Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/22441#discussion_r218486554
--- Diff: dev/create-release/release-build.sh ---
@@ -111,13 +111,17 @@ fi
# different versions of Scala are supported.
BASE_PROFILES="-Pmesos -Pyarn"
PUBLISH_SCALA_2_10=0
+PUBLISH_SCALA_2_12=0
SCALA_2_10_PROFILES="-Pscala-2.10"
SCALA_2_11_PROFILES=
-SCALA_2_12_PROFILES="-Pscala-2.12"
+SCALA_2_12_PROFILES="-Pscala-2.12 -Pkafka-0-8"
--- End diff --
Hm, it shouldn't, in that there's no 2.12 artifacts for Kafka 0.8
https://search.maven.org/search?q=g:org.apache.kafka%20AND%20a:kafka_2.12&core=gav
vs
```
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_${scala.binary.version}</artifactId>
<version>0.8.2.1</version>
```
Maybe it actually fails at the end of the 2.12 build, after a lot of it has
succeeded
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