Steve Loughran created SLIDER-600:
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Summary: RoleHistory to support reloads with different # of roles
from current set
Key: SLIDER-600
URL: https://issues.apache.org/jira/browse/SLIDER-600
Project: Slider
Issue Type: Improvement
Components: appmaster
Affects Versions: Slider 0.60
Reporter: Steve Loughran
Fix For: Slider 2.0.0
The role history won't reload historical placement data if the no. of roles
doesn't match what it saved. It only persists numeric values and can't rebuild
the information.
This means if you add a new role to a cluster: no recovery of any previous
placement
It could persist the names -> priorities of each role, and reload the positions
of those roles about which there are currently records, ignoring the rest.
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