[SPARK-7205] Support .ivy2/local and .m2/repositories/ in --packages

In addition, I made a small change that will allow users to import 2 different artifacts with the same name. That change is made in `[organization]_[artifact]-[revision].[ext]`. This used to be only `[artifact].[ext]` which might have caused collisions between artifacts with the same artifactId, but different groupId's.

cc pwendell

Author: Burak Yavuz <brkyvz@gmail.com>

Closes apache#5755 from brkyvz/local-caches and squashes the following commits:

c47c9c5 [Burak Yavuz] Small fixes to --packages

core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala

@@ -734,13 +734,31 @@ private[deploy] object SparkSubmitUtils {
   /**
    * Extracts maven coordinates from a comma-delimited string
    * @param remoteRepos Comma-delimited string of remote repositories
+   * @param ivySettings The Ivy settings for this session
    * @return A ChainResolver used by Ivy to search for and resolve dependencies.
    */
-  def createRepoResolvers(remoteRepos: Option[String]): ChainResolver = {
+  def createRepoResolvers(remoteRepos: Option[String], ivySettings: IvySettings): ChainResolver = {
     // We need a chain resolver if we want to check multiple repositories
     val cr = new ChainResolver
     cr.setName("list")
 
+    val localM2 = new IBiblioResolver
+    localM2.setM2compatible(true)
+    val m2Path = ".m2" + File.separator + "repository" + File.separator
+    localM2.setRoot(new File(System.getProperty("user.home"), m2Path).toURI.toString)
+    localM2.setUsepoms(true)
+    localM2.setName("local-m2-cache")
+    cr.add(localM2)
+
+    val localIvy = new IBiblioResolver
+    localIvy.setRoot(new File(ivySettings.getDefaultIvyUserDir,
+      "local" + File.separator).toURI.toString)
+    val ivyPattern = Seq("[organisation]", "[module]", "[revision]", "[type]s",
+      "[artifact](-[classifier]).[ext]").mkString(File.separator)
+    localIvy.setPattern(ivyPattern)
+    localIvy.setName("local-ivy-cache")
+    cr.add(localIvy)
+
     // the biblio resolver resolves POM declared dependencies
     val br: IBiblioResolver = new IBiblioResolver
     br.setM2compatible(true)
@@ -773,8 +791,7 @@ private[deploy] object SparkSubmitUtils {
 
   /**
    * Output a comma-delimited list of paths for the downloaded jars to be added to the classpath
-   * (will append to jars in SparkSubmit). The name of the jar is given
-   * after a '!' by Ivy. It also sometimes contains '(bundle)' after '.jar'. Remove that as well.
+   * (will append to jars in SparkSubmit).
    * @param artifacts Sequence of dependencies that were resolved and retrieved
    * @param cacheDirectory directory where jars are cached
    * @return a comma-delimited list of paths for the dependencies
@@ -783,10 +800,9 @@ private[deploy] object SparkSubmitUtils {
       artifacts: Array[AnyRef],
       cacheDirectory: File): String = {
     artifacts.map { artifactInfo =>
-      val artifactString = artifactInfo.toString
-      val jarName = artifactString.drop(artifactString.lastIndexOf("!") + 1)
+      val artifact = artifactInfo.asInstanceOf[Artifact].getModuleRevisionId
       cacheDirectory.getAbsolutePath + File.separator +
-        jarName.substring(0, jarName.lastIndexOf(".jar") + 4)
+        s"${artifact.getOrganisation}_${artifact.getName}-${artifact.getRevision}.jar"
     }.mkString(",")
   }
 
