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Performance PreLoader #95

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Merged
qq254963746 merged 1 commit into from
Sep 6, 2015
Merged

Performance PreLoader #95

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35 changes: 21 additions & 14 deletions lts-queue/lts-queue-api/src/main/java/com/lts/queue/AbstractPreLoader.java
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Original file line number Diff line number Diff line change
Expand Up @@ -31,8 +31,8 @@ public abstract class AbstractPreLoader implements PreLoader {
// 预取阀值
private double factor = 0.8;

private ConcurrentHashMap<String/*taskTrackerNodeGroup*/, List<JobPo>>
JOB_MAP = new ConcurrentHashMap<String, List<JobPo>>();
private ConcurrentHashMap<String/*taskTrackerNodeGroup*/, BlockingQueue<JobPo>>
JOB_MAP = new ConcurrentHashMap<String, BlockingQueue<JobPo>>();

// 加载的信号
private ConcurrentHashSet<String> LOAD_SIGNAL = new ConcurrentHashSet<String>();
Expand All @@ -58,7 +58,7 @@ public void run() {
LOAD_SIGNAL.remove(loadTaskTrackerNodeGroup);
}
}
}, 3, 1, TimeUnit.SECONDS);
}, 500, 500, TimeUnit.MILLISECONDS);
}

application.getEventCenter().subscribe(new EventSubscriber(application.getConfig().getIdentity() + "_preLoader", new Observer() {
Expand Down Expand Up @@ -117,10 +117,23 @@ public JobPo take(String taskTrackerNodeGroup, String taskTrackerIdentity) {
protected abstract List<JobPo> load(String loadTaskTrackerNodeGroup, int offset);

private JobPo get(String taskTrackerNodeGroup) {
List<JobPo> jobPos = JOB_MAP.get(taskTrackerNodeGroup);
BlockingQueue<JobPo> jobPos = JOB_MAP.get(taskTrackerNodeGroup);
if (jobPos == null) {
jobPos = new CopyOnWriteArrayList<JobPo>();
List<JobPo> oldJobPos = JOB_MAP.putIfAbsent(taskTrackerNodeGroup, jobPos);
jobPos = new PriorityBlockingQueue<JobPo>(step, new Comparator<JobPo>() {
@Override
public int compare(JobPo left, JobPo right) {
int compare = left.getTriggerTime().compareTo(right.getTriggerTime());
if (compare != 0) {
return compare;
}
compare = left.getPriority().compareTo(left.getPriority());
if (compare != 0) {
return compare;
}
return left.getGmtCreated().compareTo(right.getGmtCreated());
}
});
BlockingQueue<JobPo> oldJobPos = JOB_MAP.putIfAbsent(taskTrackerNodeGroup, jobPos);
if (oldJobPos != null) {
jobPos = oldJobPos;
}
Expand All @@ -132,13 +145,7 @@ private JobPo get(String taskTrackerNodeGroup) {
LOAD_SIGNAL.add(taskTrackerNodeGroup);
}
}
if (jobPos.size() > 0) {
try {
return jobPos.remove(0);
} catch (ArrayIndexOutOfBoundsException e) {
return null;
}
}
return null;
return jobPos.poll();
}

}