Re: [p2-dev] Brittle downloads

[Henrik Lindberg <henrik.lindberg@xxxxxxxxxxxxxx>]

Hi,
I worked on timeout for connect recently, and I know that connect has  
a timeout of 120 seconds. Without actually testing read timeout, I  
know that it is setup to be 120 seconds as well. This was done because  
of discussion in https://bugs.eclipse.org/bugs/show_bug.cgi?id=266246.
(This is when using httpClient).

I don't think there are any retries.

Don't know if the problem is because you are hitting a bad mirror, but  
it does not look like it because the exception message is showing the  
full URL to the artifact (as opposed to just the repository URL) - but  
I am not 100% sure.

Henrik Lindberg
henrik.lindberg@xxxxxxxxxxxxxx



On May 14, 2009, at 9:40 AM, Thomas Hallgren wrote:

> I know that there's been some improvements in this area since M7  
> which I'm currently using but I thought I might ask anyway. What  
> kind of socket timeouts do we have and do we make any attempt to  
> retry when a socket timeout exception is thrown?
>
> I tried installing the org.eclipse.platform feature several times. I  
> always ran into a SocketTimeoutException (see stacktrace below).  
> Apparently it tries to download the packed file first and then the  
> jar file. If neither succeeds, the installation fails. I first tried  
> this on my local machine. I almost always failed so I decided to  
> move to build.eclipse.org. As it turns out, it fails there too. So  
> what's going on here? Does it contact mirrors that fails or what?
>
> I'm explicitly trying to install from http://download.eclipse.org/eclipse/updates/3.5milestones/S-3.5M7-I200904302300 
> . Here's the stack-trace that I'm getting 7 times out of ten (the  
> bundle that failes question vary):
>
>    [java] !MESSAGE Unable to read repository at http://download.eclipse.org/eclipse/updates/3.5milestones/S-3.5M7-I200904302300/plugins/org.eclipse.update.ui_3.2.200.v20090213.jar.pack.gz 
> .
>    [java] !STACK 0
>    [java] java.net.SocketTimeoutException: Read timed out
>    [java]     at java.net.SocketInputStream.socketRead0(Native Method)
>    [java]     at  
> java.net.SocketInputStream.read(SocketInputStream.java:155)
>    [java]     at  
> java.io.BufferedInputStream.fill(BufferedInputStream.java:229)
>    [java]     at  
> java.io.BufferedInputStream.read1(BufferedInputStream.java:267)
>    [java]     at  
> java.io.BufferedInputStream.read(BufferedInputStream.java:324)
>    [java]     at  
> sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:658)
>    [java]     at  
> sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:607)
>    [java]     at sun.net.www.protocol.http.HttpURLConnection.getInputStream 
> (HttpURLConnection.java:966)
>    [java]     at  
> org 
> .eclipse 
> .ecf 
> .provider 
> .filetransfer 
> .retrieve 
> .UrlConnectionRetrieveFileTransfer 
> .getDecompressedStream(UrlConnectionRetrieveFileTransfer.java:441)
>    [java]     at  
> org 
> .eclipse 
> .ecf 
> .provider 
> .filetransfer 
> .retrieve 
> .UrlConnectionRetrieveFileTransfer 
> .openStreams(UrlConnectionRetrieveFileTransfer.java:285)
>    [java]     at  
> org 
> .eclipse 
> .ecf 
> .provider 
> .filetransfer 
> .retrieve 
> .AbstractRetrieveFileTransfer 
> .sendRetrieveRequest(AbstractRetrieveFileTransfer.java:804)
>    [java]     at  
> org 
> .eclipse 
> .ecf 
> .provider 
> .filetransfer 
> .retrieve 
> .AbstractRetrieveFileTransfer 
> .sendRetrieveRequest(AbstractRetrieveFileTransfer.java:502)
>    [java]     at  
> org 
> .eclipse 
> .ecf 
> .provider 
> .filetransfer 
> .retrieve 
> .MultiProtocolRetrieveAdapter 
> .sendRetrieveRequest(MultiProtocolRetrieveAdapter.java:98)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.repository.FileReader.sendRetrieveRequest(FileReader.java:251)
>    [java]     at  
> org 
> .eclipse 
> .equinox.internal.p2.repository.FileReader.readInto(FileReader.java: 
> 200)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.repository.RepositoryTransport.download(RepositoryTransport.java: 
> 69)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.repository.RepositoryTransport.download(RepositoryTransport.java: 
> 113)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2 
> .artifact 
> .repository 
> .simple 
> .SimpleArtifactRepository 
> .downloadArtifact(SimpleArtifactRepository.java:472)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2 
> .artifact 
> .repository 
> .simple 
> .SimpleArtifactRepository 
> .downloadArtifact(SimpleArtifactRepository.java:455)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2 
> .artifact 
> .repository 
> .simple 
> .SimpleArtifactRepository.getArtifact(SimpleArtifactRepository.java: 
> 522)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.artifact.repository.MirrorRequest.getArtifact(MirrorRequest.java: 
> 200)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2 
> .artifact.repository.MirrorRequest.transferSingle(MirrorRequest.java: 
> 175)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.artifact.repository.MirrorRequest.transfer(MirrorRequest.java:159)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.artifact.repository.MirrorRequest.perform(MirrorRequest.java:95)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2 
> .artifact 
> .repository 
> .simple 
> .SimpleArtifactRepository.getArtifact(SimpleArtifactRepository.java: 
> 511)
>    [java]     at  
> org 
> .eclipse 
> .equinox 
> .internal 
> .p2.artifact.repository.simple.DownloadJob.run(DownloadJob.java:64)
> - thomas
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