> On Jan 27, 2020, at 10:52 PM, Allen Wittenauer
> <[email protected]> wrote:
>
> This is almost always because whatever is running on the two executors
> have suffocated the system resources.
... and before I forget, a reminder: Java threads take up a file descriptor.
Hadoop's unit tests were firing up 10s of thousands of threads which were
eating up 10s of thousands of FDs and ultimately lead to "cannot fork, no
resource" errors causing everything to come tumbling down for the Jenkins salve
process. So _all_ the resources, not just RAM or whatever.
