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From "Aleksey Shipilev" <aleksey.shipi...@gmail.com>
Subject Re: [classlib][nio] jetty corrupts big static files
Date Thu, 29 Nov 2007 14:11:00 GMT
Alexei,

Can you try epoll()-based Selector [1] as fallback? Please specify
this option on cmdline:
-Djava.nio.channels.spi.SelectorProvider=org.apache.harmony.nio.internal.EpollSelectorProviderImpl

[1] https://issues.apache.org/jira/browse/HARMONY-4879

On Nov 29, 2007 5:06 PM, Alexei Zakharov <alexei.zakharov@gmail.com> wrote:
> Hi all,
>
> If you keep track of CC reports (either at [1] or by reading
> alerts@harmony.apache.org) then you probably noticed that we have
> intermittent failures of Jetty scenario on Linux'es for quite long
> period of time already. I've spent some time on investigation of this
> failure and found that Jetty-on-Harmony has issues with handling of
> big static files. In most cases it simply returns corrupted data.
> However, sometimes it hangs or even crashes. I've put the detailed
> description of this problem here [2]. In brief I think we have bugs in
> Harmony implementation of NIO selectors. Jetty works ok if its default
> SelectChannelConnector is replaced with any other of its connectors
> like SockerConnector (no NIO) or BlockingChannelConnector (NIO, but no
> selectors). Stack traces also point to problems somewhere in
> Java_org_apache_harmony_luni_platform_OSNetworkSystem_selectImpl .
>
> IMO such issue is rather critical because it prevents default
> configuration of Jetty from working correctly on Harmony.
> Unfortunately I'm not very familiar with NIO code by myself. So I
> think it would be nice if our NIO experts can take a look at it. And
> IMO it would be good to have it fixed till M4.
>
> [1] http://people.apache.org/~mloenko/snapshot_testing/script/snapshots_summary.html
> [2] https://issues.apache.org/jira/browse/HARMONY-5219
>
> Thanks,
> Alexei
>

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