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Posted to issues@zookeeper.apache.org by "Enrico Olivelli (JIRA)" <ji...@apache.org> on 2019/07/25 19:44:00 UTC
[jira] [Resolved] (ZOOKEEPER-3437) Improve sync throttling on a
learner master
[ https://issues.apache.org/jira/browse/ZOOKEEPER-3437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Enrico Olivelli resolved ZOOKEEPER-3437.
----------------------------------------
Resolution: Fixed
Committed as f38905e58e4961ae04d876e1855d6ccb372a706b to master branch
thank you Jie !
> Improve sync throttling on a learner master
> -------------------------------------------
>
> Key: ZOOKEEPER-3437
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3437
> Project: ZooKeeper
> Issue Type: Improvement
> Components: quorum
> Affects Versions: 3.6.0
> Reporter: Jie Huang
> Assignee: Jie Huang
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.6.0
>
> Time Spent: 3h 40m
> Remaining Estimate: 0h
>
> As described in ZOOKEEPER-1928, a leader can become overloaded if it sends too many snapshots concurrently during sync time. Sending too many diffs at the same time can also cause the overloading issue.
> In this JIRA, we will:
> # add diff sync throttling in addition to snap sync throttling
> # extend the protection to followers that serve observers
> # improve the counting of concurrent snap syncs/diff syncs to avoid double counting or missing counting
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