Examples of org.apache.bookkeeper.proto.BookieServer$DeathWatcher

org.apache.bookkeeper.proto.BookieServer
A thread to watch whether bookie & nioserver is still alive

    /**
     * Test the vote is deleting from the ZooKeeper during shutdown.
     */
    @Test(timeout=60000)
    public void testShutdown() throws Exception {
        BookieServer auditor = verifyAuditor();
        shutdownBookie(auditor);


        // waiting for new auditor
        BookieServer newAuditor = waitForNewAuditor(auditor);
        Assert.assertNotSame(
                "Auditor re-election is not happened for auditor failure!",
                auditor, newAuditor);
        int indexOfDownBookie = bs.indexOf(auditor);
        bs.remove(indexOfDownBookie);

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     * Test restart of the previous Auditor bookie shouldn't initiate
     * re-election and should create new vote after restarting.
     */
    @Test(timeout=60000)
    public void testRestartAuditorBookieAfterCrashing() throws Exception {
        BookieServer auditor = verifyAuditor();


        shutdownBookie(auditor);
        String addr = StringUtils.addrToString(auditor.getLocalAddress());


        // restarting Bookie with same configurations.
        int indexOfDownBookie = bs.indexOf(auditor);
        ServerConfiguration serverConfiguration = bsConfs
                .get(indexOfDownBookie);
        bs.remove(indexOfDownBookie);
        bsConfs.remove(indexOfDownBookie);
        tmpDirs.remove(indexOfDownBookie);
        auditorElectors.remove(addr);
        startBookie(serverConfiguration);
        // starting corresponding auditor elector


        LOG.debug("Performing Auditor Election:" + addr);
        startAuditorElector(addr);


        // waiting for new auditor to come
        BookieServer newAuditor = waitForNewAuditor(auditor);
        Assert.assertNotSame(
                "Auditor re-election is not happened for auditor failure!",
                auditor, newAuditor);
        Assert.assertFalse("No relection after old auditor rejoins", auditor
                .getLocalAddress().getPort() == newAuditor.getLocalAddress()
                .getPort());
    }

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        auditorElectors.get(addr).shutdown();
    }


    private BookieServer waitForNewAuditor(BookieServer auditor)
            throws InterruptedException, KeeperException {
        BookieServer newAuditor = null;
        int retryCount = 8;
        while (retryCount > 0) {
            List<BookieServer> auditors = getAuditorBookie();
            if (auditors.size() > 0) {
                newAuditor = auditors.get(0);

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        }
    }


    private String shutdownBookie(int bkShutdownIndex) throws IOException,
            InterruptedException {
        BookieServer bkServer = bs.get(bkShutdownIndex);
        String bookieAddr = StringUtils.addrToString(bkServer.getLocalAddress());
        LOG.debug("Shutting down bookie:" + bookieAddr);
        killBookie(bkShutdownIndex);
        auditorElectors.get(bookieAddr).shutdown();
        auditorElectors.remove(bookieAddr);
        return bookieAddr;

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    }


    public void tearDownOneBookieServer() throws Exception {
        Random r = new Random();
        int bi = r.nextInt(bookiesList.size());
        BookieServer bs = bookiesList.get(bi);
        bs.shutdown();
        bookiesList.remove(bi);
        bkConfsList.remove(bi);
    }

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     * @param conf
     *            Server Configuration Object
     *
     */
    private BookieServer startBookie(ServerConfiguration conf) throws Exception {
        BookieServer server = new TestBookieServer(conf);
        server.start();


        int port = conf.getBookiePort();
        while(zk.exists("/ledgers/available/" + InetAddress.getLocalHost().getHostAddress() + ":" + port, false) == null) {
            Thread.sleep(500);
        }

