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From varunsax...@apache.org
Subject hadoop git commit: YARN-5359. FileSystemTimelineReader/Writer uses unix-specific default storage path (Sangjin Lee via Varun Saxena)
Date Wed, 13 Jul 2016 15:53:09 GMT
Repository: hadoop
Updated Branches:
  refs/heads/trunk d6d41e820 -> 56142171b


YARN-5359. FileSystemTimelineReader/Writer uses unix-specific default storage path (Sangjin
Lee via Varun Saxena)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/56142171
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/56142171
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/56142171

Branch: refs/heads/trunk
Commit: 56142171b9528646f26072e022902549a16c8f27
Parents: d6d41e8
Author: Varun Saxena <varunsaxena@apache.org>
Authored: Wed Jul 13 21:15:05 2016 +0530
Committer: Varun Saxena <varunsaxena@apache.org>
Committed: Wed Jul 13 21:15:41 2016 +0530

----------------------------------------------------------------------
 .../TestTimelineServiceClientIntegration.java   |  8 ++++
 .../storage/FileSystemTimelineReaderImpl.java   | 28 +++++++-------
 .../storage/FileSystemTimelineWriterImpl.java   | 16 ++++----
 .../reader/TestTimelineReaderWebServices.java   | 12 +++++-
 .../TestFileSystemTimelineReaderImpl.java       | 39 ++++++++++++--------
 .../TestFileSystemTimelineWriterImpl.java       | 36 ++++++++++--------
 6 files changed, 85 insertions(+), 54 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/56142171/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/TestTimelineServiceClientIntegration.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/TestTimelineServiceClientIntegration.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/TestTimelineServiceClientIntegration.java
index 5a63547..3ec222f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/TestTimelineServiceClientIntegration.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/TestTimelineServiceClientIntegration.java
@@ -24,8 +24,10 @@ import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
+import java.io.File;
 import java.io.IOException;
 
+import org.apache.commons.io.FileUtils;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.ExitUtil;
@@ -56,6 +58,9 @@ import org.junit.BeforeClass;
 import org.junit.Test;
 
 public class TestTimelineServiceClientIntegration {
+  private static final String ROOT_DIR = new File("target",
+      TestTimelineServiceClientIntegration.class.getSimpleName()).
+          getAbsolutePath();
   private static NodeTimelineCollectorManager collectorManager;
   private static PerNodeTimelineCollectorsAuxService auxService;
   private static Configuration conf;
@@ -70,6 +75,8 @@ public class TestTimelineServiceClientIntegration {
       conf.setFloat(YarnConfiguration.TIMELINE_SERVICE_VERSION, 2.0f);
       conf.setClass(YarnConfiguration.TIMELINE_SERVICE_WRITER_CLASS,
           FileSystemTimelineWriterImpl.class, TimelineWriter.class);
+      conf.set(FileSystemTimelineWriterImpl.TIMELINE_SERVICE_STORAGE_DIR_ROOT,
+          ROOT_DIR);
       auxService =
           PerNodeTimelineCollectorsAuxService.launchServer(new String[0],
               collectorManager, conf);
@@ -84,6 +91,7 @@ public class TestTimelineServiceClientIntegration {
     if (auxService != null) {
       auxService.stop();
     }
+    FileUtils.deleteDirectory(new File(ROOT_DIR));
   }
 
   @Test

http://git-wip-us.apache.org/repos/asf/hadoop/blob/56142171/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineReaderImpl.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineReaderImpl.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineReaderImpl.java
index 047f401..ebb73b3 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineReaderImpl.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineReaderImpl.java
@@ -77,15 +77,12 @@ public class FileSystemTimelineReaderImpl extends AbstractService
   /** Default extension for output files. */
   static final String APP_FLOW_MAPPING_FILE = "app_flow_mapping.csv";
 
-  @VisibleForTesting
   /** Config param for timeline service file system storage root. */
-  static final String TIMELINE_SERVICE_STORAGE_DIR_ROOT =
+  public static final String TIMELINE_SERVICE_STORAGE_DIR_ROOT =
       YarnConfiguration.TIMELINE_SERVICE_PREFIX + "fs-writer.root-dir";
 
