Per-Job Blacklisting

The configuration value mapred.max.tracker.failures in mapred-site.xml (MapReduce v1) specifies a number of task failures in a specific job after which the TaskTracker is blacklisted for that job. The TaskTracker can still accept tasks from other jobs, as long as it is not blacklisted cluster-wide (see below).

A job can only blacklist up to 25% of TaskTrackers in the cluster.