Jie Huang created ZOOKEEPER-3437:
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Summary: 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
Fix For: 3.6.0
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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