I was running asynchronous process for concatenating pdf files
I have about 30 pdf files each about 1 mb.
Files are like this: For testing - Actually these are the same files but I replicated and renamed.
a1.pdf
a2.pdf
a3.pdf
a4.pdf
------
-------
a30.pdf
At the middle of the concatenate process the "Thread abortion " occured. How can we solve this problem?