Cloudera Docs

Service capacity

The Service widget transitions from the physical hardware view to a logical architecture view. It breaks down the Ozone Used Space based on the current state of the keys within the system.

Figure 1. Ozone service capacity

This Service widget breaks down total Ozone used space across the following key states:

  • Total: The sum of all Ozone data currently tracked in the system across all states. This exactly matches the physical OZONE USED SPACE in the Cluster widget.
  • Open keys: Temporary data in keys that are currently being written to by clients or have not yet been committed to the system.
  • Committed keys: Finalized, immutable data successfully stored and accessible by users.
  • Pending deletion: Data from keys logically deleted by users but not yet physically scrubbed from the DataNodes. This is the combined total size of data pending deletion across OM, SCM, and Datanodes. This space will eventually be reclaimed.