Java FileTxnLog.read方法代碼示例

本文整理匯總了Java中org.apache.zookeeper.server.persistence.FileTxnLog.read方法的典型用法代碼示例。如果您正苦於以下問題：Java FileTxnLog.read方法的具體用法？Java FileTxnLog.read怎麽用？Java FileTxnLog.read使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.zookeeper.server.persistence.FileTxnLog的用法示例。

在下文中一共展示了FileTxnLog.read方法的10個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: testTruncationStreamReset

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
@Test
public void testTruncationStreamReset() throws Exception {
    File tmpdir = ClientBase.createTmpDir();
    FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
    ZKDatabase zkdb = new ZKDatabase(snaplog);

    for (int i = 1; i <= 100; i++) {
        append(zkdb, i);
    }

    zkdb.truncateLog(1);

    append(zkdb, 200);

    zkdb.close();

    // verify that the truncation and subsequent append were processed
    // correctly
    FileTxnLog txnlog = new FileTxnLog(new File(tmpdir, "version-2"));
    TxnIterator iter = txnlog.read(1);

    TxnHeader hdr = iter.getHeader();
    Record txn = iter.getTxn();
    Assert.assertEquals(1, hdr.getZxid());
    Assert.assertTrue(txn instanceof SetDataTxn);

    iter.next();

    hdr = iter.getHeader();
    txn = iter.getTxn();
    Assert.assertEquals(200, hdr.getZxid());
    Assert.assertTrue(txn instanceof SetDataTxn);
    iter.close();
    ClientBase.recursiveDelete(tmpdir);
}

開發者ID:maoling，項目名稱:fuck_zookeeper，代碼行數:36，代碼來源:TruncateTest.java

示例2: testTruncationStreamReset

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
@Test
public void testTruncationStreamReset() throws Exception {
    File tmpdir = ClientBase.createTmpDir();
    FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
    ZKDatabase zkdb = new ZKDatabase(snaplog);
    // make sure to snapshot, so that we have something there when
    // truncateLog reloads the db
    snaplog.save(zkdb.getDataTree(), zkdb.getSessionWithTimeOuts(), false);

    for (int i = 1; i <= 100; i++) {
        append(zkdb, i);
    }

    zkdb.truncateLog(1);

    append(zkdb, 200);

    zkdb.close();

    // verify that the truncation and subsequent append were processed
    // correctly
    FileTxnLog txnlog = new FileTxnLog(new File(tmpdir, "version-2"));
    TxnIterator iter = txnlog.read(1);

    TxnHeader hdr = iter.getHeader();
    Record txn = iter.getTxn();
    Assert.assertEquals(1, hdr.getZxid());
    Assert.assertTrue(txn instanceof SetDataTxn);

    iter.next();

    hdr = iter.getHeader();
    txn = iter.getTxn();
    Assert.assertEquals(200, hdr.getZxid());
    Assert.assertTrue(txn instanceof SetDataTxn);
    iter.close();
    ClientBase.recursiveDelete(tmpdir);
}

開發者ID:didichuxing2，項目名稱:https-github.com-apache-zookeeper，代碼行數:39，代碼來源:TruncateTest.java

示例3: testTruncationStreamReset

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
@Test
public void testTruncationStreamReset() throws Exception {
    File tmpdir = ClientBase.createTmpDir();
    FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
    ZKDatabase zkdb = new ZKDatabase(snaplog);

    for (int i = 1; i <= 100; i++) {
        append(zkdb, i);
    }

    zkdb.truncateLog(1);

    append(zkdb, 200);

    zkdb.close();

    // verify that the truncation and subsequent append were processed
    // correctly
    FileTxnLog txnlog = new FileTxnLog(new File(tmpdir, "version-2"));
    TxnIterator iter = txnlog.read(1);

    TxnHeader hdr = iter.getHeader();
    Record txn = iter.getTxn();
    Assert.assertEquals(1, hdr.getZxid());
    Assert.assertTrue(txn instanceof SetDataTxn);

    iter.next();

    hdr = iter.getHeader();
    txn = iter.getTxn();
    Assert.assertEquals(200, hdr.getZxid());
    Assert.assertTrue(txn instanceof SetDataTxn);
}