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            bsConfs[i].setZkServers(InetAddress.getLocalHost().getHostAddress() + ":"
                                  + ZooKeeperDefaultPort);
            bsConfs[i].setJournalDirName(tmpDirs[i].getPath());
            bsConfs[i].setLedgerDirNames(new String[] { tmpDirs[i].getPath() });


            bs[i] = new BookieServer(bsConfs[i]);
            bs[i].start();
        }
    }

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   * writes the bookkeeper will fail. Test that when once again
   * an ensemble is available, it can continue to write.
   */
  @Test
  public void testAllBookieFailure() throws Exception {
    BookieServer bookieToFail = bkutil.newBookie();
    BookieServer replacementBookie = null;


    try {
      int ensembleSize = numBookies + 1;
      assertEquals("New bookie didn't start",
                   ensembleSize, bkutil.checkBookiesUp(ensembleSize, 10));


      // ensure that the journal manager has to use all bookies,
      // so that a failure will fail the journal manager
      Configuration conf = new Configuration();
      conf.setInt(BookKeeperJournalManager.BKJM_BOOKKEEPER_ENSEMBLE_SIZE,
                  ensembleSize);
      conf.setInt(BookKeeperJournalManager.BKJM_BOOKKEEPER_QUORUM_SIZE,
                  ensembleSize);
      long txid = 1;
      NamespaceInfo nsi = newNSInfo();
      BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf,
          BKJMUtil.createJournalURI("/hdfsjournal-allbookiefailure"),
          nsi);
      bkjm.format(nsi);
      EditLogOutputStream out = bkjm.startLogSegment(txid);


      for (long i = 1 ; i <= 3; i++) {
        FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
        op.setTransactionId(txid++);
        out.write(op);
      }
      out.setReadyToFlush();
      out.flush();
      bookieToFail.shutdown();
      assertEquals("New bookie didn't die",
                   numBookies, bkutil.checkBookiesUp(numBookies, 10));


      try {
        for (long i = 1 ; i <= 3; i++) {
          FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
          op.setTransactionId(txid++);
          out.write(op);
        }
        out.setReadyToFlush();
        out.flush();
        fail("should not get to this stage");
      } catch (IOException ioe) {
        LOG.debug("Error writing to bookkeeper", ioe);
        assertTrue("Invalid exception message",
                   ioe.getMessage().contains("Failed to write to bookkeeper"));
      }
      replacementBookie = bkutil.newBookie();


      assertEquals("New bookie didn't start",
                   numBookies+1, bkutil.checkBookiesUp(numBookies+1, 10));
      bkjm.recoverUnfinalizedSegments();
      out = bkjm.startLogSegment(txid);
      for (long i = 1 ; i <= 3; i++) {
        FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
        op.setTransactionId(txid++);
        out.write(op);
      }


      out.setReadyToFlush();
      out.flush();


    } catch (Exception e) {
      LOG.error("Exception in test", e);
      throw e;
    } finally {
      if (replacementBookie != null) {
        replacementBookie.shutdown();
      }
      bookieToFail.shutdown();


      if (bkutil.checkBookiesUp(numBookies, 30) != numBookies) {
        LOG.warn("Not all bookies from this test shut down, expect errors");

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   * failure of a bookie. This should be handled transparently
   * by bookkeeper.
   */
  @Test
  public void testOneBookieFailure() throws Exception {
    BookieServer bookieToFail = bkutil.newBookie();
    BookieServer replacementBookie = null;


    try {
      int ensembleSize = numBookies + 1;
      assertEquals("New bookie didn't start",
                   ensembleSize, bkutil.checkBookiesUp(ensembleSize, 10));


      // ensure that the journal manager has to use all bookies,
      // so that a failure will fail the journal manager
      Configuration conf = new Configuration();
      conf.setInt(BookKeeperJournalManager.BKJM_BOOKKEEPER_ENSEMBLE_SIZE,
                  ensembleSize);
      conf.setInt(BookKeeperJournalManager.BKJM_BOOKKEEPER_QUORUM_SIZE,
                  ensembleSize);
      long txid = 1;


      NamespaceInfo nsi = newNSInfo();
      BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf,
          BKJMUtil.createJournalURI("/hdfsjournal-onebookiefailure"),
          nsi);
      bkjm.format(nsi);


