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Posted to dev@zookeeper.apache.org by "Flavio Paiva Junqueira (JIRA)" <ji...@apache.org> on 2009/07/20 15:37:14 UTC
[jira] Updated: (ZOOKEEPER-480) FLE should perform leader check
when node is not leading and add vote of follower
[ https://issues.apache.org/jira/browse/ZOOKEEPER-480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Flavio Paiva Junqueira updated ZOOKEEPER-480:
---------------------------------------------
Attachment: ZOOKEEPER-480.patch
> FLE should perform leader check when node is not leading and add vote of follower
> ---------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-480
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-480
> Project: Zookeeper
> Issue Type: Bug
> Reporter: Flavio Paiva Junqueira
> Fix For: 3.2.1
>
> Attachments: ZOOKEEPER-480.patch
>
>
> As a server may join leader election while others have already elected a leader, it is necessary that a server handles some special cases of leader election when notifications are from servers that are either LEADING or FOLLOWING. In such special cases, we check if we have received a message from the leader to declare a leader elected. This check does not consider the case that the process performing the check might be a recently elected leader, and consequently the check fails.
> This patch also adds a new case, which corresponds to adding a vote to recvset when the notification is from a process LEADING or FOLLOWING. This fixes the case raised in ZOOKEEPER-475.
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