開發者ID:gerritjvv，項目名稱:bigstreams，代碼行數:34，代碼來源:TruncateTest.java

示例4: testLoad

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
 * test that all transactions from the Log are loaded, and only once
 * @throws Exception an exception might be thrown here
 */
@Test
public void testLoad() throws Exception {
    // setup a single server cluster
    File tmpDir = ClientBase.createTmpDir();
    ClientBase.setupTestEnv();
    ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
    SyncRequestProcessor.setSnapCount(100);
    final int PORT = Integer.parseInt(HOSTPORT.split(":")[1]);
    ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
    f.startup(zks);
    Assert.assertTrue("waiting for server being up ",
            ClientBase.waitForServerUp(HOSTPORT,CONNECTION_TIMEOUT));
    ZooKeeper zk = new ZooKeeper(HOSTPORT, CONNECTION_TIMEOUT, this);

    // generate some transactions that will get logged
    try {
        for (int i = 0; i< NUM_MESSAGES; i++) {
            zk.create("/invalidsnap-" + i, new byte[0], Ids.OPEN_ACL_UNSAFE,
                    CreateMode.PERSISTENT);
        }
    } finally {
        zk.close();
    }
    f.shutdown();
    Assert.assertTrue("waiting for server to shutdown",
            ClientBase.waitForServerDown(HOSTPORT, CONNECTION_TIMEOUT));

    // now verify that the FileTxnLog reads every transaction only once
    File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
    FileTxnLog txnLog = new FileTxnLog(logDir);

    TxnIterator itr = txnLog.read(0);
    long expectedZxid = 0;
    long lastZxid = 0;
    TxnHeader hdr;
    do {
        hdr = itr.getHeader();
        expectedZxid++;
        Assert.assertTrue("not the same transaction. lastZxid=" + lastZxid + ", zxid=" + hdr.getZxid(), lastZxid != hdr.getZxid());
        Assert.assertTrue("excepting next transaction. expected=" + expectedZxid + ", retreived=" + hdr.getZxid(), (hdr.getZxid() == expectedZxid));
        lastZxid = hdr.getZxid();
    }while(itr.next());
	
    Assert.assertTrue("processed all transactions. " + expectedZxid + " == " + TOTAL_TRANSACTIONS, (expectedZxid == TOTAL_TRANSACTIONS));
    zks.shutdown();
}

開發者ID:maoling，項目名稱:fuck_zookeeper，代碼行數:51，代碼來源:LoadFromLogTest.java

示例5: testLoad

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
 * test that all transactions from the Log are loaded, and only once
 * @throws Exception an exception might be thrown here
 */
@Test
public void testLoad() throws Exception {
    final String hostPort = HOST + PortAssignment.unique();
    // setup a single server cluster
    File tmpDir = ClientBase.createTmpDir();
    ClientBase.setupTestEnv();
    ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
    SyncRequestProcessor.setSnapCount(100);
    final int PORT = Integer.parseInt(hostPort.split(":")[1]);
    ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
    f.startup(zks);
    Assert.assertTrue("waiting for server being up ",
            ClientBase.waitForServerUp(hostPort,CONNECTION_TIMEOUT));
    ZooKeeper zk = ClientBase.createZKClient(hostPort);

    // generate some transactions that will get logged
    try {
        for (int i = 0; i< NUM_MESSAGES; i++) {
            zk.create("/invalidsnap-" + i, new byte[0], Ids.OPEN_ACL_UNSAFE,
                    CreateMode.PERSISTENT);
        }
    } finally {
        zk.close();
    }
    f.shutdown();
    Assert.assertTrue("waiting for server to shutdown",
            ClientBase.waitForServerDown(hostPort, CONNECTION_TIMEOUT));

    // now verify that the FileTxnLog reads every transaction only once
    File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
    FileTxnLog txnLog = new FileTxnLog(logDir);

    TxnIterator itr = txnLog.read(0);
    
    // Check that storage space return some value
    FileTxnIterator fileItr = (FileTxnIterator) itr;
    long storageSize = fileItr.getStorageSize();
    LOG.info("Txnlog size: " + storageSize + " bytes");
    Assert.assertTrue("Storage size is greater than zero ",
            (storageSize > 0));
    
    long expectedZxid = 0;
    long lastZxid = 0;
    TxnHeader hdr;
    do {
        hdr = itr.getHeader();
        expectedZxid++;
        Assert.assertTrue("not the same transaction. lastZxid=" + lastZxid + ", zxid=" + hdr.getZxid(), lastZxid != hdr.getZxid());
        Assert.assertTrue("excepting next transaction. expected=" + expectedZxid + ", retreived=" + hdr.getZxid(), (hdr.getZxid() == expectedZxid));
        lastZxid = hdr.getZxid();
    }while(itr.next());

    Assert.assertTrue("processed all transactions. " + expectedZxid + " == " + TOTAL_TRANSACTIONS, (expectedZxid == TOTAL_TRANSACTIONS));
    zks.shutdown();
}

