Flavio Paiva Junqueira updated ZOOKEEPER-480:

    Status: Patch Available  (was: Open)

> 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
>    Affects Versions: 3.2.0
>            Reporter: Flavio Paiva Junqueira
>            Assignee: Flavio Paiva Junqueira
>             Fix For: 3.2.1, 3.3.0
>         Attachments: ZOOKEEPER-480-3.2branch.patch, ZOOKEEPER-480.patch, 
> ZOOKEEPER-480.patch, ZOOKEEPER-480.patch, 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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