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https://issues.apache.org/jira/browse/KUDU-2768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16838234#comment-16838234
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Xu Yao commented on KUDU-2768:
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You’re right. It’s a stronger durablility guarantee. When our cluster is
large, using 4 or 5 replicas is a good option. But if our cluster is very
small (3 master + 3 tserver), we can't create more replicas. I think this
feature will be useful in this small cluster.
> Support client write strong consistency
> ----------------------------------------
>
> Key: KUDU-2768
> URL: https://issues.apache.org/jira/browse/KUDU-2768
> Project: Kudu
> Issue Type: New Feature
> Components: consensus
> Reporter: Xu Yao
> Priority: Major
>
> Sometimes we need to ensure that the data is not lost in the scenario where 2
> replicates cannot be recovered at the same time(we have 3 replicates). This
> requires 3 replicates to be committed before response to client.
> But currently, as long as there are 2 replicates to be committed, the write
> rpc success is returned to the client. Maybe we can add a gflag to indicate
> whether all replicates need to be committed before applying(response to
> client write success).
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