Examples of org.apache.flume.Transaction.begin()

org.apache.flume.Transaction.begin()

Starts a transaction boundary for the current channel operation. If a transaction is already in progress, this method will join that transaction using reference counting.

Note: For every invocation of this method there must be a corresponding invocation of {@linkplain #close()} method. Failureto ensure this can lead to dangling transactions and unpredictable results.

    channel.put(EventBuilder.withBody(eventBody));
    tx.rollback();
    tx.close();


    tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    tx.commit();
    tx.close();

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    Configurables.configure(channel,  context);


    byte[] eventBody = new byte[405];


    Transaction tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    tx.commit();
    tx.close();
    channel.stop();
    parms.put("byteCapacity", "1500");

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    parms.put("byteCapacity", "1500");
    context.putAll(parms);
    Configurables.configure(channel,  context);
    channel.start();
    tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    try {
      channel.put(EventBuilder.withBody(eventBody));
      tx.commit();
      Assert.fail();

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    parms.put("byteCapacityBufferPercentage", "20");
    context.putAll(parms);
    Configurables.configure(channel,  context);
    channel.start();
    tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    tx.commit();
    tx.close();
    channel.stop();

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    Assert.assertTrue(LifecycleController.waitForOneOf(sink,
        LifecycleState.START_OR_ERROR, 5000));


    Transaction transaction = channel.getTransaction();


    transaction.begin();
    for (int i = 0; i < 10; i++) {
      channel.put(event);
    }
    transaction.commit();
    transaction.close();

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    parms.put("byteCapacity", "300");
    context.putAll(parms);
    Configurables.configure(channel,  context);
    channel.start();
    tx = channel.getTransaction();
    tx.begin();
    try {
      for(int i = 0; i < 2; i++) {
        channel.put(EventBuilder.withBody(eventBody));
      }
      tx.commit();

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    parms.put("byteCapacity", "3300");
    context.putAll(parms);
    Configurables.configure(channel,  context);
    channel.start();
    tx = channel.getTransaction();
    tx.begin();


    try {
      for(int i = 0; i < 15; i++) {
        channel.put(EventBuilder.withBody(eventBody));
      }

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    sink.start();
    Assert.assertTrue(LifecycleController.waitForOneOf(sink,
        LifecycleState.START_OR_ERROR, 5000));


    Transaction txn = channel.getTransaction();
    txn.begin();
    for (int i = 0; i < 4; i++) {
      channel.put(event);
    }
    txn.commit();
    txn.close();

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    parms.put("byteCapacity", "4000");
    context.putAll(parms);
    Configurables.configure(channel,  context);
    channel.start();
    tx = channel.getTransaction();
    tx.begin();


    try {
      for(int i = 0; i < 25; i++) {
        channel.put(EventBuilder.withBody(eventBody));
      }

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    source.start();
    Thread.sleep(2000);
    Transaction transaction = channel.getTransaction();


    transaction.begin();
    Event event;


    FileOutputStream outputStream = new FileOutputStream(ouputFile);


    while ((event = channel.take()) != null) {

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