開發者ID:didichuxing2，項目名稱:https-github.com-apache-zookeeper，代碼行數:60，代碼來源:LoadFromLogTest.java

示例6: testLoadFailure

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
 * test that we fail to load txnlog of a request zxid that is older
 * than what exist on disk
 * @throws Exception an exception might be thrown here
 */
@Test
public void testLoadFailure() throws Exception {
    final String hostPort = HOST + PortAssignment.unique();
    // setup a single server cluster
    File tmpDir = ClientBase.createTmpDir();
    ClientBase.setupTestEnv();
    ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
    // So we have at least 4 logs
    SyncRequestProcessor.setSnapCount(50);
    final int PORT = Integer.parseInt(hostPort.split(":")[1]);
    ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
    f.startup(zks);
    Assert.assertTrue("waiting for server being up ",
            ClientBase.waitForServerUp(hostPort,CONNECTION_TIMEOUT));
    ZooKeeper zk = ClientBase.createZKClient(hostPort);

    // generate some transactions that will get logged
    try {
        for (int i = 0; i< NUM_MESSAGES; i++) {
            zk.create("/data-", new byte[0], Ids.OPEN_ACL_UNSAFE,
                    CreateMode.PERSISTENT_SEQUENTIAL);
        }
    } finally {
        zk.close();
    }
    f.shutdown();
    Assert.assertTrue("waiting for server to shutdown",
            ClientBase.waitForServerDown(hostPort, CONNECTION_TIMEOUT));

    File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
    File[] logFiles = FileTxnLog.getLogFiles(logDir.listFiles(), 0);
    // Verify that we have at least 4 txnlog
    Assert.assertTrue(logFiles.length > 4);
    // Delete the first log file, so we will fail to read it back from disk
    Assert.assertTrue("delete the first log file", logFiles[0].delete());

    // Find zxid for the second log
    long secondStartZxid = Util.getZxidFromName(logFiles[1].getName(), "log");

    FileTxnLog txnLog = new FileTxnLog(logDir);
    TxnIterator itr = txnLog.read(1, false);

    // Oldest log is already remove, so this should point to the start of
    // of zxid on the second log
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());

    itr = txnLog.read(secondStartZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());
    Assert.assertTrue(itr.next());

    // Trying to get a second txn on second txnlog give us the
    // the start of second log, since the first one is removed
    long nextZxid = itr.getHeader().getZxid();

    itr = txnLog.read(nextZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());

    // Trying to get a first txn on the third give us the
    // the start of second log, since the first one is removed
    long thirdStartZxid = Util.getZxidFromName(logFiles[2].getName(), "log");
    itr = txnLog.read(thirdStartZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());
    Assert.assertTrue(itr.next());

    nextZxid = itr.getHeader().getZxid();
    itr = txnLog.read(nextZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());

}

開發者ID:didichuxing2，項目名稱:https-github.com-apache-zookeeper，代碼行數:75，代碼來源:LoadFromLogTest.java

示例7: testLoad

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
 * test that all transactions from the Log are loaded, and only once
 * @throws Exception an exception might be thrown here
 */
@Test
public void testLoad() throws Exception {
    // setup a single server cluster
    File tmpDir = ClientBase.createTmpDir();
    ClientBase.setupTestEnv();
    ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
    SyncRequestProcessor.setSnapCount(100);
    final int PORT = Integer.parseInt(HOSTPORT.split(":")[1]);
    ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
    f.startup(zks);
    Assert.assertTrue("waiting for server being up ",
            ClientBase.waitForServerUp(HOSTPORT,CONNECTION_TIMEOUT));
    ZooKeeper zk = new ZooKeeper(HOSTPORT, CONNECTION_TIMEOUT, this);

    // generate some transactions that will get logged
    try {
        for (int i = 0; i< NUM_MESSAGES; i++) {
            zk.create("/invalidsnap-" + i, new byte[0], Ids.OPEN_ACL_UNSAFE,
                    CreateMode.PERSISTENT);
        }
    } finally {
        zk.close();
    }
    f.shutdown();
    Assert.assertTrue("waiting for server to shutdown",
            ClientBase.waitForServerDown(HOSTPORT, CONNECTION_TIMEOUT));

    // now verify that the FileTxnLog reads every transaction only once
    File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
    FileTxnLog txnLog = new FileTxnLog(logDir);