-  @VisibleForTesting
   /** Default value for storage location on local disk. */
-  static final String DEFAULT_TIMELINE_SERVICE_STORAGE_DIR_ROOT =
-      "/tmp/timeline_service_data";
+  private static final String STORAGE_DIR_ROOT = "timeline_service_data";
 
   private final CSVFormat csvFormat =
       CSVFormat.DEFAULT.withHeader("APP", "USER", "FLOW", "FLOWRUN");
@@ -159,13 +156,13 @@ public class FileSystemTimelineReaderImpl extends AbstractService
   private String getFlowRunPath(String userId, String clusterId,
       String flowName, Long flowRunId, String appId) throws IOException {
     if (userId != null && flowName != null && flowRunId != null) {
-      return userId + "/" + flowName + "/" + flowRunId;
+      return userId + File.separator + flowName + File.separator + flowRunId;
     }
     if (clusterId == null || appId == null) {
       throw new IOException("Unable to get flow info");
     }
-    String appFlowMappingFile = rootPath + "/" +  ENTITIES_DIR + "/" +
-        clusterId + "/" + APP_FLOW_MAPPING_FILE;
+    String appFlowMappingFile = rootPath + File.separator +  ENTITIES_DIR +
+        File.separator + clusterId + File.separator + APP_FLOW_MAPPING_FILE;
     try (BufferedReader reader =
              new BufferedReader(new InputStreamReader(
                  new FileInputStream(
@@ -180,8 +177,8 @@ public class FileSystemTimelineReaderImpl extends AbstractService
             !applicationId.trim().equals(appId)) {
           continue;
         }
-        return record.get(1).trim() + "/" + record.get(2).trim() + "/" +
-            record.get(3).trim();
+        return record.get(1).trim() + File.separator + record.get(2).trim() +
+            File.separator + record.get(3).trim();
       }
       parser.close();
     }
@@ -364,7 +361,7 @@ public class FileSystemTimelineReaderImpl extends AbstractService
   @Override
   public void serviceInit(Configuration conf) throws Exception {
     rootPath = conf.get(TIMELINE_SERVICE_STORAGE_DIR_ROOT,
-        DEFAULT_TIMELINE_SERVICE_STORAGE_DIR_ROOT);
+        conf.get("hadoop.tmp.dir") + File.separator + STORAGE_DIR_ROOT);
     super.serviceInit(conf);
   }
 
@@ -375,8 +372,8 @@ public class FileSystemTimelineReaderImpl extends AbstractService
         context.getClusterId(), context.getFlowName(), context.getFlowRunId(),
         context.getAppId());
     File dir = new File(new File(rootPath, ENTITIES_DIR),
-        context.getClusterId() + "/" + flowRunPath + "/" + context.getAppId() +
-        "/" + context.getEntityType());
+        context.getClusterId() + File.separator + flowRunPath + File.separator +
+        context.getAppId() + File.separator + context.getEntityType());
     File entityFile = new File(
         dir, context.getEntityId() + TIMELINE_SERVICE_STORAGE_EXTENSION);
     try (BufferedReader reader =
@@ -401,8 +398,9 @@ public class FileSystemTimelineReaderImpl extends AbstractService
         context.getAppId());
     File dir =
         new File(new File(rootPath, ENTITIES_DIR),
-            context.getClusterId() + "/" + flowRunPath + "/" +
-            context.getAppId() + "/" + context.getEntityType());
+            context.getClusterId() + File.separator + flowRunPath +
+            File.separator + context.getAppId() + File.separator +
+            context.getEntityType());
     return getEntities(dir, context.getEntityType(), filters, dataToRetrieve);
   }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hadoop/blob/56142171/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineWriterImpl.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineWriterImpl.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineWriterImpl.java
index 1bb77a0..1f527f2 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineWriterImpl.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/FileSystemTimelineWriterImpl.java
@@ -36,6 +36,8 @@ import org.apache.hadoop.yarn.api.records.timelineservice.TimelineWriteResponse.
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.util.timeline.TimelineUtils;
 
+import com.google.common.annotations.VisibleForTesting;
+
 /**
  * This implements a local file based backend for storing application timeline
  * information. This implementation may not provide a complete implementation of
@@ -53,15 +55,14 @@ public class FileSystemTimelineWriterImpl extends AbstractService
   public static final String TIMELINE_SERVICE_STORAGE_DIR_ROOT
       = YarnConfiguration.TIMELINE_SERVICE_PREFIX + "fs-writer.root-dir";
 
