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From "Hao Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HELIX-706) ExternalViewGeneration should be executed asynchronously in Helix controller
Date Tue, 26 Jun 2018 00:25:00 GMT
Hao Zhang created HELIX-706:
-------------------------------

             Summary: ExternalViewGeneration should be executed asynchronously in Helix controller
                 Key: HELIX-706
                 URL: https://issues.apache.org/jira/browse/HELIX-706
             Project: Apache Helix
          Issue Type: Task
            Reporter: Hao Zhang


EV generation should not block helix resource rebalance. According to our profiling results,
external view generation takes ~ 1/5 of the pipeline latency.

The goal is to generate external view asynchronously, and hopefully we can have 20% improvement
in rebalance pipeline



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