    TxnIterator itr = txnLog.read(0);
    long expectedZxid = 0;
    long lastZxid = 0;
    TxnHeader hdr;
    do {
        hdr = itr.getHeader();
        expectedZxid++;
        Assert.assertTrue("not the same transaction. lastZxid=" + lastZxid + ", zxid=" + hdr.getZxid(), lastZxid != hdr.getZxid());
        Assert.assertTrue("excepting next transaction. expected=" + expectedZxid + ", retreived=" + hdr.getZxid(), (hdr.getZxid() == expectedZxid));
        lastZxid = hdr.getZxid();
    }while(itr.next());
	
    Assert.assertTrue("processed all transactions. " + expectedZxid + " == " + TOTAL_TRANSACTIONS, (expectedZxid == TOTAL_TRANSACTIONS));
}

開發者ID:gerritjvv，項目名稱:bigstreams，代碼行數:50，代碼來源:LoadFromLogTest.java

示例8: testLoad

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
    * test that all transactions from the Log are loaded, and only once
    * @throws Exception an exception might be thrown here
    */
   @Test
   public void testLoad() throws Exception {
       // setup a single server cluster
       File tmpDir = ClientBase.createTmpDir();
       ClientBase.setupTestEnv();
       ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
       SyncRequestProcessor.setSnapCount(100);
       final int PORT = Integer.parseInt(HOSTPORT.split(":")[1]);
       ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
       f.startup(zks);
       Assert.assertTrue("waiting for server being up ",
               ClientBase.waitForServerUp(HOSTPORT,CONNECTION_TIMEOUT));
       ZooKeeper zk = new ZooKeeper(HOSTPORT, CONNECTION_TIMEOUT, this);

       // generate some transactions that will get logged
       try {
           for (int i = 0; i< NUM_MESSAGES; i++) {
               zk.create("/invalidsnap-" + i, new byte[0], Ids.OPEN_ACL_UNSAFE,
                       CreateMode.PERSISTENT);
           }
       } finally {
           zk.close();
       }
       f.shutdown();
       Assert.assertTrue("waiting for server to shutdown",
               ClientBase.waitForServerDown(HOSTPORT, CONNECTION_TIMEOUT));

       // now verify that the FileTxnLog reads every transaction only once
File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
FileTxnLog txnLog = new FileTxnLog(logDir);

       TxnIterator itr = txnLog.read(0);
       long expectedZxid = 0;
       long lastZxid = 0;
       TxnHeader hdr;
       do {
           hdr = itr.getHeader();
           expectedZxid++;
           Assert.assertTrue("not the same transaction. lastZxid=" + lastZxid + ", zxid=" + hdr.getZxid(), lastZxid != hdr.getZxid());
           Assert.assertTrue("excepting next transaction. expected=" + expectedZxid + ", retreived=" + hdr.getZxid(), (hdr.getZxid() == expectedZxid));
           lastZxid = hdr.getZxid();
       }while(itr.next());

       Assert.assertTrue("processed all transactions. " + expectedZxid + " == " + TOTAL_TRANSACTIONS, (expectedZxid == TOTAL_TRANSACTIONS));
   }

開發者ID:gerritjvv，項目名稱:bigstreams，代碼行數:50，代碼來源:LoadFromLogTest.java

示例9: testLoad

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
 * test that all transactions from the Log are loaded, and only once
 * @throws Exception an exception might be thrown here
 */
@Test
public void testLoad() throws Exception {
    // setup a single server cluster
    File tmpDir = ClientBase.createTmpDir();
    ClientBase.setupTestEnv();
    ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
    SyncRequestProcessor.setSnapCount(100);
    final int PORT = Integer.parseInt(HOSTPORT.split(":")[1]);
    ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
    f.startup(zks);
    Assert.assertTrue("waiting for server being up ",
            ClientBase.waitForServerUp(HOSTPORT,CONNECTION_TIMEOUT));
    ZooKeeper zk = new ZooKeeper(HOSTPORT, CONNECTION_TIMEOUT, this);

    // generate some transactions that will get logged
    try {
        for (int i = 0; i< NUM_MESSAGES; i++) {
            zk.create("/invalidsnap-" + i, new byte[0], Ids.OPEN_ACL_UNSAFE,
                    CreateMode.PERSISTENT);
        }
    } finally {
        zk.close();
    }
    f.shutdown();
    Assert.assertTrue("waiting for server to shutdown",
            ClientBase.waitForServerDown(HOSTPORT, CONNECTION_TIMEOUT));

    // now verify that the FileTxnLog reads every transaction only once
    File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
    FileTxnLog txnLog = new FileTxnLog(logDir);

    TxnIterator itr = txnLog.read(0);
    
