Github user jiajunwang commented on the issue: https://github.com/apache/helix/pull/199 Snapshorts ![index](https://user-images.githubusercontent.com/1803880/39263645-ab6e7bd4-4877-11e8-9e02-23aca0e42986.png) [Apache Helix - Helix Monitoring Metrics.pdf](https://github.com/apache/helix/files/1948241/Apache.Helix.-.Helix.Monitoring.Metrics.pdf)
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