DLM Administration
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Chapter 8. Troubleshooting DLM

To verify that your environment meets the requirements for DPS, see Planning for a DPS Installation and the Hortonworks Support Matrix.

Endpoint is unreachable

DLM does not support updating any cluster endpoints (HDFS, Hive, Ranger, or DLM Engine). If an endpoint must be modified, contact Hortonworks Support for assistance.

Ranger UI does not display deny policy items

If you need to view deny policy details related to a DLM replication policy, you need to use the Ranger UI. However, when a policy with deny conditions is created on Ranger-admin in a replication relationship, the Policy Details page in Ranger does not display the deny policy items. To make the policy visible, update the respective service-def with enableDenyAndExceptionsInPolicies="true" option.

Refer to section "2.2 Enhanced Policy model" in https://cwiki.apache.org/confluence/display/RANGER/Deny-conditions+and+excludes+in+Ranger+policies