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From "Willem Jiang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CAMEL-2776) Cached stream file deletion causing file not found errors
Date Fri, 04 Jun 2010 09:25:52 GMT

    [ https://issues.apache.org/activemq/browse/CAMEL-2776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=59937#action_59937
] 

Willem Jiang commented on CAMEL-2776:
-------------------------------------

@Claus,
I think user has the responsibility to close the stream that he don't want to use.
Maybe we can address this issue by using HawtDB.


> Cached stream file deletion causing file not found errors
> ---------------------------------------------------------
>
>                 Key: CAMEL-2776
>                 URL: https://issues.apache.org/activemq/browse/CAMEL-2776
>             Project: Apache Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.3.0
>            Reporter: Roland Knight
>            Assignee: Willem Jiang
>             Fix For: 2.4.0, 2.5.0
>
>
> Cached streams larger than the threshold (64K by default) are almost impossible to work
with since when a cached stream is closed, the cached file is deleted. This occurs as a side
effect of converting the associated body to string which can occur frequently if tracing is
turned on. The net result is file not found errors shown below. The only workaround is to
increase the threshold to a large value to keep the body in memory.
> It seems that if stream caching is to be useful, the cached files should be kept in a
map and cleaned up and the end of the route, rather than upon close.
> Work around (set threshold to 10M):
>     camelContext.getProperties().put(CachedOutputStream.THRESHOLD, "10000000");
> Error without work around:
> 16:09:49.278 [main] ERROR o.a.c.c.t.TimerConsumer - Error processing exchange. Exchange[Message:
[Body is instance of java.io.InputStream]]. Caused by: [org.apache.camel.RuntimeCamelException
- java.io.FileNotFoundException: C:\Users\ROLAND~1\AppData\Local\Temp\camel-tmp-594543\cos3643004935230268170.tmp
(The system cannot find the file specified)]
> org.apache.camel.RuntimeCamelException: java.io.FileNotFoundException: C:\Users\ROLAND~1\AppData\Local\Temp\camel-tmp-594543\cos3643004935230268170.tmp
(The system cannot find the file specified)
> 	at org.apache.camel.converter.stream.FileInputStreamCache.reset(FileInputStreamCache.java:65)
> 	at org.apache.camel.util.MessageHelper.resetStreamCache(MessageHelper.java:106)
> 	at org.apache.camel.processor.RedeliveryErrorHandler.deliverToFailureProcessor(RedeliveryErrorHandler.java:344)
> 	at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:111)
> 	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:89)
> 	at org.apache.camel.processor.DefaultErrorHandler.process(DefaultErrorHandler.java:49)
> 	at org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:228)
> 	at org.apache.camel.processor.Pipeline.process(Pipeline.java:75)
> 	at org.apache.camel.processor.UnitOfWorkProcessor.processNext(UnitOfWorkProcessor.java:80)
> 	at org.apache.camel.processor.DelegateProcessor.process(DelegateProcessor.java:48)
> 	at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
> 	at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:44)
> 	at org.apache.camel.processor.SendProcessor$1.doInProducer(SendProcessor.java:106)
> 	at org.apache.camel.processor.SendProcessor$1.doInProducer(SendProcessor.java:104)
> 	at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:189)
> 	at org.apache.camel.processor.SendProcessor.doProcess(SendProcessor.java:103)
> 	at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:87)
> 	at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
> 	at org.apache.camel.processor.DelegateProcessor.processNext(DelegateProcessor.java:53)
> 	at org.apache.camel.processor.DelegateProcessor.proceed(DelegateProcessor.java:82)
> 	at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:173)
> 	at org.apache.camel.processor.interceptor.StreamCachingInterceptor.process(StreamCachingInterceptor.java:52)
> 	at org.apache.camel.processor.interceptor.StreamCachingInterceptor.process(StreamCachingInterceptor.java:52)
> 	at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
> 	at org.apache.camel.processor.RedeliveryErrorHandler.processExchange(RedeliveryErrorHandler.java:185)
> 	at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:151)
> 	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:89)
> 	at org.apache.camel.processor.DefaultErrorHandler.process(DefaultErrorHandler.java:49)
> 	at org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:228)
> 	at org.apache.camel.processor.Pipeline.process(Pipeline.java:75)
> 	at org.apache.camel.processor.UnitOfWorkProcessor.processNext(UnitOfWorkProcessor.java:70)
> 	at org.apache.camel.processor.DelegateProcessor.process(DelegateProcessor.java:48)
> 	at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
> 	at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:102)
> 	at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:49)
> 	at java.util.TimerThread.mainLoop(Timer.java:512)
> 	at java.util.TimerThread.run(Timer.java:462)
> Caused by: java.io.FileNotFoundException: C:\Users\ROLAND~1\AppData\Local\Temp\camel-tmp-594543\cos3643004935230268170.tmp
(The system cannot find the file specified)
> 	at java.io.FileInputStream.open(Native Method)
> 	at java.io.FileInputStream.<init>(FileInputStream.java:106)
> 	at org.apache.camel.converter.stream.FileInputStreamCache.reset(FileInputStreamCache.java:63)
> 	... 36 common frames omitted

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