Node cannot access the sandboxes home directory
The sandboxes home directory is a place where shared sandboxes are located (configured by sandboxes.home server property). The directory can be on a local or network file system. If the directory is not accessible, it is a serious problem preventing the node from working correctly (e.g. jobs cannot be executed and run). In such a case the affected node must be suspended to prevent jobs from being sent to it.
The suspended node can be resumed when the directory is accessible again, see the Auto-Resuming in Unreliable Network section.
Timeline describing the scenario:
sandboxes home is connected to a remote file system
the connection to the file system is lost
periodic check is executed trying to access the directory
if the check fails, the node is suspended
The following configuration properties set the time intervals mentioned above:
Periodicity of sandboxes home checks, in milliseconds.
Accessing sandboxes home timeout, in milliseconds.
Be careful, setting the timeout value too low might force the node under a heavy load to suspend even if the sandboxes home is actually available.