jackye1995 commented on code in PR #7050:
URL: https://github.com/apache/iceberg/pull/7050#discussion_r1133037748


##########
spark/v3.3/spark/src/main/java/org/apache/iceberg/spark/Spark3Util.java:
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@@ -937,6 +938,28 @@ public static 
org.apache.spark.sql.catalyst.TableIdentifier toV1TableIdentifier(
     return org.apache.spark.sql.catalyst.TableIdentifier.apply(table, 
database);
   }
 
+  public static String determineWriteBranch(

Review Comment:
   This method can technically be embedded in `SparkWriteConf.branch()`. If we 
do that, we can also remove `SparkWriteConf.wapBranch()`. The only issue is 
that it will compute `wapId` and `wapEnabled` twice, once in the method, once 
in `SparkWrite`/`SparkPositionDeltaWrite`. Please let me know if there is any 
preference for code cleanness vs computation.



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