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From "Jeff Jirsa (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-9876) One way targeted repair
Date Mon, 15 Feb 2016 07:38:18 GMT


Jeff Jirsa commented on CASSANDRA-9876:

Would be especially useful (if not required) if something similar to CASSANDRA-7306 ever happens.

> One way targeted repair
> -----------------------
>                 Key: CASSANDRA-9876
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: sankalp kohli
>            Priority: Minor
> Many applications use C* by writing to one local DC. The other DC is used when the local
DC is unavailable. When the local DC becomes available, we want to run a targeted repair b/w
one endpoint from each DC to minimize the data transfer over WAN.  In this case, it will be
helpful to do a one way repair in which data will only be streamed from other DC to local
DC instead of streaming the data both ways. This will further minimize the traffic over WAN.
This feature should only be supported if a targeted repair is run involving 2 hosts.

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