dafu created HELIX-186:
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Summary: batch notification of same type
Key: HELIX-186
URL: https://issues.apache.org/jira/browse/HELIX-186
Project: Apache Helix
Issue Type: Sub-task
Reporter: dafu
Assignee: dafu
for example, all notification events that trigger rebalance pipeline can be
batched since rebalance is idempotent operation. need either expose the
callback events queue or provide a way to merge notification events that
triggers "idempotent" operations.
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