Sandor Molnar created KNOX-2680:
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Summary: Centralized Source of Cluster Configuration Details for
Discovery
Key: KNOX-2680
URL: https://issues.apache.org/jira/browse/KNOX-2680
Project: Apache Knox
Issue Type: Improvement
Components: Server
Affects Versions: 1.5.0, 1.6.0
Reporter: Sandor Molnar
Assignee: Sandor Molnar
Fix For: 2.0.0
Currently, Knox performs cluster configuration discovery via the CM API for
every descriptor (on start-up or descriptor/provider changed), even if the
descriptors reference the same cluster. This discovery can be expensive and
doing it multiple times only to get the same data yields sub-optimal
performance.
It will be better if Knox maintained a central record of the cluster
configuration details, which could be referenced for every applicable
descriptor, perhaps with some expiration of the validity of that record, such
that multiple interactions with the CM API for the same cluster can be avoided.
The associated cluster configuration monitoring functionality will also need to
be modified to accommodate this new behavior.
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