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https://issues.apache.org/jira/browse/ZOOKEEPER-1291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144976#comment-13144976
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Hudson commented on ZOOKEEPER-1291:
-----------------------------------
Integrated in ZooKeeper-trunk #1357 (See
[https://builds.apache.org/job/ZooKeeper-trunk/1357/])
ZOOKEEPER-1264. FollowerResyncConcurrencyTest failing intermittently.
ZOOKEEPER-1282. Learner.java not following Zab 1.0 protocol - setCurrentEpoch
should be done upon receipt of NEWLEADER (before acking it) and not upon
receipt of UPTODATE.
ZOOKEEPER-1291. AcceptedEpoch not updated at leader before it proposes the
epoch to followers.
camille :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1198053
Files :
* /zookeeper/trunk/CHANGES.txt
* /zookeeper/trunk/src/java/main/org/apache/zookeeper/server/quorum/Leader.java
* /zookeeper/trunk/src/java/main/org/apache/zookeeper/server/quorum/Learner.java
*
/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java
*
/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/FollowerResyncConcurrencyTest.java
> AcceptedEpoch not updated at leader before it proposes the epoch to followers
> -----------------------------------------------------------------------------
>
> Key: ZOOKEEPER-1291
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1291
> Project: ZooKeeper
> Issue Type: Sub-task
> Components: server
> Affects Versions: 3.4.0
> Reporter: Alexander Shraer
> Assignee: Alexander Shraer
> Fix For: 3.4.0, 3.5.0
>
>
> It is possible that a leader proposes an epoch e and a follower adopts it by
> setting acceptedEpoch to e but the leader itself hasn't yet done so.
> While I'm not sure this contradicts Zab (there is no description of where the
> leader actually sets its acceptedEpoch), it is very counter intuitive.
> The fix is to set acceptedEpoch in getEpochToPropose, i.e., before anyone
> LearnerHandler passes the getEpochToPropose barrier.
> The fix is done as part of ZK-1264
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