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https://issues.apache.org/jira/browse/RATIS-1247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17250899#comment-17250899
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runzhiwang edited comment on RATIS-1247 at 12/17/20, 8:35 AM:
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bq. Besides, if we want to change leader from server1 to server2, we can assign
server2 with highest priority, but maybe we also need to force server1 stop
accepting client request, otherwise, maybe server2 hard or take a long time to
catch up with server1's log. What do you think ?
bq.
bq. We may force server1 to step down during configuration change.
[~szetszwo] Hi, Though we force server1 to step down, if server2's log is lag
behind, server2 can not win the leader election. But when upgrade, we need
server2 win the leader election.
was (Author: yjxxtd):
bq. Besides, if we want to change leader from server1 to server2, we can assign
server2 with highest priority, but maybe we also need to force server1 stop
accepting client request, otherwise, maybe server2 hard or take a long time to
catch up with server1's log. What do you think ?
bq.
bq. We may force server1 to step down during configuration change.
[~szetszwo] Hi, Though we force server1 to step down, if server2's log is lag
behind, server2 can not win the leader election. But when upgrade, we need
server2 win the leader election.
> Support rolling upgrade and rollback
> ------------------------------------
>
> Key: RATIS-1247
> URL: https://issues.apache.org/jira/browse/RATIS-1247
> Project: Ratis
> Issue Type: Sub-task
> Reporter: runzhiwang
> Assignee: runzhiwang
> Priority: Major
>
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