Order overload causes missing output links

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So far we've had these two "mysterious" issues regarding missing order links:
http://rt.zetaprints.com/Ticket/Display.html?id=708
http://rt.zetaprints.com/Ticket/Display.html?id=1558

I ran a test on the RT ticket 1558 and I think we can narrow it down to 
overload issue. I was able to place order and get links when only ordering one 
or two items at a time. But, when I tried to push the store to its limits (5 
order with images inside and all...) I got the err.
My order only contained "ZP order" links, no PDF, CDR or other links that 
should have been there.
Seems that Magento just finalizes the order when it gets tired of waiting for a 
respond from ZetaPrints.

Also, the "faulty" orders are missing  their status (missing_status.png). This 
is how you can spot one on orders list page in Magento admin.

Hope this gives us a clue on where to look for the solution. Customers are 
waiting for it.

Note. Was not able to replicate on /mageimage/, though.

Original issue reported on code.google.com by agur...@gmail.com on 7 Oct 2011 at 12:52

Attachments:

• missing_status.png

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Hold on. This may be something else altogether.
Pushing multiple orders at the same time by the same user won't work because ZP 
processes one order per user at a time. You were most likely going in as the 
same user if you used the same browser.

We need to retest this with monitoring at ZP end to see what is being cancelled 
there.

Original comment by ad...@zetaprints.com on 7 Oct 2011 at 7:20

• Changed state: ToTest
• Added labels: Unit-0.5

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There's a PHP time out, also. So, it kills the process if it takes too much 
time to execute a task.

Original comment by Anatoly....@gmail.com on 10 Oct 2011 at 4:40

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huh? I think you're wrong about this. I've placed multiple orders at the same 
time before lots of times.

I tested this on /mageimage/
4 items, 1 of them multipage. Checked out ok. 

What kind of test did you have in mind? lets try when ready.

Original comment by agur...@gmail.com on 11 Oct 2011 at 1:55

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Let's take it offline. Ping in the morning.

Original comment by ad...@zetaprints.com on 12 Oct 2011 at 12:35

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There was a misunderstanding with this one. I was suggesting that ordering 
multiple items at once causes the system to overload.

My testing did not result in any err on /mageimage/. Placed an order for 10 
templates at once, some multipage. Order went through no problem.

Original comment by agur...@gmail.com on 3 Nov 2011 at 12:45

• Changed state: Discuss

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Original comment by ad...@zetaprints.com on 17 Feb 2012 at 1:42

• Changed state: WontFix