Hi,
I have not experienced this issue before.
However, by the description of the error, it seems that the process is having too many files open and the ulimit (going technical here) may have been crossed.
To reduce the number of open files, one thing you could try is to decrease the number of executors. In Spark, which it is what Expedition is using, we could reduce the number of executors by defining the number of CPUs that Expedition is using for Spark.
You can find this value in /home/userSpace/environmentParameters.php
Try to see if the number of used CPUs (NumCPUs) could be decreased a little bit.
I hope this helps
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