Apache Camel路由在处理过程中删除文件时挂起

Question

        from("file:///C:/Temp/from?readLock=changed&readLockCheckInterval=10000&readLockTimeout=0")
            .routeId("SimpleFileRoute")
            .to("file:/C:/Temp/to");

Daemon Thread [Camel (camel-1) thread #2 - file:///C:/Temp/from] (Suspended)    
Thread.sleep(long) line: not available [native method]  
FileChangedExclusiveReadLockStrategy.sleep() line: 104  
FileChangedExclusiveReadLockStrategy.acquireExclusiveReadLock(GenericFileOperations<File>, GenericFile<File>, Exchange) line: 90    
GenericFileRenameProcessStrategy<T>(GenericFileProcessStrategySupport<T>).begin(GenericFileOperations<T>, GenericFileEndpoint<T>, Exchange, GenericFile<T>) line: 64    
GenericFileRenameProcessStrategy<T>.begin(GenericFileOperations<T>, GenericFileEndpoint<T>, Exchange, GenericFile<T>) line: 37  
FileConsumer(GenericFileConsumer<T>).processExchange(Exchange) line: 362    
FileConsumer(GenericFileConsumer<T>).processBatch(Queue<Object>) line: 223  
FileConsumer(GenericFileConsumer<T>).poll() line: 187   
FileConsumer(ScheduledPollConsumer).doRun() line: 174   
FileConsumer(ScheduledPollConsumer).run() line: 101 
Executors$RunnableAdapter<T>.call() line: 511   
ScheduledThreadPoolExecutor$ScheduledFutureTask<V>(FutureTask<V>).runAndReset() line: 308   
ScheduledThreadPoolExecutor$ScheduledFutureTask<V>.access$301(ScheduledThreadPoolExecutor$ScheduledFutureTask) line: 180    
ScheduledThreadPoolExecutor$ScheduledFutureTask<V>.run() line: 294  
RejectableScheduledThreadPoolExecutor(ThreadPoolExecutor).runWorker(ThreadPoolExecutor$Worker) line: 1142   
ThreadPoolExecutor$Worker.run() line: 617   
Thread.run() line: 745  

Answer 1

好的，问题是您使用readlocktimeout=0，如果出于任何原因不能授予对文件的锁，则防止将读锁转换为超时。你真的不应该这样做（坏主意），所以把它设置为一个更高的超时值。

另一方面，我们还可以改进camel-core，在检查更改时检查文件是否仍然存在，如果文件不存在，那么它也可以退出检查。

我已经记录了一张关于这一点的票:https://issues.apache.org/jira/browse/camel-13025