Github user maropu commented on a diff in the pull request:
https://github.com/apache/incubator-hivemall/pull/171#discussion_r233261637
--- Diff: spark/pom.xml ---
@@ -52,6 +52,12 @@
<artifactId>hivemall-core</artifactId>
<version>${project.version}</version>
<scope>compile</scope>
+ <exclusions>
+ <exclusion>
+ <groupId>io.netty</groupId>
+
<artifactId>netty-all</artifactId>
+ </exclusion>
--- End diff --
Because the `netty` version conflicts with the one in spark.---
