add comment

apache · Dec 18, 2024 · 984673d · 984673d
1 parent 1e1fe85
commit 984673d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/...g/apache/beam/sdk/io/gcp/bigquery/providers/BigQueryFileLoadsSchemaTransformProvider.java b/...g/apache/beam/sdk/io/gcp/bigquery/providers/BigQueryFileLoadsSchemaTransformProvider.java
@@ -108,6 +108,7 @@ BigQueryIO.Write<Row> toWrite(Schema schema, PipelineOptions options) {
               .withCustomGcsTempLocation(
                   ValueProvider.StaticValueProvider.of(options.getTempLocation()))
               .withWriteDisposition(WriteDisposition.WRITE_APPEND)
+              // Use Avro format for better performance. Don't change this unless it's for a good reason.
               .withAvroFormatFunction(dynamicDestinations.getAvroFilterFormatFunction(false));
 
       if (!Strings.isNullOrEmpty(configuration.getCreateDisposition())) {