Hi, I know this issue is resolved for reading from json, and tested for that use case, but I'm seeing the exact same error message when writing to json.
java.io.InvalidClassException: org.apache.commons.lang3.time.FastDateParser; local class incompatible: stream classdesc serialVersionUID = 2, local class serialVersionUID = 3 Easy to reproduce on AWS (also happens writing to HDFS) val dfyo = List((1,"hi"),(2,"there"),(3,"yo")) .toDF() .write .json(f"s3n://ReplaceWithBucketName/test/") I know writing to json is not a common use case, so not an urgent issue. I see the git commit looks like it is mostly replacing the import of -import org.apache.commons.lang3.StringUtils; +import org.apache.commons.lang.StringUtils; But the issue is with org.apache.commons.lang3.time.FastDateParser I had a quick search in the codebase and couldn't find any imports of that class directly or indirectly so I'm not really sure what would fix it. -- View this message in context: http://apache-zeppelin-users-incubating-mailing-list.75479.x6.nabble.com/InvalidClassException-using-Zeppelin-master-and-spark-2-1-on-a-standalone-spark-cluster-tp4900p5854.html Sent from the Apache Zeppelin Users (incubating) mailing list mailing list archive at Nabble.com.