5.1.11. HDFS capacity utilization

This service-level alert is triggered if the HDFS capacity utilization exceeds the configured critical threshold (80% warn, 90% critical). It uses the check_hdfs_capacity.php plug-in which checks the NameNode JMX Servlet for the CapacityUsed and CapacityRemaining properties. Potential causes
  • Cluster storage is full Possible remedies
  • Delete unnecessary data.

  • Archive unused data.

  • Add more DataNodes.

  • Add more or larger disks to the DataNodes.

  • After adding more storage, run Balancer.

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