Example usage for java.util.concurrent DelayQueue size

Introduction

In this page you can find the example usage for java.util.concurrent DelayQueue size.

Prototype

public int size() 

Source Link

Usage

From source file:org.apache.hawq.pxf.service.UGICache.java

/**
 * This method is not thread-safe, and is intended to be called in tests.
 *
 * @return the sum of the sizes of the internal queues
 *//*ww  w . j  a v a2s  . co  m*/
int allQueuesSize() {
    int count = 0;
    for (DelayQueue queue : expirationQueueMap.values()) {
        count += queue.size();
    }
    return count;
}

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From source file:org.apache.hawq.pxf.service.UGICache.java

/**
 * Iterate through all the entries in the queue and close expired {@link UserGroupInformation},
 * otherwise it resets the timer for every non-expired entry.
 *
 * @param expirationQueue/*from   w  w  w . j  ava  2  s .  c o  m*/
 */
private void cleanup(DelayQueue<Entry> expirationQueue) {

    Entry expiredUGI;
    while ((expiredUGI = expirationQueue.poll()) != null) {
        if (expiredUGI.isNotInUse()) {
            closeUGI(expiredUGI);
        } else {
            // The UGI object is still being used by another thread
            String fsMsg = "FileSystem for proxy user = " + expiredUGI.getSession().getUser();
            if (LOG.isDebugEnabled()) {
                LOG.debug(expiredUGI.getSession().toString() + " Skipping close of " + fsMsg);
            }
            // Place it back in the queue if still in use and was not closed
            expiredUGI.resetTime();
            expirationQueue.offer(expiredUGI);
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug("Delay Queue Size for segment " + expiredUGI.getSession().getSegmentId() + " = "
                    + expirationQueue.size());
        }
    }
}

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