Revert "[SPARK-6122][Core] Upgrade Tachyon client version to 0.6.1."

This reverts commit a41b9c6.

core/pom.xml

@@ -275,7 +275,7 @@
     <dependency>
       <groupId>org.tachyonproject</groupId>
       <artifactId>tachyon-client</artifactId>
-      <version>0.6.1</version>
+      <version>0.5.0</version>
       <exclusions>
         <exclusion>
           <groupId>org.apache.hadoop</groupId>

core/src/main/scala/org/apache/spark/storage/TachyonBlockManager.scala

@@ -20,8 +20,8 @@ package org.apache.spark.storage
 import java.text.SimpleDateFormat
 import java.util.{Date, Random}
 
-import tachyon.TachyonURI
-import tachyon.client.{TachyonFile, TachyonFS}
+import tachyon.client.TachyonFS
+import tachyon.client.TachyonFile
 
 import org.apache.spark.Logging
 import org.apache.spark.executor.ExecutorExitCode
@@ -40,7 +40,7 @@ private[spark] class TachyonBlockManager(
     val master: String)
   extends Logging {
 
-  val client = if (master != null && master != "") TachyonFS.get(new TachyonURI(master)) else null
+  val client = if (master != null && master != "") TachyonFS.get(master) else null
 
   if (client == null) {
     logError("Failed to connect to the Tachyon as the master address is not configured")
@@ -60,11 +60,11 @@ private[spark] class TachyonBlockManager(
   addShutdownHook()
 
   def removeFile(file: TachyonFile): Boolean = {
-    client.delete(new TachyonURI(file.getPath()), false)
+    client.delete(file.getPath(), false)
   }
 
   def fileExists(file: TachyonFile): Boolean = {
-    client.exist(new TachyonURI(file.getPath()))
+    client.exist(file.getPath())
   }
 
   def getFile(filename: String): TachyonFile = {
@@ -81,15 +81,15 @@ private[spark] class TachyonBlockManager(
         if (old != null) {
           old
         } else {
-          val path = new TachyonURI(s"${tachyonDirs(dirId)}/${"%02x".format(subDirId)}")
+          val path = tachyonDirs(dirId) + "/" + "%02x".format(subDirId)
           client.mkdir(path)
           val newDir = client.getFile(path)
           subDirs(dirId)(subDirId) = newDir
           newDir
         }
       }
     }
-    val filePath = new TachyonURI(s"$subDir/$filename")
+    val filePath = subDir + "/" + filename
     if(!client.exist(filePath)) {
       client.createFile(filePath)
     }
@@ -101,7 +101,7 @@ private[spark] class TachyonBlockManager(
 
   // TODO: Some of the logic here could be consolidated/de-duplicated with that in the DiskStore.
   private def createTachyonDirs(): Array[TachyonFile] = {
-    logDebug(s"Creating tachyon directories at root dirs '$rootDirs'")
+    logDebug("Creating tachyon directories at root dirs '" + rootDirs + "'")
     val dateFormat = new SimpleDateFormat("yyyyMMddHHmmss")
     rootDirs.split(",").map { rootDir =>
       var foundLocalDir = false
@@ -113,21 +113,22 @@ private[spark] class TachyonBlockManager(
         tries += 1
         try {
           tachyonDirId = "%s-%04x".format(dateFormat.format(new Date), rand.nextInt(65536))
-          val path = new TachyonURI(s"$rootDir/spark-tachyon-$tachyonDirId")
+          val path = rootDir + "/" + "spark-tachyon-" + tachyonDirId
           if (!client.exist(path)) {
             foundLocalDir = client.mkdir(path)
             tachyonDir = client.getFile(path)
           }
         } catch {
           case e: Exception =>
-            logWarning(s"Attempt $tries to create tachyon dir $tachyonDir failed", e)
+            logWarning("Attempt " + tries + " to create tachyon dir " + tachyonDir + " failed", e)
         }
       }
       if (!foundLocalDir) {
-        logError(s"Failed $MAX_DIR_CREATION_ATTEMPTS attempts to create tachyon dir in $rootDir")
+        logError("Failed " + MAX_DIR_CREATION_ATTEMPTS + " attempts to create tachyon dir in " +
+          rootDir)
         System.exit(ExecutorExitCode.TACHYON_STORE_FAILED_TO_CREATE_DIR)
       }
-      logInfo(s"Created tachyon directory at $tachyonDir")
+      logInfo("Created tachyon directory at " + tachyonDir)
       tachyonDir
     }
   }
@@ -144,7 +145,7 @@ private[spark] class TachyonBlockManager(
             }
           } catch {
             case e: Exception =>
-              logError(s"Exception while deleting tachyon spark dir: $tachyonDir", e)
+              logError("Exception while deleting tachyon spark dir: " + tachyonDir, e)
           }
         }
         client.close()

core/src/main/scala/org/apache/spark/util/Utils.scala

@@ -42,8 +42,6 @@ import org.apache.hadoop.security.UserGroupInformation
 import org.apache.log4j.PropertyConfigurator
 import org.eclipse.jetty.util.MultiException
 import org.json4s._
-
-import tachyon.TachyonURI
 import tachyon.client.{TachyonFS, TachyonFile}
 
 import org.apache.spark._
@@ -972,7 +970,7 @@ private[spark] object Utils extends Logging {
    * Delete a file or directory and its contents recursively.
    */
   def deleteRecursively(dir: TachyonFile, client: TachyonFS) {
-    if (!client.delete(new TachyonURI(dir.getPath()), true)) {
+    if (!client.delete(dir.getPath(), true)) {
       throw new IOException("Failed to delete the tachyon dir: " + dir)
     }
   }

make-distribution.sh

@@ -32,7 +32,7 @@ SPARK_HOME="$(cd "`dirname "$0"`"; pwd)"
 DISTDIR="$SPARK_HOME/dist"
 
 SPARK_TACHYON=false
-TACHYON_VERSION="0.6.1"
+TACHYON_VERSION="0.5.0"
 TACHYON_TGZ="tachyon-${TACHYON_VERSION}-bin.tar.gz"
 TACHYON_URL="https://github.com/amplab/tachyon/releases/download/v${TACHYON_VERSION}/${TACHYON_TGZ}"