Is it safe to add a new node to a Cassandra cluster while a repair is running?

Question

I'm getting ready to expand an existing Cassandra cluster. I have repairs scheduled to run on a reoccurring basis. Do I need to disable repairs when adding a new node to a cluster, or can I bootstrap new nodes while repairs are running elsewhere in the cluster?

score 5 · Accepted Answer · edited Oct 02 '18 at 23:55

5

As per Datastax documentation,

Warning: DataStax recommends stopping repair operations during topology changes; the Repair Service does this automatically. Repairs running during a topology change are likely to error when it involves moving ranges.

So, it is clear that topology changes (adding/removing nodes) are not recommended when there is a repair process alive in your cluster

edited Oct 02 '18 at 23:55

Gene

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answered Sep 14 '18 at 15:42

Dinesh Kumar

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Is it safe to add a new node to a Cassandra cluster while a repair is running?

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