Question

我有一个Camel 2.25.0路由，监听一个聚集在密钥上的JMS队列。聚合配置为具有10分钟的完成超时，LevelDBAggregationRepository和UseLatestAggregationStrategy。

from("jms:inbound")
        .log("Received views change stream")
        .bean(viewService, "updateDependencies")
        .aggregate()
        .header("JMSXGroupID")
        .aggregationStrategy(new UseLatestAggregationStrategy())
        .completionTimeout(600000) // 10 minutes
        .completeAllOnStop()
        .aggregationRepository(new LevelDBAggregationRepository("aggregation-repository", "./aggregation-repository"))
        .log("Process views change stream")
        .to("jms:outbound");

有时会阻塞线程，并且不会占用队列。发生这种情况时，日志显示updateDependencies调用与聚合开始之间有一个等待。 XXXX是上一个聚合的结尾，而YYYY是阻止的聚合。

APM duration: 1,073.2s
August 7th 2020, 11:39:20.327   onAggregation +++  end  +++ with correlation key: XXXX
August 7th 2020, 11:39:20.327   Received views change stream
August 7th 2020, 11:39:20.341   1 documents touched based on update // log from updateDependencies
August 7th 2020, 11:57:13.555   onAggregation +++ start +++ with correlation key: YYYY

在AggregateProcessor中，聚合之前有一个锁

lock.lock();
try {
    aggregated = doAggregation(key, copy);
} finally {
    lock.unlock();
}

我的猜测是等待时间是由于锁造成的，但这没有任何意义，因为我们可以看到先前的聚合（XXXX）已经完成，因此应该释放锁。

我还检查了应用程序，其他线程仍在运行。

骆驼聚合等待锁

0 个答案: