[HDFS-14634] the original active namenode should have priority to participate in the election when the zookeeper recovery

• Type: Improvement
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.2
• Fix Version/s: 2.7.2
• Component/s: auto-failover
• Target Version/s: 2.7.3
• Assignee: liying
• Reporter: liying
• Created: 08/Jul/19 02:04
• Updated: 31/Jul/19 02:15

Description

Dynamically generates the namenode's election priorities in the zkfc Module。 For example，when the zookeeper crash，all of the namenode remain in their original state。 Then the zookeeper service recovery，the original active namenode should  have priority to participate in the election。