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From "Oleg Kalnichevski (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPASYNC-13) java.io.IOException: FileChannel.size() [13534] < position [130834]. Please grow the file before writing.
Date Sun, 05 Feb 2012 14:25:53 GMT

    [ https://issues.apache.org/jira/browse/HTTPASYNC-13?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13200783#comment-13200783
] 

Oleg Kalnichevski commented on HTTPASYNC-13:
--------------------------------------------

I tested the url (http://www.bmf.com.br/Ftp/ContratosPregaoFinal/BF120104.ex_ ) with both
4.0a3 and the latest SVN snapshot and was unable to reproduce the exception. The problem appears
to be caused by a condition whereby an attempt is made to write outside the writable area
of the file (beyond the end of file). This seems to suggest a bug in ZeroCopyConsumer. However,
unless I am able to reproduce the problem I'll have no other choice but close this issue as
CANT REPRODUCE. Is the problem intermittent or can be reliably reproduced under the same conditions?


Oleg
                
> java.io.IOException: FileChannel.size() [13534] < position [130834].  Please grow
the file before writing.
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: HTTPASYNC-13
>                 URL: https://issues.apache.org/jira/browse/HTTPASYNC-13
>             Project: HttpComponents HttpAsyncClient
>          Issue Type: Bug
>    Affects Versions: 4.0-alpha3
>         Environment: OSX Leopard 64 bits, Java 1.6.
>            Reporter: Yuri
>
> I am using httpasyncclient to download many files assynchronously. Each download get's
a unique temp file. For some of the download in the series this is what I see:
> 00:36:00.343 |-ERROR [I/O dispatcher 3] [   c.b.q.h.HttpDownloader] - Could not download
http://www.bmf.com.br/Ftp/ContratosPregaoFinal/BF120104.ex_
> java.io.IOException: FileChannel.size() [13534] < position [130834].  Please grow
the file before writing.
> 	at org.apache.http.impl.nio.codecs.LengthDelimitedDecoder.transfer(LengthDelimitedDecoder.java:145)
~[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.nio.client.methods.ZeroCopyConsumer.onContentReceived(ZeroCopyConsumer.java:75)
~[httpasyncclient-4.0-alpha3.jar:4.0-alpha3]
> 	at org.apache.http.nio.protocol.AbstractAsyncResponseConsumer.consumeContent(AbstractAsyncResponseConsumer.java:67)
~[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.consumeContent(DefaultAsyncRequestDirector.java:329)
~[httpasyncclient-4.0-alpha3.jar:4.0-alpha3]
> 	at org.apache.http.nio.protocol.HttpAsyncClientProtocolHandler.inputReady(HttpAsyncClientProtocolHandler.java:226)
~[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.client.LoggingClientProtocolHandler.inputReady(LoggingClientProtocolHandler.java:98)
[httpasyncclient-4.0-alpha3.jar:4.0-alpha3]
> 	at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:175)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.DefaultClientIODispatch.onInputReady(DefaultClientIODispatch.java:118)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.DefaultClientIODispatch.onInputReady(DefaultClientIODispatch.java:49)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.AbstractIODispatch.inputReady(AbstractIODispatch.java:113)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:160) [httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:342)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:320)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:280)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:106) [httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:599)
[httpcore-nio-4.2-alpha2.jar:4.2-alpha2]
> 	at java.lang.Thread.run(Thread.java:680) [na:1.6.0_29]
> This is what I am doing:
> 		HttpAsyncRequestProducer download = HttpAsyncMethods.createGet(uri);
> 		getHttpClient().execute(download, new ZeroCopyConsumer<Void>(file) {
> 				// overridden failed() and process()
> 		}
> And the response is coming with an explicit Content-Length header, which seems to make
the framework select the LengthDelimitedDecoder to decode the response. Now even if the server
is reporting a wrong length in Content-Length, shouldnt the httpasyncclient simply produce
a file of that size (even if not the complete file)? 
> Could this be caused by the server reporting the wrong length? In any case, it seems
that the code should never throw an exception here. It should 

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