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https://issues.apache.org/jira/browse/CASSANDRA-13870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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C. Scott Andreas resolved CASSANDRA-13870.
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Resolution: Information Provided
> Cassandra repair process in Low Bandwidth Network
> -------------------------------------------------
>
> Key: CASSANDRA-13870
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13870
> Project: Cassandra
> Issue Type: Task
> Reporter: Kishore Mohapatra
> Priority: Trivial
>
> Hi,
> we have a cassandra cluster with 7 nodes each in 3 datacenters.
> Network bandwidth between DC1 and DC2 is very good (10Gbit/s) and a dedicated
> one. However network pipe between DC1 and DC3 and between Dc2 and DC3 is very
> poor and has only 100 MBit/s and also goes thru VPN network. Each node
> contains about 100 Gb of data and has a RF of 3. Whenever we run the repair,
> it fails with streaming errors and never completes.
> I could repair either just in the local dc or just the first two DCs. Can not
> repair DC3 when i combine with the other two DCs.
> So how can i succesfully repair the keyspace in these kind of environments ?
> I see that there is a parameter to throttle the inter-dc stream thruput,
> which default to 200 MBit/s. So what is the minimum threshold that i could
> set it to without affecting the cluster ?
> Is there any other way to work in these kind of envornments ?
> I will appreciate your feedback and help on this.
> Thanks
> Kishore
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