/**
* Tests that offsets are properly committed to ZooKeeper and initial offsets are read from
* ZooKeeper.
*
* <p>This test is only applicable if the Flink Kafka Consumer uses the ZooKeeperOffsetHandler.
*/
@Test(timeout = 60000)
public void testOffsetInZookeeper() throws Exception {
final int parallelism = 3;
// write a sequence from 0 to 99 to each of the 3 partitions.
final String topicName = writeSequence("testOffsetInZK", 100, parallelism, 1);
StreamExecutionEnvironment env1 =
StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
env1.getConfig().disableSysoutLogging();
env1.enableCheckpointing(50);
env1.getConfig().setRestartStrategy(RestartStrategies.noRestart());
env1.setParallelism(parallelism);
StreamExecutionEnvironment env2 =
StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
env2.getConfig().disableSysoutLogging();
env2.enableCheckpointing(50);
env2.getConfig().setRestartStrategy(RestartStrategies.noRestart());
env2.setParallelism(parallelism);
readSequence(env1, standardProps, parallelism, topicName, 100, 0);
CuratorFramework curatorClient = ((KafkaTestEnvironmentImpl) kafkaServer).createCuratorClient();
Long o1 =
ZookeeperOffsetHandler.getOffsetFromZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topicName, 0);
Long o2 =
ZookeeperOffsetHandler.getOffsetFromZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topicName, 1);
Long o3 =
ZookeeperOffsetHandler.getOffsetFromZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topicName, 2);
LOG.info("Got final offsets from zookeeper o1={}, o2={}, o3={}", o1, o2, o3);
assertTrue(o1 == null || (o1 >= 0 && o1 <= 100));
assertTrue(o2 == null || (o2 >= 0 && o2 <= 100));
assertTrue(o3 == null || (o3 >= 0 && o3 <= 100));
LOG.info("Manipulating offsets");
// set the offset to 50 for the three partitions
ZookeeperOffsetHandler.setOffsetInZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topicName, 0, 49);
ZookeeperOffsetHandler.setOffsetInZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topicName, 1, 49);
ZookeeperOffsetHandler.setOffsetInZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topicName, 2, 49);
curatorClient.close();
// create new env
readSequence(env2, standardProps, parallelism, topicName, 50, 50);
deleteTestTopic(topicName);
}
@Test(timeout = 60000)
public void testInvalidOffset() throws Exception {
final String topic = "invalidOffsetTopic";
final int parallelism = 1;
// create topic
createTestTopic(topic, parallelism, 1);
final StreamExecutionEnvironment env =
StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
// write 20 messages into topic:
writeSequence(env, topic, 20, parallelism);
// set invalid offset:
CuratorFramework curatorClient = ((KafkaTestEnvironmentImpl) kafkaServer).createCuratorClient();
ZookeeperOffsetHandler.setOffsetInZooKeeper(
curatorClient, standardProps.getProperty("group.id"), topic, 0, 1234);
curatorClient.close();
// read from topic
final int valuesCount = 20;
final int startFrom = 0;
readSequence(env, standardProps, parallelism, topic, valuesCount, startFrom);
deleteTestTopic(topic);
}
@Test
public void runOffsetManipulationInZooKeeperTest() {
try {
final String topicName = "ZookeeperOffsetHandlerTest-Topic";
final String groupId = "ZookeeperOffsetHandlerTest-Group";
final Long offset = (long) (Math.random() * Long.MAX_VALUE);
CuratorFramework curatorFramework =
((KafkaTestEnvironmentImpl) kafkaServer).createCuratorClient();
kafkaServer.createTestTopic(topicName, 3, 2);
ZookeeperOffsetHandler.setOffsetInZooKeeper(curatorFramework, groupId, topicName, 0, offset);
Long fetchedOffset =
ZookeeperOffsetHandler.getOffsetFromZooKeeper(curatorFramework, groupId, topicName, 0);
curatorFramework.close();
assertEquals(offset, fetchedOffset);
} catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Override
public void commit(Map<KafkaTopicPartition, Long> offsetsToCommit) throws Exception {
for (Map.Entry<KafkaTopicPartition, Long> entry : offsetsToCommit.entrySet()) {
KafkaTopicPartition tp = entry.getKey();
long offset = entry.getValue();
if (offset >= 0) {
setOffsetInZooKeeper(curatorClient, groupId, tp.getTopic(), tp.getPartition(), offset);
}
}
}