HDFS-16109. Fix flaky some unit tests since they offen timeout (#3172)

Reviewed-by: Ayush Saxena <ayushsaxena@apache.org>
Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
(cherry picked from commit b87bac13e43c7a0b4f16002f5aff9d8c596413a9)

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

@@ -877,7 +877,7 @@ public class TestDecommission extends AdminStatesBaseTest {
    * 2. close file with decommissioning
    * @throws Exception
    */
-  @Test(timeout=180000)
+  @Test(timeout=360000)
   public void testDecommissionWithCloseFileAndListOpenFiles()
       throws Exception {
     LOG.info("Starting test testDecommissionWithCloseFileAndListOpenFiles");

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsVolumeList.java

@@ -331,7 +331,7 @@ public class TestFsVolumeList {
     assertEquals(600, volume4.getReserved());
   }
 
-  @Test(timeout = 60000)
+  @Test(timeout = 300000)
   public void testAddRplicaProcessorForAddingReplicaInMap() throws Exception {
     BlockPoolSlice.reInitializeAddReplicaThreadPool();
     Configuration cnf = new Configuration();

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

@@ -241,7 +241,7 @@ public class TestBootstrapStandby {
    * {@link DFSConfigKeys#DFS_IMAGE_TRANSFER_BOOTSTRAP_STANDBY_RATE_KEY}
    * created by HDFS-8808.
    */
-  @Test(timeout=30000)
+  @Test(timeout=180000)
   public void testRateThrottling() throws Exception {
     cluster.getConfiguration(0).setLong(
         DFSConfigKeys.DFS_IMAGE_TRANSFER_RATE_KEY, 1);