Observed that file descriptor is rapidly increasing to a high value such 20K-30K during starting up a cacheserver process with embedded locator. Problem goes away when classgraph-4.0.6.jar is replaced with classgraph-4.6.7.jar.
A previous attempt to update Geode's classgraph version (
GEODE-5996) was reverted due to increased memory usage concerns. In latest classgraph, memory usage can now be controlled by limiting number of threads, so we should be able to more forward once again.