New JAR conflicts with old JAR
We updated one of our jars with a new version using the databricks UI.
I detached and deleted the old jar. Created a new cluster and uploaded and attached the new jar.
However I am getting versions conflict since the old versions of the jar is still added to the classpath, and idea how to solve this?
Still experiencing the same issue. @Kyle is this supposed to have been fixed in previous releases?
Best Answer
Try deleting all old jars in "dbfs://FileStore/jars/
I had the same issue. Based on what I learned from my colleague, this is an open issue with Databricks. Here is what I did (partly based on his advise) to get around it. Not pretty but seems to work:
1) delete the old JAR file.
2) remove the cached JAR per Kyle's advice above - snippet from Scala notebook to do this.
val jarfiles = dbutils.fs.ls("dbfs:/FileStore/jars")
.map(_.path)
.filter(_.indexOf("your pattern") > -1)
jarfiles.foreach(dbutils.fs.rm(_))
3) detach notebook from cluster.
4) restart cluster.
5) add the jar back and attach the jar to the cluster.
6) re-attach notebook to cluster.
Its a painful process, and leads me to think that the pattern of depending on a JAR file under active development is discouraged in this workflow. I should probably have set up my tests on a local Spark cluster instead of debugging it here, would have gone much faster.
@sujitpal- thanks for the update. This actually helped us recreate the issue. We will be fixing this in one of the next couple releases.
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