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https://issues.apache.org/jira/browse/ZOOKEEPER-3437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16893297#comment-16893297
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Hudson commented on ZOOKEEPER-3437:
-----------------------------------
SUCCESS: Integrated in Jenkins build ZooKeeper-trunk #629 (See
[https://builds.apache.org/job/ZooKeeper-trunk/629/])
ZOOKEEPER-3437: Improve sync throttling on a learner master (eolivelli: rev
f38905e58e4961ae04d876e1855d6ccb372a706b)
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LearnerHandler.java
* (add)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LearnerSyncThrottler.java
* (add)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/SyncThrottleException.java
* (edit) zookeeper-docs/src/main/resources/markdown/zookeeperAdmin.md
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/FollowerBean.java
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LeaderMXBean.java
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LeaderBean.java
* (delete)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LearnerSnapshotThrottler.java
* (delete)
zookeeper-server/src/test/java/org/apache/zookeeper/server/quorum/LearnerSnapshotThrottlerTest.java
* (edit)
zookeeper-server/src/test/java/org/apache/zookeeper/server/quorum/QuorumPeerMainTest.java
* (delete)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/SnapshotThrottleException.java
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/Leader.java
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LearnerMaster.java
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/ObserverMaster.java
* (add)
zookeeper-server/src/test/java/org/apache/zookeeper/server/quorum/LearnerSyncThrottlerTest.java
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/FollowerMXBean.java
* (delete)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LearnerSnapshot.java
> 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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