Enabling the disk failure policy 

Configure DSE Search to respond to an I/O exception during any index update by enabling the indexing disk failure policy.

You can configure DSE Search to respond to an I/O exception during any index update by enabling the indexing disk failure policy. When enabled, DSE Search uses the configured Cassandra disk failure policy, which by default shuts down gossip and other processes, rendering the node dead. When disabled, DSE Search ignores the Cassandra disk failure policy. The node does not shut down.

  1. Open the dse.yaml file for editing.
  2. Locate the following section:
    # Applies the configured Cassandra disk failure policy to index write failures.
    # Default is disabled (false).
    #
    # enable_index_disk_failure_policy: false
  3. Uncomment the last line and change false to true:
    enable_index_disk_failure_policy: true