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HDFS goes in bad health

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Health test shows the following errors:

     The health test result for HDFS_FREE_SPACE_REMAINING has become bad: Space free in the cluster: 0 B. Capacity of the cluster: 0 B. Percentage of capacity free: 0.00%. Critical threshold: 10.00%.
     The health test result for HDFS_CANARY_HEALTH has become bad: Canary test failed to create parent directory for /tmp/.cloudera_health_monitoring_canary_files.


We manually verified that space isn't an issue. Connectivity testing is success. No issues with kdc or principals.


Please help to explain root cause for this error message.

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