      EditLogOutputStream out = bkjm.startLogSegment(txid);
      for (long i = 1 ; i <= 3; i++) {
        FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
        op.setTransactionId(txid++);
        out.write(op);
      }
      out.setReadyToFlush();
      out.flush();


      replacementBookie = bkutil.newBookie();
      assertEquals("replacement bookie didn't start",
                   ensembleSize+1, bkutil.checkBookiesUp(ensembleSize+1, 10));
      bookieToFail.shutdown();
      assertEquals("New bookie didn't die",
                   ensembleSize, bkutil.checkBookiesUp(ensembleSize, 10));


      for (long i = 1 ; i <= 3; i++) {
        FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
        op.setTransactionId(txid++);
        out.write(op);
      }
      out.setReadyToFlush();
      out.flush();
    } catch (Exception e) {
      LOG.error("Exception in test", e);
      throw e;
    } finally {
      if (replacementBookie != null) {
        replacementBookie.shutdown();
      }
      bookieToFail.shutdown();


      if (bkutil.checkBookiesUp(numBookies, 30) != numBookies) {
        LOG.warn("Not all bookies from this test shut down, expect errors");

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   * available on the standby.
   */
  @Test
  public void testFailoverWithFailingBKCluster() throws Exception {
    int ensembleSize = numBookies + 1;
    BookieServer newBookie = bkutil.newBookie();
    assertEquals("New bookie didn't start",
                 ensembleSize, bkutil.checkBookiesUp(ensembleSize, 10));


    BookieServer replacementBookie = null;


    MiniDFSCluster cluster = null;


    try {
      Configuration conf = new Configuration();
      conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
      conf.set(DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY,
               BKJMUtil.createJournalURI("/hotfailoverWithFail").toString());
      conf.setInt(BookKeeperJournalManager.BKJM_BOOKKEEPER_ENSEMBLE_SIZE,
                  ensembleSize);
      conf.setInt(BookKeeperJournalManager.BKJM_BOOKKEEPER_QUORUM_SIZE,
                  ensembleSize);
      BKJMUtil.addJournalManagerDefinition(conf);


      cluster = new MiniDFSCluster.Builder(conf)
        .nnTopology(MiniDFSNNTopology.simpleHATopology())
        .numDataNodes(0)
        .manageNameDfsSharedDirs(false)
        .checkExitOnShutdown(false)
        .build();
      NameNode nn1 = cluster.getNameNode(0);
      NameNode nn2 = cluster.getNameNode(1);


      cluster.waitActive();
      cluster.transitionToActive(0);


      Path p1 = new Path("/testBKJMFailingBKCluster1");
      Path p2 = new Path("/testBKJMFailingBKCluster2");


      FileSystem fs = HATestUtil.configureFailoverFs(cluster, conf);


      fs.mkdirs(p1);
      newBookie.shutdown(); // will take down shared storage
      assertEquals("New bookie didn't stop",
                   numBookies, bkutil.checkBookiesUp(numBookies, 10));


      try {
        fs.mkdirs(p2);
        fail("mkdirs should result in the NN exiting");
      } catch (RemoteException re) {
        assertTrue(re.getClassName().contains("ExitException"));
      }
      cluster.shutdownNameNode(0);


      try {
        cluster.transitionToActive(1);
        fail("Shouldn't have been able to transition with bookies down");
      } catch (ExitException ee) {
        assertTrue("Should shutdown due to required journal failure",
            ee.getMessage().contains(
                "starting log segment 3 failed for required journal"));
      }


      replacementBookie = bkutil.newBookie();
      assertEquals("Replacement bookie didn't start",
                   ensembleSize, bkutil.checkBookiesUp(ensembleSize, 10));
      cluster.transitionToActive(1); // should work fine now


      assertTrue(fs.exists(p1));
      assertFalse(fs.exists(p2));
    } finally {
      newBookie.shutdown();
      if (replacementBookie != null) {
        replacementBookie.shutdown();
      }


      if (cluster != null) {
        cluster.shutdown();
      }

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org.apache.bookkeeper.bookie.Bookie

org.apache.bookkeeper.bookie.BookieInitializationTest

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