[SPARK-20338][CORE] Spaces in spark.eventLog.dir are not correctly handled

## What changes were proposed in this pull request?

“spark.eventLog.dir” supports with space characters.

1. Update EventLoggingListenerSuite like `testDir = Utils.createTempDir(namePrefix = s"history log")`
2. Fix EventLoggingListenerSuite tests

## How was this patch tested?

update unit tests

Author: zuotingbing <zuo.tingbing9@zte.com.cn>

Closes #18285 from zuotingbing/spark-resolveURI.

Author: zuotingbing

core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala

@@ -96,8 +96,8 @@ private[spark] class EventLoggingListener(
     }
 
     val workingPath = logPath + IN_PROGRESS
-    val uri = new URI(workingPath)
     val path = new Path(workingPath)
+    val uri = path.toUri
     val defaultFs = FileSystem.getDefaultUri(hadoopConf).getScheme
     val isDefaultLocal = defaultFs == null || defaultFs == "file"
 
@@ -320,7 +320,7 @@ private[spark] object EventLoggingListener extends Logging {
       appId: String,
       appAttemptId: Option[String],
       compressionCodecName: Option[String] = None): String = {
-    val base = logBaseDir.toString.stripSuffix("/") + "/" + sanitize(appId)
+    val base = new Path(logBaseDir).toString.stripSuffix("/") + "/" + sanitize(appId)
     val codec = compressionCodecName.map("." + _).getOrElse("")
     if (appAttemptId.isDefined) {
       base + "_" + sanitize(appAttemptId.get) + codec

core/src/test/scala/org/apache/spark/deploy/history/FsHistoryProviderSuite.scala

@@ -18,7 +18,6 @@
 package org.apache.spark.deploy.history
 
 import java.io._
-import java.net.URI
 import java.nio.charset.StandardCharsets
 import java.util.concurrent.TimeUnit
 import java.util.zip.{ZipInputStream, ZipOutputStream}
@@ -27,7 +26,7 @@ import scala.concurrent.duration._
 import scala.language.postfixOps
 
 import com.google.common.io.{ByteStreams, Files}
-import org.apache.hadoop.fs.FileStatus
+import org.apache.hadoop.fs.{FileStatus, Path}
 import org.apache.hadoop.hdfs.DistributedFileSystem
 import org.json4s.jackson.JsonMethods._
 import org.mockito.Matchers.any
@@ -63,7 +62,7 @@ class FsHistoryProviderSuite extends SparkFunSuite with BeforeAndAfter with Matc
       codec: Option[String] = None): File = {
     val ip = if (inProgress) EventLoggingListener.IN_PROGRESS else ""
     val logUri = EventLoggingListener.getLogPath(testDir.toURI, appId, appAttemptId)
-    val logPath = new URI(logUri).getPath + ip
+    val logPath = new Path(logUri).toUri.getPath + ip
     new File(logPath)
   }
 

core/src/test/scala/org/apache/spark/scheduler/EventLoggingListenerSuite.scala

@@ -18,7 +18,6 @@
 package org.apache.spark.scheduler
 
 import java.io.{File, FileOutputStream, InputStream, IOException}
-import java.net.URI
 
 import scala.collection.mutable
 import scala.io.Source
@@ -52,7 +51,7 @@ class EventLoggingListenerSuite extends SparkFunSuite with LocalSparkContext wit
   private var testDirPath: Path = _
 
   before {
-    testDir = Utils.createTempDir()
+    testDir = Utils.createTempDir(namePrefix = s"history log")
     testDir.deleteOnExit()
     testDirPath = new Path(testDir.getAbsolutePath())
   }
@@ -111,7 +110,7 @@ class EventLoggingListenerSuite extends SparkFunSuite with LocalSparkContext wit
 
   test("Log overwriting") {
     val logUri = EventLoggingListener.getLogPath(testDir.toURI, "test", None)
-    val logPath = new URI(logUri).getPath
+    val logPath = new Path(logUri).toUri.getPath
     // Create file before writing the event log
     new FileOutputStream(new File(logPath)).close()
     // Expected IOException, since we haven't enabled log overwrite.
@@ -293,7 +292,7 @@ object EventLoggingListenerSuite {
     val conf = new SparkConf
     conf.set("spark.eventLog.enabled", "true")
     conf.set("spark.eventLog.testing", "true")
-    conf.set("spark.eventLog.dir", logDir.toUri.toString)
+    conf.set("spark.eventLog.dir", logDir.toString)
     compressionCodec.foreach { codec =>
       conf.set("spark.eventLog.compress", "true")
       conf.set("spark.io.compression.codec", codec)