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https://issues.apache.org/jira/browse/CASSANDRA-10446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15109045#comment-15109045
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Anuj Wadehra commented on CASSANDRA-10446:
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I think this option won't do the job. Referring to scenario, when a node failed
in 20 node cluster, what nodes will you set in -hosts and how will you ensure
that the entire ring is repaired?
Suppose host20 failed, you would run "full repair with -hosts
hosts1,host2...host19 option" on all 19 healthy nodes.This option is
unrealistic. Clusters generally use repair -pr option to repair the cluster.
With RF=5, Repair time would be 5 times more for 19 nodes. Moreover, it
requires special planning and manual intervention with just one node failure
which should be undesirable in a distributed fault tolerant system.
Another option would be to run repair -pr on 19 nodes and run repair separately
on the ranges for which the failed node was responsible. But that wont work
because -pr and -hosts options don't work together.
Can you provide a better way to use -hosts option for addressing the issue?
> Run repair with down replicas
> -----------------------------
>
> Key: CASSANDRA-10446
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10446
> Project: Cassandra
> Issue Type: Improvement
> Reporter: sankalp kohli
> Priority: Minor
> Fix For: 3.x
>
>
> We should have an option of running repair when replicas are down. We can
> call it -force.
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