-  /** default value for storage location on local disk. */
-  public static final String DEFAULT_TIMELINE_SERVICE_STORAGE_DIR_ROOT
-      = "/tmp/timeline_service_data";
-
   public static final String ENTITIES_DIR = "entities";
 
   /** Default extension for output files. */
   public static final String TIMELINE_SERVICE_STORAGE_EXTENSION = ".thist";
 
+  /** default value for storage location on local disk. */
+  private static final String STORAGE_DIR_ROOT = "timeline_service_data";
+
   FileSystemTimelineWriterImpl() {
     super((FileSystemTimelineWriterImpl.class.getName()));
   }
@@ -117,14 +118,15 @@ public class FileSystemTimelineWriterImpl extends AbstractService
 
   }
 
-  public String getOutputRoot() {
+  @VisibleForTesting
+  String getOutputRoot() {
     return outputRoot;
   }
 
   @Override
   public void serviceInit(Configuration conf) throws Exception {
     outputRoot = conf.get(TIMELINE_SERVICE_STORAGE_DIR_ROOT,
-        DEFAULT_TIMELINE_SERVICE_STORAGE_DIR_ROOT);
+        conf.get("hadoop.tmp.dir") + File.separator + STORAGE_DIR_ROOT);
   }
 
   @Override
@@ -140,7 +142,7 @@ public class FileSystemTimelineWriterImpl extends AbstractService
   private static String mkdirs(String... dirStrs) throws IOException {
     StringBuilder path = new StringBuilder();
     for (String dirStr : dirStrs) {
-      path.append(dirStr).append('/');
+      path.append(dirStr).append(File.separatorChar);
       File dir = new File(path.toString());
       if (!dir.exists()) {
         if (!dir.mkdirs()) {

http://git-wip-us.apache.org/repos/asf/hadoop/blob/56142171/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/reader/TestTimelineReaderWebServices.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/reader/TestTimelineReaderWebServices.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/reader/TestTimelineReaderWebServices.java
index 4ade024..a5ef66c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/reader/TestTimelineReaderWebServices.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/reader/TestTimelineReaderWebServices.java
@@ -23,6 +23,7 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 
+import java.io.File;
 import java.io.IOException;
 import java.lang.reflect.UndeclaredThrowableException;
 import java.net.HttpURLConnection;
@@ -32,6 +33,7 @@ import java.util.Set;
 
 import javax.ws.rs.core.MediaType;
 
+import org.apache.commons.io.FileUtils;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.records.timeline.TimelineAbout;
 import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
@@ -57,17 +59,21 @@ import com.sun.jersey.client.urlconnection.HttpURLConnectionFactory;
 import com.sun.jersey.client.urlconnection.URLConnectionClientHandler;
 
 public class TestTimelineReaderWebServices {
+
+  private static final String ROOT_DIR = new File("target",
+      TestTimelineReaderWebServices.class.getSimpleName()).getAbsolutePath();
+
   private int serverPort;
   private TimelineReaderServer server;
 
   @BeforeClass
   public static void setup() throws Exception {
-    TestFileSystemTimelineReaderImpl.setup();
+    TestFileSystemTimelineReaderImpl.initializeDataDirectory(ROOT_DIR);
   }
 
   @AfterClass
   public static void tearDown() throws Exception {
-    TestFileSystemTimelineReaderImpl.tearDown();
+    FileUtils.deleteDirectory(new File(ROOT_DIR));
   }
 
   @Before
@@ -81,6 +87,8 @@ public class TestTimelineReaderWebServices {
       config.set(YarnConfiguration.RM_CLUSTER_ID, "cluster1");
       config.setClass(YarnConfiguration.TIMELINE_SERVICE_READER_CLASS,
           FileSystemTimelineReaderImpl.class, TimelineReader.class);
+      config.set(FileSystemTimelineReaderImpl.TIMELINE_SERVICE_STORAGE_DIR_ROOT,
+          ROOT_DIR);
       server = new TimelineReaderServer();
       server.init(config);
       server.start();

