HDFS-16913. Fix flaky some unit tests since they offen timeout (#5377)

Co-authored-by: gf13871 <gf13871@ly.com>
Reviewed-by: Tao Li <tomscut@apache.org>
Reviewed-by: Shilun Fan <slfan1989@apache.org>
Signed-off-by: Shilun Fan <slfan1989@apache.org>

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

@@ -32,7 +32,7 @@ public class TestFileLengthOnClusterRestart {
    * Tests the fileLength when we sync the file and restart the cluster and
    * Datanodes not report to Namenode yet.
    */
-  @Test(timeout = 60000)
+  @Test(timeout = 120000)
   public void testFileLengthWithHSyncAndClusterRestartWithOutDNsRegister()
       throws Exception {
     final Configuration conf = new HdfsConfiguration();

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLeaseRecovery2.java

@@ -493,17 +493,17 @@ public class TestLeaseRecovery2 {
    * 
    * @throws Exception
    */
-  @Test(timeout = 30000)
+  @Test(timeout = 60000)
   public void testHardLeaseRecoveryAfterNameNodeRestart() throws Exception {
     hardLeaseRecoveryRestartHelper(false, -1);
   }
 
-  @Test(timeout = 30000)
+  @Test(timeout = 60000)
   public void testHardLeaseRecoveryAfterNameNodeRestart2() throws Exception {
     hardLeaseRecoveryRestartHelper(false, 1535);
   }
 
-  @Test(timeout = 30000)
+  @Test(timeout = 60000)
   public void testHardLeaseRecoveryWithRenameAfterNameNodeRestart()
       throws Exception {
     hardLeaseRecoveryRestartHelper(true, -1);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerService.java

@@ -168,7 +168,7 @@ public class TestBalancerService {
     }
   }
 
-  @Test(timeout = 60000)
+  @Test(timeout = 120000)
   public void testBalancerServiceOnError() throws Exception {
     Configuration conf = new HdfsConfiguration();
     // retry for every 5 seconds

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

@@ -210,7 +210,7 @@ public class TestPipelinesFailover {
     doTestWriteOverFailoverWithDnFail(TestScenario.GRACEFUL_FAILOVER);
   }
   
-  @Test(timeout=30000)
+  @Test(timeout=60000)
   public void testWriteOverCrashFailoverWithDnFail() throws Exception {
     doTestWriteOverFailoverWithDnFail(TestScenario.ORIGINAL_ACTIVE_CRASHED);
   }

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

@@ -548,7 +548,7 @@ public class TestSnapshot {
    * paths work and the NN can load the resulting edits. This test if for
    * snapshots at the root level.
    */
-  @Test(timeout = 60000)
+  @Test(timeout = 120000)
   public void testSnapshotOpsOnRootReservedPath() throws Exception {
     Path dir = new Path("/");
     Path sub = new Path(dir, "sub");