MapR 5.1 is at End of Life (EOL) and no longer supported. Please see the latest documentation. This documentation is not being updated.

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5.1 Administration
This section contains administration information such as managing your cluster, data, users, jobs and security information such as configuring your security environment and auditing.
Administrator Guide
Managing the Cluster
Managing Roles and Services
TaskTracker Blacklisting
Per-Job Blacklisting

MapR 5.1 Documentation

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.