HDFS-16281. Fix flaky unit tests failed due to timeout

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/viewfs/TestViewFileSystemOverloadSchemeHdfsFileSystemContract.java

@@ -103,7 +103,7 @@ protected String getDefaultWorkingDirectory() {
   }
 
   @Override
-  @Test
+  @Test(timeout = 60000)
   public void testAppend() throws IOException {
     AppendTestUtil.testAppend(fs, new Path("/append/f"));
   }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/viewfs/TestViewFileSystemOverloadSchemeWithHdfsScheme.java

@@ -496,7 +496,7 @@ private boolean isFallBackExist(Configuration config) {
    * When InnerCache disabled, all matching ViewFileSystemOverloadScheme
    * initialized scheme file systems would not use FileSystem cache.
    */
-  @Test(timeout = 3000)
+  @Test(timeout = 30000)
   public void testViewFsOverloadSchemeWithNoInnerCacheAndHdfsTargets()
       throws Exception {
     final Path hdfsTargetPath = new Path(defaultFSURI + HDFS_USER_FOLDER);
@@ -523,7 +523,7 @@ public void testViewFsOverloadSchemeWithNoInnerCacheAndHdfsTargets()
    * initialized scheme file systems should continue to take advantage of
    * FileSystem cache.
    */
-  @Test(timeout = 3000)
+  @Test(timeout = 30000)
   public void testViewFsOverloadSchemeWithNoInnerCacheAndLocalSchemeTargets()
       throws Exception {
     final Path localTragetPath = new Path(localTargetDir.toURI());
@@ -545,7 +545,7 @@ public void testViewFsOverloadSchemeWithNoInnerCacheAndLocalSchemeTargets()
   /**
    * Tests the rename with nfly mount link.
    */
-  @Test(timeout = 3000)
+  @Test(timeout = 30000)
   public void testNflyRename() throws Exception {
     final Path hdfsTargetPath1 = new Path(defaultFSURI + HDFS_USER_FOLDER);
     final Path hdfsTargetPath2 = new Path(defaultFSURI + HDFS_USER_FOLDER + 1);
@@ -577,7 +577,7 @@ public void testNflyRename() throws Exception {
   /**
    * Tests the write and read contents with nfly mount link.
    */
-  @Test(timeout = 3000)
+  @Test(timeout = 30000)
   public void testNflyWriteRead() throws Exception {
     final Path hdfsTargetPath1 = new Path(defaultFSURI + HDFS_USER_FOLDER);
     final Path hdfsTargetPath2 = new Path(defaultFSURI + HDFS_USER_FOLDER + 1);
@@ -604,7 +604,7 @@ public void testNflyWriteRead() throws Exception {
    * target file. 3. Tests the read works with repairOnRead flag. 4. Tests that
    * previously deleted file fully recovered and exists.
    */
-  @Test(timeout = 3000)
+  @Test(timeout = 30000)
   public void testNflyRepair() throws Exception {
     final NflyFSystem.NflyKey repairKey = NflyFSystem.NflyKey.repairOnRead;
     final Path hdfsTargetPath1 = new Path(defaultFSURI + HDFS_USER_FOLDER);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestHDFSFileSystemContract.java

@@ -63,7 +63,7 @@ protected String getDefaultWorkingDirectory() {
     return defaultWorkingDirectory;
   }
 
-  @Test
+  @Test(timeout = 60000)
   public void testAppend() throws IOException {
     AppendTestUtil.testAppend(fs, new Path("/testAppend/f"));
   }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSnapshotCommands.java

@@ -224,7 +224,7 @@ public void testSnapshotCommandsWithURI()throws Exception {
     fs.delete(new Path("/Fully/QPath"), true);
   }
 
-  @Test (timeout=60000)
+  @Test (timeout=120000)
   public void testSnapshotDiff()throws Exception {
     Configuration config = new HdfsConfiguration();
     Path snapDirPath = new Path(fs.getUri().toString() + "/snap_dir");

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/diskbalancer/command/TestDiskBalancerCommand.java

@@ -158,7 +158,7 @@ public void testSubmitPlanInNonRegularStatus() throws Exception {
    * Tests running multiple commands under on setup. This mainly covers
    * {@link org.apache.hadoop.hdfs.server.diskbalancer.command.Command#close}
    */
-  @Test(timeout = 60000)
+  @Test(timeout = 120000)
   public void testRunMultipleCommandsUnderOneSetup() throws Exception {
 
     final int numDatanodes = 1;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNamenodeStorageDirectives.java

@@ -192,7 +192,7 @@ private void testStorageTypes(StorageType[][] storageTypes,
    * Types.
    * @throws IOException
    */
-  @Test(timeout=60000)
+  @Test(timeout=120000)
   public void testTargetStorageTypes() throws ReconfigurationException,
       InterruptedException, TimeoutException, IOException {
     // DISK and not anything else.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsFileSystemContract.java

@@ -396,7 +396,7 @@ public void testOffsetPlusLengthParamsLongerThanFile() throws IOException {
     }
   }
 
-  @Test
+  @Test(timeout = 60000)
   public void testResponseCode() throws IOException {
     final WebHdfsFileSystem webhdfs = (WebHdfsFileSystem)fs;
     final Path root = new Path("/");