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From Chen Li <che...@gmail.com>
Subject Re: The solution to the sporadic connection refused exceptions
Date Mon, 24 Aug 2015 02:45:18 GMT
@Abdullah: Is this issue related to
https://issues.apache.org/jira/browse/ASTERIXDB-1074? Ian and I plan to
look into the details on Monday.

On Sun, Aug 23, 2015 at 10:08 AM, abdullah alamoudi <bamousaa@gmail.com>
wrote:

> About 3-4 days ago, I was working on the addition of the filesystem based
> feed adapter and it didn't take anytime to complete. However, when I wanted
> to build and make sure all tests pass, I kept getting ConnectionRefused
> errors which caused the installer tests to fail every now and then.
>
> I knew the new change had nothing to do with this failure, yet, I couldn't
> direct my attention away from this bug (It just bothered me so much and I
> knew it needs to be resolved ASAP). After wasting countless hours, I was
> finally able to figure out what was happening :-)
>
> In the startup routine, we start three Jetty web servers (Web interface
> server, JSON API server, and Feed server). Sometime ago, we used to end the
> startup call before making sure the server.isStarted() method returns true
> on all servers. At that time, I introduced the waitUntilServerStarts method
> to make sure we don't return before the servers are ready. Turned out, that
> was an incorrect way to handle this (We can blame stackoverflow for this
> one!) and it is not enough that the server isStarted() returns true. The
> correct way to do this is to call the server.join() method after the
> server.start().
>
> See:
> http://stackoverflow.com/questions/15924874/embedded-jetty-why-to-use-join
>
> This was equally satisfying as it was frustrating and you are welcome for
> the future time I saved each of you :)
> --
> Amoudi, Abdullah.
>

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