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https://issues.apache.org/jira/browse/ZOOKEEPER-3448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16912596#comment-16912596
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Hadoop QA commented on ZOOKEEPER-3448:
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+1 overall. GitHub Pull Request Build
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 4 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs (version 3.0.1)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/4101//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/4101//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/4101//console
This message is automatically generated.
> 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
> Time Spent: 2h 40m
> 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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