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https://issues.apache.org/jira/browse/ZOOKEEPER-508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745683#action_12745683
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Mahadev konar commented on ZOOKEEPER-508:
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i fugured out the reason why it fails on the assertion errors != 0. The whole
scenario of 483 fialing with truncate is this
- the test case shutdowns all the followers
- the leader does not realize that its lost the leadership, becasue the time we
ping to see if the leader is still the leader (maybe 1 sec) is greater than the
time hte followers actually take to shutdown and get back and in sync with the
leader
- so the leader never shutsdown any of its stuff (no NIO rejection or nething
else)
so in your case, sometimes the client conencts to the leader and will never see
errors. On the other hand sometimes it may pas s on connection to other
followers and your testcase will pass. So we cannot really say that your test
case is fool proof.
> proposals and commits for DIFF and Truncate messages from the leader to
> followers is buggy.
> -------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-508
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-508
> Project: Zookeeper
> Issue Type: Bug
> Components: quorum
> Reporter: Mahadev konar
> Assignee: Mahadev konar
> Priority: Blocker
> Fix For: 3.2.1, 3.3.0
>
> Attachments: ZOOKEEPER-508.patch, ZOOKEEPER-508.patch
>
>
> The proposals and commits sent by the leader after it asks the followers to
> truncate there logs or starts sending a diff has missing messages which
> causes out of order commits messages and causes the followers to shutdown
> because of these out of order commits.
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