/** Test that FSNamesystem#clear clears all leases. */
@Test
public void testFSNamespaceClearLeases() throws Exception {
Configuration conf = new HdfsConfiguration();
File nameDir = new File(MiniDFSCluster.getBaseDirectory(), "name");
conf.set(DFS_NAMENODE_NAME_DIR_KEY, nameDir.getAbsolutePath());
NameNode.initMetrics(conf, NamenodeRole.NAMENODE);
DFSTestUtil.formatNameNode(conf);
FSNamesystem fsn = FSNamesystem.loadFromDisk(conf);
LeaseManager leaseMan = fsn.getLeaseManager();
leaseMan.addLease("client1", "importantFile");
assertEquals(1, leaseMan.countLease());
fsn.clear();
leaseMan = fsn.getLeaseManager();
assertEquals(0, leaseMan.countLease());
}
@Test
public void testReplQueuesActiveAfterStartupSafemode() throws IOException, InterruptedException {
Configuration conf = new Configuration();
FSEditLog fsEditLog = Mockito.mock(FSEditLog.class);
FSImage fsImage = Mockito.mock(FSImage.class);
Mockito.when(fsImage.getEditLog()).thenReturn(fsEditLog);
FSNamesystem fsNamesystem = new FSNamesystem(conf, fsImage);
FSNamesystem fsn = Mockito.spy(fsNamesystem);
// Make shouldPopulaeReplQueues return true
HAContext haContext = Mockito.mock(HAContext.class);
HAState haState = Mockito.mock(HAState.class);
Mockito.when(haContext.getState()).thenReturn(haState);
Mockito.when(haState.shouldPopulateReplQueues()).thenReturn(true);
Whitebox.setInternalState(fsn, "haContext", haContext);
// Make NameNode.getNameNodeMetrics() not return null
NameNode.initMetrics(conf, NamenodeRole.NAMENODE);
fsn.enterSafeMode(false);
assertTrue("FSNamesystem didn't enter safemode", fsn.isInSafeMode());
assertTrue(
"Replication queues were being populated during very first " + "safemode",
!fsn.isPopulatingReplQueues());
fsn.leaveSafeMode();
assertTrue("FSNamesystem didn't leave safemode", !fsn.isInSafeMode());
assertTrue(
"Replication queues weren't being populated even after leaving " + "safemode",
fsn.isPopulatingReplQueues());
fsn.enterSafeMode(false);
assertTrue("FSNamesystem didn't enter safemode", fsn.isInSafeMode());
assertTrue(
"Replication queues weren't being populated after entering " + "safemode 2nd time",
fsn.isPopulatingReplQueues());
}