Package org.apache.hadoop.hdfs.server.namenode

Examples of org.apache.hadoop.hdfs.server.namenode.EditLogOutputStream

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      NamespaceInfo nsi = newNSInfo();
      BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf,
          BKJMUtil.createJournalURI("/hdfsjournal-allbookiefailure"),
          nsi);
      bkjm.format(nsi);
      EditLogOutputStream out = bkjm.startLogSegment(txid,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);

      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,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
      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 {
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      BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf,
          BKJMUtil.createJournalURI("/hdfsjournal-onebookiefailure"),
          nsi);
      bkjm.format(nsi);

      EditLogOutputStream out = bkjm.startLogSegment(txid,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
      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) {
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    NamespaceInfo nsi = newNSInfo();
    BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, uri,
                                                                 nsi);
    bkjm.format(nsi);

    EditLogOutputStream out = bkjm.startLogSegment(1,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);;
    for (long i = 1; i <= 100; i++) {
      FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
      op.setTransactionId(i);
      out.write(op);
    }
    out.close();
    bkjm.finalizeLogSegment(1, 100);

    out = bkjm.startLogSegment(101,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    out.close();
    bkjm.close();
    String inprogressZNode = bkjm.inprogressZNode(101);
    zkc.setData(inprogressZNode, new byte[0], -1);

    bkjm = new BookKeeperJournalManager(conf, uri, nsi);
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    NamespaceInfo nsi = newNSInfo();
    BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, uri,
                                                                 nsi);
    bkjm.format(nsi);

    EditLogOutputStream out = bkjm.startLogSegment(1,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);;
    for (long i = 1; i <= 100; i++) {
      FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
      op.setTransactionId(i);
      out.write(op);
    }
    out.close();
    bkjm.finalizeLogSegment(1, 100);

    out = bkjm.startLogSegment(101,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    out.close();
    bkjm.close();

    String inprogressZNode = bkjm.inprogressZNode(101);
    zkc.setData(inprogressZNode, "WholeLottaJunk".getBytes(), -1);
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    NamespaceInfo nsi = newNSInfo();
    BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, uri,
                                                                 nsi);
    bkjm.format(nsi);

    EditLogOutputStream out = bkjm.startLogSegment(1,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);;
    for (long i = 1; i <= 100; i++) {
      FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
      op.setTransactionId(i);
      out.write(op);
    }
    out.close();
    bkjm.finalizeLogSegment(1, 100);

    out = bkjm.startLogSegment(101,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    out.close();
    bkjm.close();

    bkjm = new BookKeeperJournalManager(conf, uri, nsi);
    bkjm.recoverUnfinalizedSegments();
    out = bkjm.startLogSegment(101,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    for (long i = 1; i <= 100; i++) {
      FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
      op.setTransactionId(i);
      out.write(op);
    }
    out.close();
    bkjm.finalizeLogSegment(101, 200);

    bkjm.close();
  }
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    NamespaceInfo nsi = newNSInfo();
    BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, uri,
                                                                 nsi);
    bkjm.format(nsi);

    EditLogOutputStream out = bkjm.startLogSegment(1,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);;
    for (long i = 1; i <= 100; i++) {
      FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
      op.setTransactionId(i);
      out.write(op);
    }
    out.close();
    bkjm.close();

    String inprogressZNode = bkjm.inprogressZNode(1);
    String finalizedZNode = bkjm.finalizedLedgerZNode(1, 100);
    assertNotNull("inprogress znode doesn't exist", zkc.exists(inprogressZNode,
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  }

  private String startAndFinalizeLogSegment(BookKeeperJournalManager bkjm,
      int startTxid, int endTxid) throws IOException, KeeperException,
      InterruptedException {
    EditLogOutputStream out = bkjm.startLogSegment(startTxid,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    for (long i = startTxid; i <= endTxid; i++) {
      FSEditLogOp op = FSEditLogTestUtil.getNoOpInstance();
      op.setTransactionId(i);
      out.write(op);
    }
    out.close();
    // finalize the inprogress_1 log segment.
    bkjm.finalizeLogSegment(startTxid, endTxid);
    String zkpath1 = bkjm.finalizedLedgerZNode(startTxid, endTxid);
    assertNotNull(zkc.exists(zkpath1, false));
    assertNull(zkc.exists(bkjm.inprogressZNode(startTxid), false));
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  }

  public static EditLogOutputStream writeSegment(MiniJournalCluster cluster,
      QuorumJournalManager qjm, long startTxId, int numTxns,
      boolean finalize) throws IOException {
    EditLogOutputStream stm = qjm.startLogSegment(startTxId,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    // Should create in-progress
    assertExistsInQuorum(cluster,
        NNStorage.getInProgressEditsFileName(startTxId));
   
    writeTxns(stm, startTxId, numTxns);
    if (finalize) {
      stm.close();
      qjm.finalizeLogSegment(startTxId, startTxId + numTxns - 1);
      return null;
    } else {
      return stm;
    }
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      QuorumJournalManager qjm, long txid, int numTxns, Holder<Throwable> thrown) {
   
    long firstTxId = txid;
    long lastAcked = txid - 1;
    try {
      EditLogOutputStream stm = qjm.startLogSegment(txid,
          NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
     
      for (int i = 0; i < numTxns; i++) {
        QJMTestUtil.writeTxns(stm, txid++, 1);
        lastAcked++;
      }
     
      stm.close();
      qjm.finalizeLogSegment(firstTxId, lastAcked);
    } catch (Throwable t) {
      thrown.held = t;
    }
    return lastAcked;
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  @Test
  public void testCrashAtBeginningOfSegment() throws Exception {
    writeSegment(cluster, qjm, 1, 3, true);
    waitForAllPendingCalls(qjm.getLoggerSetForTests());
   
    EditLogOutputStream stm = qjm.startLogSegment(4,
        NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
    try {
      waitForAllPendingCalls(qjm.getLoggerSetForTests());
    } finally {
      stm.abort();
    }
   
   
    // Make a new QJM
    qjm = closeLater(new QuorumJournalManager(
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Related Classes of org.apache.hadoop.hdfs.server.namenode.EditLogOutputStream

  • org.apache.hadoop.contrib.bkjournal.TestBookKeeperJournalManager
  • org.apache.hadoop.hdfs.notifier.server.TestTransactionalEditLogReader
  • org.apache.hadoop.hdfs.qjournal.client.TestQJMRecovery
  • org.apache.hadoop.hdfs.qjournal.client.TestQJMWithFaults
  • org.apache.hadoop.hdfs.qjournal.client.TestQJMWriteRead
  • org.apache.hadoop.hdfs.qjournal.client.TestQuorumJournalManager
  • org.apache.hadoop.hdfs.qjournal.client.TestQuorumJournalManagerInputStream
  • org.apache.hadoop.hdfs.qjournal.client.TestQuorumJournalManagerUnit
  • org.apache.hadoop.hdfs.qjournal.QJMTestUtil
  • org.apache.hadoop.hdfs.server.namenode.bookkeeper.TestBookKeeperJournalManager
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