http://git-wip-us.apache.org/repos/asf/hadoop/blob/56142171/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineReaderImpl.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineReaderImpl.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineReaderImpl.java
index b58bbe3..90f11a5 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineReaderImpl.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineReaderImpl.java
@@ -43,11 +43,11 @@ import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineEntityFilter
 import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderContext;
 import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineCompareFilter;
 import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineCompareOp;
-import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineKeyValueFilter;
-import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineKeyValuesFilter;
 import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineExistsFilter;
 import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineFilterList;
 import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineFilterList.Operator;
+import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineKeyValueFilter;
+import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineKeyValuesFilter;
 import org.apache.hadoop.yarn.server.timelineservice.storage.TimelineReader.Field;
 import org.apache.hadoop.yarn.util.timeline.TimelineUtils;
 import org.junit.AfterClass;
@@ -58,17 +58,22 @@ import org.junit.Test;
 
 public class TestFileSystemTimelineReaderImpl {
 
-  private static final String ROOT_DIR =
-      FileSystemTimelineReaderImpl.DEFAULT_TIMELINE_SERVICE_STORAGE_DIR_ROOT;
+  private static final String ROOT_DIR = new File("target",
+      TestFileSystemTimelineReaderImpl.class.getSimpleName()).getAbsolutePath();
   private FileSystemTimelineReaderImpl reader;
 
   @BeforeClass
   public static void setup() throws Exception {
-    loadEntityData();
+    initializeDataDirectory(ROOT_DIR);
+  }
+
+  public static void initializeDataDirectory(String rootDir) throws Exception {
+    loadEntityData(rootDir);
     // Create app flow mapping file.
     CSVFormat format =
         CSVFormat.DEFAULT.withHeader("APP", "USER", "FLOW", "FLOWRUN");
-    String appFlowMappingFile = ROOT_DIR + "/entities/cluster1/" +
+    String appFlowMappingFile = rootDir + File.separator + "entities" +
+        File.separator + "cluster1" + File.separator +
         FileSystemTimelineReaderImpl.APP_FLOW_MAPPING_FILE;
     try (PrintWriter out =
         new PrintWriter(new BufferedWriter(
@@ -78,7 +83,7 @@ public class TestFileSystemTimelineReaderImpl {
       printer.printRecord("app2", "user1", "flow1,flow", 1);
       printer.close();
     }
-    (new File(ROOT_DIR)).deleteOnExit();
+    (new File(rootDir)).deleteOnExit();
   }
 
   @AfterClass
@@ -102,7 +107,8 @@ public class TestFileSystemTimelineReaderImpl {
         throw new IOException("Could not create directories for " + dir);
       }
     }
-    String fileName = dir.getAbsolutePath() + "/" + entity.getId() + ".thist";
+    String fileName = dir.getAbsolutePath() + File.separator + entity.getId() +
+        ".thist";
     try (PrintWriter out =
         new PrintWriter(new BufferedWriter(new FileWriter(fileName, true)))){
       out.println(TimelineUtils.dumpTimelineRecordtoJSON(entity));
@@ -111,9 +117,8 @@ public class TestFileSystemTimelineReaderImpl {
     }
   }
 
-  private static void loadEntityData() throws Exception {
-    File appDir = new File(ROOT_DIR +
-        "/entities/cluster1/user1/flow1/1/app1/app/");
+  private static void loadEntityData(String rootDir) throws Exception {
+    File appDir = getAppDir(rootDir, "cluster1", "user1", "flow1", "1", "app1");
     TimelineEntity entity11 = new TimelineEntity();
     entity11.setId("id_1");
     entity11.setType("app");
@@ -254,8 +259,8 @@ public class TestFileSystemTimelineReaderImpl {
     entity4.addEvent(event44);
     writeEntityFile(entity4, appDir);
 
-    File appDir2 = new File(ROOT_DIR +
-            "/entities/cluster1/user1/flow1,flow/1/app2/app/");
+    File appDir2 =
+        getAppDir(rootDir, "cluster1", "user1", "flow1,flow", "1", "app2");
     TimelineEntity entity5 = new TimelineEntity();
     entity5.setId("id_5");
     entity5.setType("app");
@@ -263,8 +268,12 @@ public class TestFileSystemTimelineReaderImpl {
     writeEntityFile(entity5, appDir2);
   }
 
