Recently a lot of the precommit builds haven't been triggering. I just figured out the reason why: the Precommit-Admin build uses a saved JIRA filter to look up the last 300 "Patch Available" tickets across all of the projects for which the precommit bot runs. But, that filter was set to "order by key desc" instead of "order by updated desc". Since the ZooKeeper, MapReduce, etc projects have gotten a lot of patch available recently, the latter half of the issues under HADOOP fell below the paging threshold on the saved filter.
I made a new copy of the filter, ordered by updated DESC instead, and switched over the Precommit-Admin to point to it. I triggered a new Precommit-Admin build and it looks like it fired off a bunch of precommits. You should expect a bunch of precommit results in the next few hours as it chugs through the backlog, and then back to normal. -Todd -- Todd Lipcon Software Engineer, Cloudera