Use BigQuery storage read API when reading external reading BigLake t…

…ables

The storage APIs support reading BigLake external tables (ie external
tables with a connection). But the current implementation uses views
which can be expensive, because it requires a query. This PR adds
support to read BigLake tables directly using the storage API.

There are no behavior changes for external tables and BQ native tables -
they use the view and storage APIs respectively.

Added a new test for BigLake tables.

Co-authored-by: Marcin Rusek <[email protected]>

.github/workflows/ci.yml

@@ -638,13 +638,15 @@ jobs:
           GCP_STORAGE_BUCKET: ${{ vars.GCP_STORAGE_BUCKET }}
           BIGQUERY_TESTING_PROJECT_ID: ${{ vars.BIGQUERY_TESTING_PROJECT_ID }}
           BIGQUERY_TESTING_PARENT_PROJECT_ID: ${{ vars.BIGQUERY_TESTING_PARENT_PROJECT_ID }}
+          BIGQUERY_TESTING_BIGLAKE_CONNECTION_ID: ${{ vars.BIGQUERY_TESTING_BIGLAKE_CONNECTION_ID }}
         if: matrix.modules == 'plugin/trino-bigquery' && !contains(matrix.profile, 'cloud-tests-2') && (env.CI_SKIP_SECRETS_PRESENCE_CHECKS != '' || env.BIGQUERY_CREDENTIALS_KEY != '')
         run: |
           $MAVEN test ${MAVEN_TEST} -pl :trino-bigquery -Pcloud-tests-1 \
             -Dbigquery.credentials-key="${BIGQUERY_CREDENTIALS_KEY}" \
             -Dtesting.gcp-storage-bucket="${GCP_STORAGE_BUCKET}" \
             -Dtesting.bigquery-project-id="${BIGQUERY_TESTING_PROJECT_ID}" \
-            -Dtesting.bigquery-parent-project-id="${BIGQUERY_TESTING_PARENT_PROJECT_ID}"
+            -Dtesting.bigquery-parent-project-id="${BIGQUERY_TESTING_PARENT_PROJECT_ID}" \
+            -Dtesting.bigquery-connection-id="${BIGQUERY_TESTING_BIGLAKE_CONNECTION_ID}"
       - name: Cloud BigQuery Smoke Tests
         id: tests-bq-smoke
         env:

plugin/trino-bigquery/README.md

@@ -22,9 +22,16 @@ You can follow the steps below to be able to run the integration tests locally.
   **BigQuery Admin** role assigned.
 * Get the base64 encoded text of the service account credentials file using `base64
   /path/to/service_account_credentials.json`.
+* Create a new BigQuery `CLOUD_RESOURCE` connection and grant the connection service account GCS permissions.
+  [Documentation](https://cloud.google.com/bigquery/docs/create-cloud-resource-connection).
+   * `bq mk --connection --location=us --project_id=$PROJECT_ID --connection_type=CLOUD_RESOURCE $CONNECTION_ID`
+   * Now we need to grant the new connection's service account the GCS permissions.
+   * To do this, run `bq show --connection $PROJECT_ID.us.$CONNECTION_ID`, which will display the service account ID.
+   * Grant the service account GCS Object Viewer permissions. e.g.: `gsutil iam ch serviceAccount:[email protected]:objectViewer gs://DESTINATION_BUCKET_NAME`
+
 * The `TestBigQueryWithDifferentProjectIdConnectorSmokeTest` requires an alternate project ID which is different from the
   project ID attached to the service account but the service account still has access to.
-* Set the VM options `bigquery.credentials-key`, `testing.gcp-storage-bucket`, and `testing.alternate-bq-project-id` in the IntelliJ "Run Configuration"
+* Set the VM options `bigquery.credentials-key`, `testing.gcp-storage-bucket`, `testing.alternate-bq-project-id`, and `testing.bigquery-connection-id` in the IntelliJ "Run Configuration"
   (or on the CLI if using Maven directly). It should look something like
-  `-Dbigquery.credentials-key=base64-text -Dtesting.gcp-storage-bucket=DESTINATION_BUCKET_NAME -Dtesting.alternate-bq-project-id=bigquery-cicd-alternate`.
+  `-Dbigquery.credentials-key=base64-text -Dtesting.gcp-storage-bucket=DESTINATION_BUCKET_NAME -Dtesting.alternate-bq-project-id=bigquery-cicd-alternate -Dtesting.bigquery-connection-id=my_project.us.connection-id`.
 * Run any test of your choice.

