Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/2209
@rmetzger I have reworked the `pom.xml` again. Now the JAR is as clean as
possible. All unneccessary files are filtered out. Most of the other
dependencies (`com.google`, `com.fasterxml.jackson`) are relocated.
I could not relocate `org.slf4j` because that would lead to a warning
during runtime. Relocating Calcite leads to weird Scala compiler problems, but
I think no one wants to use a custom Caclite version.
I have introduced a global scala maven plugin version for all scala modules.
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