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https://issues.apache.org/jira/browse/ZOOKEEPER-3218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16745824#comment-16745824
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Hudson commented on ZOOKEEPER-3218:
-----------------------------------
SUCCESS: Integrated in Jenkins build ZooKeeper-trunk #356 (See
[https://builds.apache.org/job/ZooKeeper-trunk/356/])
ZOOKEEPER-3218: Add min notification interval property for fast leader
(fangmin: rev 0b504dec95b09acb05b40505588f7cda8131fea6)
* (edit) zookeeper-docs/src/main/resources/markdown/zookeeperAdmin.md
* (edit)
zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/FastLeaderElection.java
> zk server reopened，the interval for observer connect to the new leader is too
> long，then session expired
> -------------------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-3218
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3218
> Project: ZooKeeper
> Issue Type: Bug
> Environment: win7 32bits
> zookeeper 3.4.6、3.4.13
> Reporter: yangoofy
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.6.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> two participants、one observer，zkclient connect to observer。
> Then，close the two participants，the zookeeper server cloesed
> Ten seconds later，reopen the two participants，and leader selected
> ----------------------------------------------------------------------------
> But the observer can't connect to the new leader immediately。Because in
> lookForLeader, the observer use blockingQueue(recvqueue) to offer/poll
> notifications，when the recvqueue is empty，poll from recvqueue will be
> blocked，and timeout is 200ms，400ms，800ms....60s。
> For example，09:59:59 observer poll notification，recvqueue was empty and
> timeout was 60s；10:00:00 two participants reopened and reselected；10:00:59
> observer polled notification，connected to the new leader
> But the maxSessionTimeout default to 40s。The session expired
> -----------------------------------------------------------------------------
> Please improve it：observer should connect to the new leader as soon as
> possible
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