Hi Nikolay, Can you please take a look at this thread on SO? https://stackoverflow.com/questions/51621280/saving-a-spark-dataset-to-apache-ignite-with-array-column-and-savemode-overwrite
Looks like org.apache.ignite.spark.impl.QueryUtils#dataType method should also support ArrayType as one of the cases. Currently it doesn't and throws an exception. Is it a bug? -Val
