[SPARK-4628][BUILD] Remove all non-Maven-Central repositories from build

This patch removes all non-Maven-central repositories from Spark's build, thereby avoiding any risk of future build-breaks due to us accidentally depending on an artifact which is not present in an immutable public Maven repository.

I tested this by running

```
build/mvn \
        -Phive \
        -Phive-thriftserver \
        -Pkinesis-asl \
        -Pspark-ganglia-lgpl \
        -Pyarn \
        dependency:go-offline
```

inside of a fresh Ubuntu Docker container with no Ivy or Maven caches (I did a similar test for SBT).

Author: Josh Rosen <joshrosen@databricks.com>

Closes #10659 from JoshRosen/SPARK-4628.

1 files changed, 6 insertions, 1 deletions

diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 5d4f19ab14..4c34c888cf 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -141,7 +141,12 @@ object SparkBuild extends PomBuild {
     publishMavenStyle := true,
     unidocGenjavadocVersion := "0.9-spark0",
 
-    resolvers += Resolver.mavenLocal,
+    // Override SBT's default resolvers:
+    resolvers := Seq(
+      DefaultMavenRepository,
+      Resolver.mavenLocal
+    ),
+    externalResolvers := resolvers.value,
     otherResolvers <<= SbtPomKeys.mvnLocalRepository(dotM2 => Seq(Resolver.file("dotM2", dotM2))),
     publishLocalConfiguration in MavenCompile <<= (packagedArtifacts, deliverLocal, ivyLoggingLevel) map {
       (arts, _, level) => new PublishConfiguration(None, "dotM2", arts, Seq(), level)