RussellSpitzer commented on issue #1894:
URL: https://github.com/apache/iceberg/issues/1894#issuecomment-774307653
And here is a example
```scala
scala> spark.sql("CREATE table ice.default.part (x Int, y Int) USING iceberg
partitioned by (x) location '/Users/russellspitzer/Temp/iceberg_table'");
val df =
spark.createDataFrame(Seq((1,1),(1,2),(1,3),(2,1),(2,2),(2,3),(3,1),(3,2),(3,3))).toDF("x","y")
scala>
df.write.format("iceberg").partitionBy("x").mode("overwrite").saveAsTable("ice.default.part")
// No Error
scala>
df.write.format("iceberg").partitionBy("y").mode("overwrite").saveAsTable("ice.default.part")
// Many errors
// Caused by: java.lang.IllegalStateException: Already closed files for
partition: y=1
```
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