plugin/trino-bigquery/src/main/java/io/trino/plugin/bigquery/BigQueryMetadata.java

@@ -17,6 +17,7 @@
 import com.google.cloud.bigquery.BigQueryException;
 import com.google.cloud.bigquery.DatasetId;
 import com.google.cloud.bigquery.DatasetInfo;
+import com.google.cloud.bigquery.ExternalTableDefinition;
 import com.google.cloud.bigquery.Field;
 import com.google.cloud.bigquery.QueryJobConfiguration;
 import com.google.cloud.bigquery.QueryParameterValue;
@@ -118,6 +119,7 @@
 import static com.google.cloud.bigquery.storage.v1.WriteStream.Type.COMMITTED;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkState;
+import static com.google.common.base.Strings.isNullOrEmpty;
 import static com.google.common.base.Verify.verify;
 import static com.google.common.collect.ImmutableList.toImmutableList;
 import static com.google.common.collect.ImmutableMap.toImmutableMap;
@@ -340,7 +342,7 @@ public ConnectorTableHandle getTableHandle(ConnectorSession session, SchemaTable
             return null;
         }
 
-        boolean useStorageApi = useStorageApi(session, schemaTableName.getTableName(), tableInfo.get().getDefinition().getType());
+        boolean useStorageApi = useStorageApi(session, schemaTableName.getTableName(), tableInfo.get().getDefinition());
         ImmutableList.Builder<BigQueryColumnHandle> columns = ImmutableList.builder();
         columns.addAll(client.buildColumnHandles(tableInfo.get(), useStorageApi));
         Optional<BigQueryPartitionType> partitionType = getPartitionType(tableInfo.get().getDefinition());
@@ -360,14 +362,15 @@ public ConnectorTableHandle getTableHandle(ConnectorSession session, SchemaTable
                 .withProjectedColumns(columns.build());
     }
 
-    private static boolean useStorageApi(ConnectorSession session, String tableName, TableDefinition.Type type)
+    private static boolean useStorageApi(ConnectorSession session, String tableName, TableDefinition tableDefinition)
     {
+        TableDefinition.Type type = tableDefinition.getType();
         if (isWildcardTable(type, tableName)) {
             // Storage API doesn't support reading wildcard tables
             return false;
         }
-        if (type == EXTERNAL) {
-            // Storage API doesn't support reading external tables
+        if (type == EXTERNAL && !isBigLakeTable(tableDefinition)) {
+            // Storage API doesn't support reading external tables except BigLake tables
             return false;
         }
         if ((type == VIEW || type == MATERIALIZED_VIEW) && isSkipViewMaterialization(session)) {
@@ -376,6 +379,18 @@ private static boolean useStorageApi(ConnectorSession session, String tableName,
         return true;
     }
 
