nleena123 commented on issue #5539:
URL: https://github.com/apache/hudi/issues/5539#issuecomment-1122307710
we are adding the new field in hudi code with the below code
**Schema.Field f = new Schema.Field(CDC_TS,
Schema.createUnion(optionalString), CDC_TS, "null");**
static GenericRecord getDataWithCDC_TS(GenericRecord record, String ts) {
Schema base = record.getSchema();
List<Schema.Field> baseFields = base.getFields().stream()
.map(field -> {
Schema.Field f = new
Schema.Field(field.name(), field.schema(), field.doc(), field.defaultVal());
field.aliases().forEach(f::addAlias);
return f;
})
.collect(Collectors.toList());
List<Schema.Field> newFields = new ArrayList<>(baseFields);
ArrayList<Schema> optionalString = new ArrayList<>();
optionalString.add(Schema.create(Schema.Type.NULL));
optionalString.add(Schema.create(Schema.Type.STRING));
Schema.Field f = new Schema.Field(CDC_TS,
Schema.createUnion(optionalString), CDC_TS, "null");
if (!baseFields.contains(f))
newFields.add(f);
Schema newSchema = Schema.createRecord(
base.getName(),
"New schema by adding a new field,CDC_TS",
base.getNamespace(), base.isError(),
newFields);
GenericRecord newRecord = new GenericData.Record(newSchema);
base.getFields().stream().forEach(field ->
newRecord.put(field.name(), record.get(field.name())));
newRecord.put(CDC_TS, ts);
return newRecord;
}
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