amogh-jahagirdar commented on code in PR #13310:
URL: https://github.com/apache/iceberg/pull/13310#discussion_r2198395943
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spark/v4.0/spark/src/main/java/org/apache/iceberg/spark/source/SparkPositionDeltaWrite.java:
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@@ -426,17 +428,35 @@ public DeltaWriter<InternalRow> createWriter(int
partitionId, long taskId) {
.writeProperties(writeProperties)
.build();
+ Function<InternalRow, InternalRow> rowLineageProjector =
+ context.dataSchema() != null
+ &&
context.dataSchema().findField(MetadataColumns.ROW_ID.fieldId()) != null
+ ? new ProjectRowLineageFromMetadata()
Review Comment:
To be more specific how context.dataSchema() ends up being null it's
basically that the logical write info handed to us from Spark just hasn't
determined the schema yet at some early points in analysis,
https://github.com/apache/iceberg/blame/main/spark/v4.0/spark/src/main/java/org/apache/iceberg/spark/source/SparkPositionDeltaWriteBuilder.java#L90
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