[ZOOKEEPER-480] FLE should perform leader check when node is not leading and add vote of follower

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 3.2.1, 3.3.0
• Hadoop Flags: Reviewed
• Assignee: Flavio Paiva Junqueira
• Reporter: Flavio Paiva Junqueira
• Created: 20/Jul/09 13:33
• Updated: 02/May/13 02:29
• Resolved: 04/Aug/09 18:07

Description

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.

Issue Links

• is depended upon by: ZOOKEEPER-475 FLENewEpochTest failed on nightly builds.