amogh-jahagirdar commented on code in PR #13310:
URL: https://github.com/apache/iceberg/pull/13310#discussion_r2151310129
##########
spark/v4.0/spark/src/main/java/org/apache/iceberg/spark/source/SparkWrite.java:
##########
@@ -699,29 +706,83 @@ public DataWriter<InternalRow> createWriter(int
partitionId, long taskId, long e
writeSchema,
dsSchema,
targetFileSize,
- useFanoutWriter);
+ useFanoutWriter,
+ persistLineageFields);
}
}
}
- private static class UnpartitionedDataWriter implements
DataWriter<InternalRow> {
+ private abstract static class DataWriterWithLineage implements
DataWriter<InternalRow> {
+ private Integer rowIdOrdinal = null;
+ private Integer lastUpdatedOrdinal = null;
+
+ protected InternalRow lineageRow(InternalRow meta) {
+ GenericInternalRow row = new GenericInternalRow(2);
+ row.setNullAt(0);
+ row.setNullAt(1);
+
+ if (meta == null) {
+ return row;
+ }
+
+ // Ordinals are cached
+ if (rowIdOrdinal != null && lastUpdatedOrdinal != null) {
+ setIfNotNull(row, 0, meta, rowIdOrdinal);
+ setIfNotNull(row, 1, meta, lastUpdatedOrdinal);
Review Comment:
Ok I think the right thing to do is pass through a `Function<InternalRow,
InternalRow> rowLineageExtractor` to the writers and then we can have a common
implementation of that function across CoW/MoR writers.
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