rdblue commented on a change in pull request #1346:
URL: https://github.com/apache/iceberg/pull/1346#discussion_r476929916
##########
File path: flink/src/main/java/org/apache/iceberg/flink/FlinkSchemaUtil.java
##########
@@ -98,4 +101,26 @@ public static TableSchema toSchema(RowType rowType) {
}
return builder.build();
}
+
+ /**
+ * Project columns from a {@link Schema} using a projected fields.
+ *
+ * @param schema a Schema
+ * @param projectedFields projected fields from Flink
+ * @return a Schema corresponding to the Flink projection
+ */
+ public static Schema projectWithReordering(Schema schema, List<String>
projectedFields) {
Review comment:
We do this in Spark here:
https://github.com/apache/iceberg/blob/master/spark/src/main/java/org/apache/iceberg/spark/SparkSchemaUtil.java#L161-L166
You might try a similar approach since we already have Flink to Iceberg
conversion. It should just be a matter of reassigning the IDs. You may also
need the type fixes, I don't recall if Iceberg to Flink to Iceberg conversion
is lossy or not.
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