@@ -868,6 +884,7 @@ private[deploy] object SparkSubmitUtils {
         if (alternateIvyCache.trim.isEmpty) {
           new File(ivySettings.getDefaultIvyUserDir, "jars")
         } else {
+          ivySettings.setDefaultIvyUserDir(new File(alternateIvyCache))
           ivySettings.setDefaultCache(new File(alternateIvyCache, "cache"))
           new File(alternateIvyCache, "jars")
         }
@@ -877,7 +894,7 @@ private[deploy] object SparkSubmitUtils {
       // create a pattern matcher
       ivySettings.addMatcher(new GlobPatternMatcher)
       // create the dependency resolvers
-      val repoResolver = createRepoResolvers(remoteRepos)
+      val repoResolver = createRepoResolvers(remoteRepos, ivySettings)
       ivySettings.addResolver(repoResolver)
       ivySettings.setDefaultResolver(repoResolver.getName)
 
@@ -911,7 +928,8 @@ private[deploy] object SparkSubmitUtils {
       }
       // retrieve all resolved dependencies
       ivy.retrieve(rr.getModuleDescriptor.getModuleRevisionId,
-        packagesDirectory.getAbsolutePath + File.separator + "[artifact](-[classifier]).[ext]",
+        packagesDirectory.getAbsolutePath + File.separator +
+          "[organization]_[artifact]-[revision].[ext]",
         retrieveOptions.setConfs(Array(ivyConfName)))
       System.setOut(sysOut)
       resolveDependencyPaths(rr.getArtifacts.toArray, packagesDirectory)

core/src/test/scala/org/apache/spark/deploy/SparkSubmitUtilsSuite.scala

@@ -19,6 +19,8 @@ package org.apache.spark.deploy
 
 import java.io.{PrintStream, OutputStream, File}
 
+import org.apache.ivy.core.settings.IvySettings
+
 import scala.collection.mutable.ArrayBuffer
 
 import org.scalatest.{BeforeAndAfterAll, FunSuite}
@@ -56,24 +58,23 @@ class SparkSubmitUtilsSuite extends FunSuite with BeforeAndAfterAll {
   }
 
   test("create repo resolvers") {
-    val resolver1 = SparkSubmitUtils.createRepoResolvers(None)
+    val settings = new IvySettings
+    val res1 = SparkSubmitUtils.createRepoResolvers(None, settings)
     // should have central and spark-packages by default
-    assert(resolver1.getResolvers.size() === 2)
-    assert(resolver1.getResolvers.get(0).asInstanceOf[IBiblioResolver].getName === "central")
-    assert(resolver1.getResolvers.get(1).asInstanceOf[IBiblioResolver].getName === "spark-packages")
+    assert(res1.getResolvers.size() === 4)
+    assert(res1.getResolvers.get(0).asInstanceOf[IBiblioResolver].getName === "local-m2-cache")
+    assert(res1.getResolvers.get(1).asInstanceOf[IBiblioResolver].getName === "local-ivy-cache")
+    assert(res1.getResolvers.get(2).asInstanceOf[IBiblioResolver].getName === "central")
+    assert(res1.getResolvers.get(3).asInstanceOf[IBiblioResolver].getName === "spark-packages")
 
     val repos = "a/1,b/2,c/3"
-    val resolver2 = SparkSubmitUtils.createRepoResolvers(Option(repos))
-    assert(resolver2.getResolvers.size() === 5)
+    val resolver2 = SparkSubmitUtils.createRepoResolvers(Option(repos), settings)
+    assert(resolver2.getResolvers.size() === 7)
     val expected = repos.split(",").map(r => s"$r/")
     resolver2.getResolvers.toArray.zipWithIndex.foreach { case (resolver: IBiblioResolver, i) =>
-      if (i == 0) {
-        assert(resolver.getName === "central")
-      } else if (i == 1) {
-        assert(resolver.getName === "spark-packages")
-      } else {
-        assert(resolver.getName === s"repo-${i - 1}")
-        assert(resolver.getRoot === expected(i - 2))
+      if (i > 3) {
+        assert(resolver.getName === s"repo-${i - 3}")
+        assert(resolver.getRoot === expected(i - 4))
       }
     }
   }