[FLINK-8567] Maven-shade-plugin can't relocate Scala classes.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 1.5.0
• Component/s: Table SQL / API
• Assignee: Unassigned
• Reporter: John Fang
• Created: 06/Feb/18 15:25
• Updated: 02/Oct/19 17:49
• Resolved: 07/Feb/18 07:46

Description

Maven-shade-plugin only relocate java classes, but not Scala classes. I try to decompile flink-table jar, and find those guava path not beed relocated on those Scala classes. But flink job run normally for all time. Because flink-dist_${scala.binary.version}.jar contains the google guava and flink shaded guava at the same time. Why is the google guava still contained int the flink?
Because we build flink by Maven-assembly-plugin at flink-disk module. The Assembly Plugin aggregate its all dependencies, includes those dependencies which are shaded now. If we use the following patch which exclude the Guava, then the flink-dist_${scala.binary.version}.jar only contains the flink-shaded-guava, not the google guava.

Issue Links

• is duplicated by: FLINK-8568 flink table's guava classes can't beed relocated by maven-shed-plugin.