Sandor Molnar created KNOX-2899:
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Summary: Disable service-based discovery
Key: KNOX-2899
URL: https://issues.apache.org/jira/browse/KNOX-2899
Project: Apache Knox
Issue Type: Task
Components: Server
Reporter: Sandor Molnar
Assignee: Sandor Molnar
Fix For: 2.1.0
With KNOX-2680, the Knox team introduced two major changes in Cloudera Manager
service discovery:
* the first is that Knox only discovers services that are actually listed in
the given descriptor (instead of discovering the entire cluster)
* from now on, Knox maintains an in-memory repository of discovered data
(cluster, service, and role configs). Caffeine is used as the cache
implementation with the default of 10 mins of cache entry TTL.
It turns out the first improvement may cause redundant topology redeployments
due to "missing" service discovery details while the {{Polling Configuration
Analyzer}} finds a relevant event that belongs to a service that was not
included in the latest discovery round.
For now, we should disable that feature temporarily until it's clear how to
enable and address the redundant redeployment issue.
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