chamikaramj commented on code in PR #24344:
URL: https://github.com/apache/beam/pull/24344#discussion_r1030932543
##########
sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/transforms/TypedSchemaTransformProvider.java:
##########
@@ -61,7 +63,13 @@ Optional<List<String>> dependencies(ConfigT configuration,
PipelineOptions optio
@Override
public final Schema configurationSchema() {
try {
- return SchemaRegistry.createDefault().getSchema(configurationClass());
+ Schema schema =
SchemaRegistry.createDefault().getSchema(configurationClass());
+
+ // Sort the fields by name to ensure a consistent schema is produced
+ Schema sortedSchema = schema.getFields().stream()
+ .sorted(Comparator.comparing(Field::getName))
+ .collect(Schema.toSchema());
Review Comment:
Can we also add unit tests ?
##########
sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/transforms/TypedSchemaTransformProvider.java:
##########
@@ -61,7 +63,13 @@ Optional<List<String>> dependencies(ConfigT configuration,
PipelineOptions optio
@Override
public final Schema configurationSchema() {
try {
- return SchemaRegistry.createDefault().getSchema(configurationClass());
+ Schema schema =
SchemaRegistry.createDefault().getSchema(configurationClass());
+
+ // Sort the fields by name to ensure a consistent schema is produced
+ Schema sortedSchema = schema.getFields().stream()
Review Comment:
We should also preserve other fields of the Schema, for example, id,
options, encoding_positions_set (and any future fields).
https://github.com/apache/beam/blob/master/model/pipeline/src/main/proto/org/apache/beam/model/pipeline/v1/schema.proto#L40
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