On Thu, Jul 11, 2013 at 10:14 AM, Jochen Brüggemann
<[email protected]> wrote:
> Hi,
>
> I am experiencing a very strange problem. I am importing some big xml-files
> and store them into mongoDB. The algorythm is a typical async loop:
>
> doLoop = function( it, callback_loop ) {
> if( it < no_of_items ) {
> storeToMongo( ..., function( err, result ) {
> ...
> doLoop( it+1, callback_loop );
> });
> } else {
> callback_loop();
> }
> };
> doLoop( 0, function() {
> ...
> });
>
>
> Now (suddenly without any remarkable change in the code) I get the following
> error while performing the loop:
>
> events.js:72
> throw er; // Unhandled 'error' event
> ^
> Error: connect EADDRNOTAVAIL
> at errnoException (net.js:901:11)
> at connect (net.js:764:19)
> at net.js:842:9
> at dns.js:72:18
> at process._tickCallback (node.js:415:13)
>
> The error happens after approximately a minute. The number of items
> processed in the meantime is quite the same, but not exactly.
>
> I tried to find out what connect/net causes the error, but I am lost. There
> is not socket-connection in my code. I have a connection to redis, but that
> is o.k. Is it the mongoDB-connection? But why does it get lost suddenly?
I suspect that it makes a new connection on each call and that you're
calling it so often, that it exhausts the ephemeral ports on your
machine.
> The only thing that helps to run through the whole loop is to perform the
> recursive loop call within the mongo-callback like this:
>
> setTimeout( function() {
> doLoop( it+1, callback_loop );
> },1);
>
> Anyone out there who has an idea what is going wrong here?
>
> Thanks,
> Jochen
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