Harry Zhang created HELIX-779:
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Summary: Maintenance rebalancer should not clear preference list
in ideal state
Key: HELIX-779
URL: https://issues.apache.org/jira/browse/HELIX-779
Project: Apache Helix
Issue Type: Bug
Components: helix-core
Reporter: Harry Zhang
Assignee: Harry Zhang
Setting list fields to empty map will prevent newly added and initially
rebalanced resources during maintenance mode from getting re-balanced after
cluster exists maintenance mode.
The right thing to do is to clear every preference list.
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