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From "Hudson (Jira)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-3448) Introduce MessageTracker to assist debug leader and leaner connectivity issues
Date Sat, 24 Aug 2019 00:37:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-3448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16914739#comment-16914739
] 

Hudson commented on ZOOKEEPER-3448:
-----------------------------------

SUCCESS: Integrated in Jenkins build Zookeeper-trunk-single-thread #507 (See [https://builds.apache.org/job/Zookeeper-trunk-single-thread/507/])
ZOOKEEPER-3448: Introduce MessageTracker to assist debug leader and (eolivelli: rev b5817fbb12b88bc28be72f109c695ebf51bebf3b)
* (add) zookeeper-server/src/test/java/org/apache/zookeeper/server/util/MessageTrackerTest.java
* (edit) zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/Learner.java
* (edit) zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/LearnerHandler.java
* (add) zookeeper-server/src/test/java/org/apache/zookeeper/server/util/CircularBufferTest.java
* (add) zookeeper-server/src/main/java/org/apache/zookeeper/server/util/CircularBuffer.java
* (edit) zookeeper-docs/src/main/resources/markdown/zookeeperAdmin.md
* (edit) zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/Observer.java
* (edit) zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/Follower.java
* (add) zookeeper-server/src/main/java/org/apache/zookeeper/server/util/MessageTracker.java


> Introduce MessageTracker to assist debug leader and leaner connectivity issues
> ------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-3448
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3448
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.6.0
>            Reporter: Michael Han
>            Assignee: Michael Han
>            Priority: Major
>              Labels: Twitter, pull-request-available
>             Fix For: 3.6.0
>
>          Time Spent: 5h
>  Remaining Estimate: 0h
>
> We want to have better insight on the state of the world when learners lost connection
with leader, so we need capture more information when that happens. We capture more information
through MessageTracker which will record the last few sent and received messages at various
protocol stage, and these information will be dumped to log files for further analysis.



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