import org.apache.cassandra.metrics.LatencyMetrics; //导入依赖的package包/类
public WeightedQueue(String key, int weight)
{
    this.key = key;
    this.weight = weight;
    this.queue = new SynchronousQueue<Entry>(true);
    this.metric =  new LatencyMetrics("scheduler", "WeightedQueue", key);
}
 

import org.apache.cassandra.metrics.LatencyMetrics; //导入依赖的package包/类
public IndexMetrics(ColumnFamilyStore cfs)
{
    IndexNameFactory nameFactory = new IndexNameFactory(cfs);

    timeouts = Metrics.newMeter(nameFactory.createMetricName("Timeouts"), "search timeouts", TimeUnit.SECONDS);
    failedRequests = Metrics.newMeter(nameFactory.createMetricName("FailedRequests"), "search failed requests", TimeUnit.SECONDS);
    requests = Metrics.newMeter(nameFactory.createMetricName("TotalRequests"), "search total requests", TimeUnit.SECONDS);
    latency = new LatencyMetrics(nameFactory, "Search");
}
 

import org.apache.cassandra.metrics.LatencyMetrics; //导入依赖的package包/类
public WeightedQueue(String key, int weight)
{
    this.key = key;
    this.weight = weight;
    this.queue = new SynchronousQueue<Entry>(true);
    this.metric =  new LatencyMetrics("org.apache.cassandra.metrics", "scheduler", "WeightedQueue", key);
}