GrigorievNick opened a new issue #1202:
URL: https://github.com/apache/iceberg/issues/1202


   Hi, 
   I have a question >
   Do Spark Iceberg Implement Copy On Write Delete and Update?
   * I find [this MR](https://github.com/apache/iceberg/pull/351), so Iceberg 
itself supports it. 
     But what about implementation in spark? 
     Looking on [this 
code](https://github.com/apache/iceberg/blob/master/spark3/src/main/java/org/apache/iceberg/spark/source/SparkWriteBuilder.java#L87)
 I can say that at least Spark 3 supports it, am I right? 
    * But looking to spark the only usage of this builder method is in delete 
sections of 
org.apache.spark.sql.execution.datasources.v2.OverwriteByExpressionExecV1 and 
OverwriteByExpression.
    * So does it possible to implement Eager(CopyOnWriteUpdate) or there is 
some known issues?
   
   Do Spark 2 Iceberg Implement Copy On Write Delete and Update?


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