Hello Gang, I'm reviewing some Maven POM files in the Hive project and I came across an interesting issue.
The druid-handler project is shading an artifact called 'org.roaringbitmap' 'shims' '0.7.36' https://github.com/apache/hive/blob/master/druid-handler/pom.xml#L336 Well, this 'shims' JAR file was compiled using Java 11. https://search.maven.org/artifact/org.roaringbitmap/shims/0.7.36/jar However, the Hive project is currently at Java 1.8 (I know there are plans for upgrading soon). So, as things stand right now, the druid-handler library is shading in a Java 11 class, thereby making it required to run Java 11 to use the druid-handler even though the Hive project itself is using Java 1.8. I noticed this because the shade plugin I am currently testing with was failing to shade because of this discrepancy. I think as an immediate workaround, we should not be shading and that this library needs to be provided. It is a transient dependency of druid-processing (which itself is marked optional). https://github.com/apache/hive/blob/master/druid-handler/pom.xml#L114 I don't think we should be shading druid or any of its dependencies until the Hive project is using JDK 11. Anyone have any thoughts here?