+    private static boolean isBigLakeTable(TableDefinition tableDefinition)
+    {
+        if (tableDefinition instanceof ExternalTableDefinition externalTableDefinition) {
+            //BigLake tables are external with connectionId and don't have objectMetadata
+            List<String> sourceUris = externalTableDefinition.getSourceUris();
+            return !isNullOrEmpty(externalTableDefinition.getConnectionId()) &&
+                   isNullOrEmpty(externalTableDefinition.getObjectMetadata()) &&
+                   (sourceUris != null && sourceUris.stream().allMatch(uri -> uri.startsWith("gs://")));
+        }
+        return false;
+    }
+
     private Optional<TableInfo> getTableInfoIgnoringConflicts(ConnectorSession session, SchemaTableName schemaTableName)
     {
         BigQueryClient client = bigQueryClientFactory.create(session);
@@ -470,7 +485,7 @@ public Map<SchemaTableName, List<ColumnMetadata>> listTableColumns(ConnectorSess
         return tableInfos.stream()
                 .collect(toImmutableMap(
                         table -> new SchemaTableName(table.getTableId().getDataset(), table.getTableId().getTable()),
-                        table -> client.buildColumnHandles(table, useStorageApi(session, table.getTableId().getTable(), table.getDefinition().getType())).stream()
+                        table -> client.buildColumnHandles(table, useStorageApi(session, table.getTableId().getTable(), table.getDefinition())).stream()
                                 .map(BigQueryColumnHandle::getColumnMetadata)
                                 .collect(toImmutableList())));
     }

plugin/trino-bigquery/src/main/java/io/trino/plugin/bigquery/ReadSessionCreator.java

@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.Optional;
 
+import static com.google.cloud.bigquery.TableDefinition.Type.EXTERNAL;
 import static com.google.cloud.bigquery.TableDefinition.Type.MATERIALIZED_VIEW;
 import static com.google.cloud.bigquery.TableDefinition.Type.SNAPSHOT;
 import static com.google.cloud.bigquery.TableDefinition.Type.TABLE;
@@ -140,7 +141,7 @@ private TableInfo getActualTable(
     {
         TableDefinition tableDefinition = remoteTable.getDefinition();
         TableDefinition.Type tableType = tableDefinition.getType();
-        if (tableType == TABLE || tableType == SNAPSHOT) {
+        if (tableType == TABLE || tableType == SNAPSHOT || tableType == EXTERNAL) {
             return remoteTable;
         }
         if (tableType == VIEW || tableType == MATERIALIZED_VIEW) {
@@ -152,7 +153,7 @@ private TableInfo getActualTable(
             // get it from the view
             return client.getCachedTable(viewExpiration, remoteTable, requiredColumns, filter);
         }
-        // Storage API doesn't support reading other table types (materialized views, external)
+        // Storage API doesn't support reading other table types (materialized views, external except BigLake tables)
         throw new TrinoException(NOT_SUPPORTED, format("Table type '%s' of table '%s.%s' is not supported",
                 tableType, remoteTable.getTableId().getDataset(), remoteTable.getTableId().getTable()));
     }

plugin/trino-bigquery/src/test/java/io/trino/plugin/bigquery/BaseBigQueryConnectorTest.java

@@ -42,6 +42,7 @@
 
 import static com.google.common.base.Strings.nullToEmpty;
 import static com.google.common.collect.ImmutableMultiset.toImmutableMultiset;
+import static com.google.common.collect.MoreCollectors.onlyElement;
 import static io.trino.plugin.bigquery.BigQueryQueryRunner.BigQuerySqlExecutor;
 import static io.trino.plugin.bigquery.BigQueryQueryRunner.TEST_SCHEMA;
 import static io.trino.spi.connector.ConnectorMetadata.MODIFYING_ROWS_MESSAGE;
@@ -66,13 +67,15 @@ public abstract class BaseBigQueryConnectorTest
 {
     protected BigQuerySqlExecutor bigQuerySqlExecutor;
     private String gcpStorageBucket;
+    private String bigQueryConnectionId;
 
     @BeforeAll
     public void initBigQueryExecutor()
     {
         this.bigQuerySqlExecutor = new BigQuerySqlExecutor();
         // Prerequisite: upload region.csv in resources directory to gs://{testing.gcp-storage-bucket}/tpch/tiny/region.csv
         this.gcpStorageBucket = requiredNonEmptySystemProperty("testing.gcp-storage-bucket");
+        this.bigQueryConnectionId = requiredNonEmptySystemProperty("testing.bigquery-connection-id");
     }
 
