jiajunwang commented on a change in pull request #632: Asynchronously
calculating the Baseline
URL: https://github.com/apache/helix/pull/632#discussion_r351946851
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File path: helix-core/src/main/java/org/apache/helix/model/ClusterConfig.java
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@@ -94,7 +94,12 @@
// The preference of the rebalance result.
// EVENNESS - Evenness of the resource utilization, partition, and top
state distribution.
// LESS_MOVEMENT - the tendency of keeping the current assignment instead
of moving the partition for optimal assignment.
- REBALANCE_PREFERENCE
+ REBALANCE_PREFERENCE,
+ // Specify if the WAGED rebalancer should asynchronously calculating the
global rebalance result.
+ // Note that asynchronously calculating will reduce the rebalance delay
but may cause more
+ // partition movements/
+ // Default to be true.
+ ASYNC_GLOBAL_REBALANCE
Review comment:
You mean have a different enum for WAGED rebalancer options? I think it's a
good idea.
One thing we might need to discuss is whether we need and how to
differentiate this enum in the ZNode content. Adding prefix seems to be too
much overhead.
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