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From Jonathan Ellis <>
Subject Re: Re: Repair question - why is so much data transferred?
Date Thu, 21 Jul 2011 15:55:25 GMT
On Thu, Jul 21, 2011 at 10:43 AM,  <> wrote:
> from ticket 2818:
> "One (reasonably simple) proposition to fix this would be to have repair
> schedule validation compactions across nodes one by one (i.e, one CF/range
> at a time), waiting for all nodes to return their tree before submitting the
> next request. Then on each node, we should make sure that the node will
> start the validation compaction as soon as requested. For that, we probably
> want to have a specific executor for validation compaction"
> .. This was the way I thought repair worked.

Totally reasonable.

Unfortunately Sylvain didn't get to give his lightning talk at the
Summit about how "Repair doesn't work the way you think it does."  But
yeah, we're fixing it. :)

Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support

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