ihji commented on code in PR #17418:
URL: https://github.com/apache/beam/pull/17418#discussion_r858163647
##########
sdks/java/extensions/python/src/main/java/org/apache/beam/sdk/extensions/python/ExternalPythonTransform.java:
##########
@@ -268,20 +268,31 @@ public OutputT expand(InputT input) {
Row argsRow = buildOrGetArgsRow();
Row kwargsRow = buildOrGetKwargsRow();
try {
- Schema payloadSchema =
- Schema.of(
- Schema.Field.of("constructor", Schema.FieldType.STRING),
- Schema.Field.of("args",
Schema.FieldType.row(argsRow.getSchema())),
- Schema.Field.of("kwargs",
Schema.FieldType.row(kwargsRow.getSchema())));
+ Schema.Builder schemaBuilder = Schema.builder();
+ schemaBuilder.addStringField("constructor");
+ if (argsRow.getValues().size() > 0) {
+ schemaBuilder.addRowField("args", argsRow.getSchema());
+ }
+ if (kwargsRow.getValues().size() > 0) {
+ schemaBuilder.addRowField("kwargs", kwargsRow.getSchema());
+ }
+ Schema payloadSchema = schemaBuilder.build();
payloadSchema.setUUID(UUID.randomUUID());
- Row payloadRow =
- Row.withSchema(payloadSchema).addValues(fullyQualifiedName, argsRow,
kwargsRow).build();
+ Row.Builder payloadRowBuilder = Row.withSchema(payloadSchema);
+ payloadRowBuilder.addValue(fullyQualifiedName);
+ if (argsRow.getValues().size() > 0) {
Review Comment:
Done.
##########
sdks/java/extensions/python/src/main/java/org/apache/beam/sdk/extensions/python/ExternalPythonTransform.java:
##########
@@ -65,8 +66,10 @@
private @Nullable Object @NonNull [] argsArray;
private @Nullable Row providedKwargsRow;
- private ExternalPythonTransform(String fullyQualifiedName, int
expansionPort) {
+ private ExternalPythonTransform(
+ String fullyQualifiedName, String expansionHost, int expansionPort) {
Review Comment:
Done.
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