Github user kevinjmh commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2148#discussion_r182294264
--- Diff: pom.xml ---
@@ -121,6 +122,8 @@
<suite.name>org.apache.carbondata.cluster.sdv.suite.SDVSuites</suite.name>
<script.exetension>.sh</script.exetension>
<carbon.hive.based.metastore>false</carbon.hive.based.metastore>
+ <grpc.version>1.10.0</grpc.version>
+ <netty.version>4.0.43.Final</netty.version>
--- End diff --
I find that even the oldest version of grpc-netty depends on netty-codec-http2 which came out since 4.1.x.
see
http://mvnrepository.com/artifact/io.grpc/grpc-netty---