Example usage for org.apache.zookeeper Watcher interface-usage

Introduction

In this page you can find the example usage for org.apache.zookeeper Watcher interface-usage.

Usage

From source file org.apache.distributedlog.impl.federated.FederatedZKLogMetadataStore.java

/**
 * A Federated ZooKeeper Based Log Metadata Store.
 *To Upgrade a simple ZKLogMetadataStore to FederatedZKLogMetadataStore, following steps should be taken in sequence:
 * a) deploy the new code with disabling createStreamsIfNotExists in all writer.
 * b) once all proxies disable the flag, update namespace binding to enable federated namespace.
 * c) restart writers to take federated namespace in place.

From source file org.apache.distributedlog.impl.ZKLogSegmentMetadataStore.java

/**
 * ZooKeeper based log segment metadata store.
 */
public class ZKLogSegmentMetadataStore implements LogSegmentMetadataStore, Watcher, Children2Callback {

    private static final Logger logger = LoggerFactory.getLogger(ZKLogSegmentMetadataStore.class);

From source file org.apache.distributedlog.impl.ZKNamespaceWatcher.java

/**
 * Watcher on watching a given namespace.
 */
public class ZKNamespaceWatcher extends NamespaceWatcher
        implements Runnable, Watcher, AsyncCallback.Children2Callback {

From source file org.apache.distributedlog.zk.LimitedPermitManager.java

/**
 * Manager to control all the log segments rolling.
 */
public class LimitedPermitManager implements PermitManager, Runnable, Watcher {

    static final Logger LOG = LoggerFactory.getLogger(LimitedPermitManager.class);

From source file org.apache.distributedlog.zk.ZKWatcherManager.java

/**
 * Watcher Manager to manage watchers.
 * <h3>Metrics</h3>
 * <ul>
 * <li> `total_watches`: total number of watches that managed by this watcher manager.
 * <li> `num_child_watches`: number of paths that are watched for children changes by this watcher manager.

From source file org.apache.flume.node.MyWatcher.java

public class MyWatcher implements Watcher {
    private static final Logger logger = LoggerFactory.getLogger(MyWatcher.class);
    private String path;

    public MyWatcher(String path) {
        this.path = path;

From source file org.apache.giraph.bsp.BspService.java

/**
 * Zookeeper-based implementation of {@link CentralizedService}.
 *
 * @param <I> Vertex id
 * @param <V> Vertex data
 * @param <E> Edge data

From source file org.apache.giraph.BspCase.java

/**
 * Extended TestCase for making setting up Bsp testing.
 */
@SuppressWarnings("unchecked")
public class BspCase implements Watcher {
    /** JobTracker system property */

From source file org.apache.giraph.graph.BspService.java

/**
 * Zookeeper-based implementation of {@link CentralizedService}.
 *
 * @param <I> Vertex id
 * @param <V> Vertex data
 * @param <E> Edge data

From source file org.apache.giraph.job.JobProgressTracker.java

/**
 * Class which tracks job's progress on client
 */
public class JobProgressTracker implements Watcher {
    /** Class logger */
    private static final Logger LOG = Logger.getLogger(JobProgressTracker.class);