    // Check that storage space return some value
    FileTxnIterator fileItr = (FileTxnIterator) itr;
    long storageSize = fileItr.getStorageSize();
    LOG.info("Txnlog size: " + storageSize + " bytes");
    Assert.assertTrue("Storage size is greater than zero ",
            (storageSize > 0));
    
    long expectedZxid = 0;
    long lastZxid = 0;
    TxnHeader hdr;
    do {
        hdr = itr.getHeader();
        expectedZxid++;
        Assert.assertTrue("not the same transaction. lastZxid=" + lastZxid + ", zxid=" + hdr.getZxid(), lastZxid != hdr.getZxid());
        Assert.assertTrue("excepting next transaction. expected=" + expectedZxid + ", retreived=" + hdr.getZxid(), (hdr.getZxid() == expectedZxid));
        lastZxid = hdr.getZxid();
    }while(itr.next());

    Assert.assertTrue("processed all transactions. " + expectedZxid + " == " + TOTAL_TRANSACTIONS, (expectedZxid == TOTAL_TRANSACTIONS));
    zks.shutdown();
}

開發者ID:sereca，項目名稱:SecureKeeper，代碼行數:59，代碼來源:LoadFromLogTest.java

示例10: testLoadFailure

import org.apache.zookeeper.server.persistence.FileTxnLog; //導入方法依賴的package包/類
/**
 * test that we fail to load txnlog of a request zxid that is older
 * than what exist on disk
 * @throws Exception an exception might be thrown here
 */
@Test
public void testLoadFailure() throws Exception {
    // setup a single server cluster
    File tmpDir = ClientBase.createTmpDir();
    ClientBase.setupTestEnv();
    ZooKeeperServer zks = new ZooKeeperServer(tmpDir, tmpDir, 3000);
    // So we have at least 4 logs
    SyncRequestProcessor.setSnapCount(50);
    final int PORT = Integer.parseInt(HOSTPORT.split(":")[1]);
    ServerCnxnFactory f = ServerCnxnFactory.createFactory(PORT, -1);
    f.startup(zks);
    Assert.assertTrue("waiting for server being up ",
            ClientBase.waitForServerUp(HOSTPORT,CONNECTION_TIMEOUT));
    ZooKeeper zk = new ZooKeeper(HOSTPORT, CONNECTION_TIMEOUT, this);

    // generate some transactions that will get logged
    try {
        for (int i = 0; i< NUM_MESSAGES; i++) {
            zk.create("/data-", new byte[0], Ids.OPEN_ACL_UNSAFE,
                    CreateMode.PERSISTENT_SEQUENTIAL);
        }
    } finally {
        zk.close();
    }
    f.shutdown();
    Assert.assertTrue("waiting for server to shutdown",
            ClientBase.waitForServerDown(HOSTPORT, CONNECTION_TIMEOUT));

    File logDir = new File(tmpDir, FileTxnSnapLog.version + FileTxnSnapLog.VERSION);
    File[] logFiles = FileTxnLog.getLogFiles(logDir.listFiles(), 0);
    // Verify that we have at least 4 txnlog
    Assert.assertTrue(logFiles.length > 4);
    // Delete the first log file, so we will fail to read it back from disk
    Assert.assertTrue("delete the first log file", logFiles[0].delete());

    // Find zxid for the second log
    long secondStartZxid = Util.getZxidFromName(logFiles[1].getName(), "log");

    FileTxnLog txnLog = new FileTxnLog(logDir);
    TxnIterator itr = txnLog.read(1, false);

    // Oldest log is already remove, so this should point to the start of
    // of zxid on the second log
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());

    itr = txnLog.read(secondStartZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());
    Assert.assertTrue(itr.next());

    // Trying to get a second txn on second txnlog give us the
    // the start of second log, since the first one is removed
    long nextZxid = itr.getHeader().getZxid();

    itr = txnLog.read(nextZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());

    // Trying to get a first txn on the third give us the
    // the start of second log, since the first one is removed
    long thirdStartZxid = Util.getZxidFromName(logFiles[2].getName(), "log");
    itr = txnLog.read(thirdStartZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());
    Assert.assertTrue(itr.next());

    nextZxid = itr.getHeader().getZxid();
    itr = txnLog.read(nextZxid, false);
    Assert.assertEquals(secondStartZxid, itr.getHeader().getZxid());

}

開發者ID:sereca，項目名稱:SecureKeeper，代碼行數:74，代碼來源:LoadFromLogTest.java

注：本文中的org.apache.zookeeper.server.persistence.FileTxnLog.read方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。