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https://issues.apache.org/jira/browse/CASSANDRA-7835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111421#comment-14111421
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Jonathan Ellis commented on CASSANDRA-7835:
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To clarify, I think where Ryan was going was, "I want to guarantee sure my
batches are atomic unless there is catastrophic cluster failure," where
"catastrophic cluster failure" is defined as "lost more than RF nodes
permanently."
Currently we can have non atomic batches if we lose 3 nodes permanently, which
may be less than RF. Opting in to RF-1 (coordinator is of course the last)
batchlog entries would give paranoid people peace of mind.
> Atomic batches with an option to specifcy RF-1 batch log entries
> ----------------------------------------------------------------
>
> Key: CASSANDRA-7835
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7835
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Ryan Svihla
> Priority: Minor
>
> Some users seem to be concerned with there only being 2 batch log entries on
> a write and would like more guarantees on consistency, potentially even
> spanning data centers in exchange for less performance.
> Would like the option to have these span data centers.
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