCreateTable(String catalogName, String implementation, Map<String, String> config) {
     super(catalogName, implementation, config);
+
+    if ("true".equals(config.get(HiveCatalog.APPEND_UUID_SUFFIX_TO_TABLE_LOCATION))) {
+      this.shouldHaveUniqueTableLocation = true;
+    }
   }
 
   @After
@@ -279,4 +286,24 @@ public void testDowngradeTableToFormatV1ThroughTablePropertyFails() {
         "Cannot downgrade v2 table to v1",
         () -> sql("ALTER TABLE %s SET TBLPROPERTIES ('format-version'='1')", tableName));
   }
+
+  @Test
+  public void testCreateTableWithUniqueLocation() {
+    Assert.assertFalse("Table should not already exist", validationCatalog.tableExists(tableIdent));
+    sql("CREATE TABLE %s (id BIGINT NOT NULL, data STRING) USING iceberg", tableName);
+
+    Table table = validationCatalog.loadTable(tableIdent);
+    Assert.assertNotNull("Should load the new table", table);
+
+    String location = table.location();
+    if (shouldHaveUniqueTableLocation) {
+      String tableNameWithUuidSuffix = ".*[0-9a-f]{8}\\b-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-\\b[0-9a-f]{12}";
+      Assert.assertTrue(
+              "Should have uuid suffix in table name",
+              location.matches(tableNameWithUuidSuffix));
+    } else {
+      Assert.assertTrue("Should end with table name ",
+              location.endsWith(tableIdent.name()));
+    }
+  }
 }