-  public TimelineReader getTimelineReader() {
-    return reader;
+  private static File getAppDir(String rootDir, String cluster, String user,
+      String flowName, String flowRunId, String appId) {
+    return new File(rootDir + File.separator + "entities" + File.separator +
+        cluster + File.separator + user + File.separator + flowName +
+        File.separator + flowRunId + File.separator + appId + File.separator +
+        "app" + File.separator);
   }
 
   @Test

http://git-wip-us.apache.org/repos/asf/hadoop/blob/56142171/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineWriterImpl.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineWriterImpl.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineWriterImpl.java
index 15be494..4f12c57 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineWriterImpl.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestFileSystemTimelineWriterImpl.java
@@ -29,16 +29,20 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.commons.io.FileUtils;
-import org.apache.hadoop.yarn.api.records.timelineservice.TimelineMetricOperation;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntities;
 import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
 import org.apache.hadoop.yarn.api.records.timelineservice.TimelineMetric;
+import org.apache.hadoop.yarn.api.records.timelineservice.TimelineMetricOperation;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.util.timeline.TimelineUtils;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
 
 public class TestFileSystemTimelineWriterImpl {
+  @Rule
+  public TemporaryFolder tmpFolder = new TemporaryFolder();
 
   /**
    * Unit test for PoC YARN 3264.
@@ -79,14 +83,20 @@ public class TestFileSystemTimelineWriterImpl {
     FileSystemTimelineWriterImpl fsi = null;
     try {
       fsi = new FileSystemTimelineWriterImpl();
-      fsi.init(new YarnConfiguration());
+      Configuration conf = new YarnConfiguration();
+      String outputRoot = tmpFolder.newFolder().getAbsolutePath();
+      conf.set(FileSystemTimelineWriterImpl.TIMELINE_SERVICE_STORAGE_DIR_ROOT,
+          outputRoot);
+      fsi.init(conf);
       fsi.start();
       fsi.write("cluster_id", "user_id", "flow_name", "flow_version", 12345678L,
           "app_id", te);
 
-      String fileName = fsi.getOutputRoot() +
-          "/entities/cluster_id/user_id/flow_name/flow_version/12345678/" +
-          "app_id/" + type + "/" + id +
+      String fileName = fsi.getOutputRoot() + File.separator + "entities" +
+          File.separator + "cluster_id" + File.separator + "user_id" +
+          File.separator + "flow_name" + File.separator + "flow_version" +
+          File.separator + "12345678" + File.separator + "app_id" +
+          File.separator + type + File.separator + id +
           FileSystemTimelineWriterImpl.TIMELINE_SERVICE_STORAGE_EXTENSION;
       Path path = Paths.get(fileName);
       File f = new File(fileName);
@@ -99,9 +109,11 @@ public class TestFileSystemTimelineWriterImpl {
       assertEquals(d, TimelineUtils.dumpTimelineRecordtoJSON(entity));
 
       // verify aggregated metrics
-      String fileName2 = fsi.getOutputRoot() +
-          "/entities/cluster_id/user_id/flow_name/flow_version/12345678/app_id/"
-          + type2 + "/" + id2 +
+      String fileName2 = fsi.getOutputRoot() + File.separator + "entities" +
+          File.separator + "cluster_id" + File.separator + "user_id" +
+          File.separator + "flow_name" + File.separator + "flow_version" +
+          File.separator + "12345678" + File.separator + "app_id" +
+          File.separator + type2 + File.separator + id2 +
           FileSystemTimelineWriterImpl.TIMELINE_SERVICE_STORAGE_EXTENSION;
       Path path2 = Paths.get(fileName2);
       File file = new File(fileName2);
@@ -113,15 +125,9 @@ public class TestFileSystemTimelineWriterImpl {
       // confirm the contents same as what was written
       assertEquals(metricToString,
           TimelineUtils.dumpTimelineRecordtoJSON(entity2));
-
-      // delete the directory
-      File outputDir = new File(fsi.getOutputRoot());
-      FileUtils.deleteDirectory(outputDir);
-      assertTrue(!(f.exists()));
     } finally {
       if (fsi != null) {
         fsi.close();
-        FileUtils.deleteDirectory(new File(fsi.getOutputRoot()));
       }
     }
   }


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