Since 1.3
File event listener allows system to monitor changes on server filesystem. User may define, which filesystem resource should be observed as a source of file event. User also specifies task, which should be processed as reaction to change on filesystem.
There is process which performs checks for changes on file system. This process works with preconfigured periodicity, thus there is minimal interval which for checks. You can set this minimal interval by clover property "clover.event.fileCheckMinInterval".
In cluster environment, each event listener has attribute "node ID" which specifies cluster node, which checks its local filesystem. In "standalone" environment, "node ID" attribute is ignored.