     @Override
@@ -761,12 +764,73 @@ public void testBigQueryExternalTable()
 
             assertUpdate("DROP TABLE test." + externalTable);
             assertQueryReturnsEmptyResult("SELECT * FROM information_schema.tables WHERE table_schema = 'test' AND table_name = '" + externalTable + "'");
+
+            assertThat(getTableReferenceCountInJob(externalTable)).isEqualTo(1);
         }
         finally {
             onBigQuery("DROP EXTERNAL TABLE IF EXISTS test." + externalTable);
         }
     }
 
+    @Test
+    public void testBigLakeExternalTable()
+    {
+        String biglakeExternalTable = "test_biglake_external" + randomNameSuffix();
+        try {
+            onBigQuery("CREATE EXTERNAL TABLE test." + biglakeExternalTable +
+                    " WITH CONNECTION `" + bigQueryConnectionId + "`" +
+                    " OPTIONS (format = 'CSV', uris = ['gs://" + gcpStorageBucket + "/tpch/tiny/region.csv'])");
+            assertQuery("SELECT table_type FROM information_schema.tables WHERE table_schema = 'test' AND table_name = '" + biglakeExternalTable + "'", "VALUES 'BASE TABLE'");
+
+            assertThat(query("DESCRIBE test." + biglakeExternalTable)).matches("DESCRIBE tpch.region");
+            assertThat(query("SELECT * FROM test." + biglakeExternalTable)).matches("SELECT * FROM tpch.region");
+
+            assertUpdate("DROP TABLE test." + biglakeExternalTable);
+            assertQueryReturnsEmptyResult("SELECT * FROM information_schema.tables WHERE table_schema = 'test' AND table_name = '" + biglakeExternalTable + "'");
+
+            // BigLake tables should not run queries, since they are read directly using the storage read API.
+            assertThat(getTableReferenceCountInJob(biglakeExternalTable)).isEqualTo(0);
+        }
+        finally {
+            onBigQuery("DROP EXTERNAL TABLE IF EXISTS test." + biglakeExternalTable);
+        }
+    }
+
+    @Test
+    public void testExternalObjectTable()
+    {
+        String objectExternalTable = "test_object_external" + randomNameSuffix();
+
+        try {
+            onBigQuery("CREATE EXTERNAL TABLE test." + objectExternalTable +
+                       " WITH CONNECTION `" + bigQueryConnectionId + "`" +
+                       " OPTIONS (object_metadata = 'SIMPLE', uris = ['gs://" + gcpStorageBucket + "/tpch/tiny/region.csv'])");
+            assertQuery("SELECT table_type FROM information_schema.tables WHERE table_schema = 'test' AND table_name = '" + objectExternalTable + "'", "VALUES 'BASE TABLE'");
+
+            assertThat(query("SELECT uri FROM test." + objectExternalTable)).succeeds();
+
+            assertUpdate("DROP TABLE test." + objectExternalTable);
+            assertQueryReturnsEmptyResult("SELECT * FROM information_schema.tables WHERE table_schema = 'test' AND table_name LIKE '%" + objectExternalTable + "%'");
+
+            // BigLake tables should not run queries, since they are read directly using the storage read API.
+            assertThat(getTableReferenceCountInJob(objectExternalTable)).isEqualTo(1);
+        }
+        finally {
+            onBigQuery("DROP EXTERNAL TABLE IF EXISTS test." + objectExternalTable);
+        }
+    }
+
+    private long getTableReferenceCountInJob(String tableName)
+    {
+        return bigQuerySqlExecutor.executeQuery("""
+                         SELECT count(*) FROM region-us.INFORMATION_SCHEMA.JOBS WHERE EXISTS(
+                             SELECT * FROM UNNEST(referenced_tables) AS referenced_table
+                                 WHERE referenced_table.table_id = '%s')
+                        """.formatted(tableName)).streamValues()
+                .map(fieldValues -> fieldValues.getFirst().getLongValue())
+                .collect(onlyElement());
+    }
+
     @Test
     public void testQueryLabeling()
     {