incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Yan Chunlu <springri...@gmail.com>
Subject Re: Could I run node repair when disable gossip and thrift?
Date Mon, 01 Aug 2011 02:20:48 GMT
okay, I see. thanks a lot for the help!

On Mon, Aug 1, 2011 at 5:26 AM, aaron morton <aaron@thelastpickle.com>wrote:

> if you disable gossip the node will appear down to others. This would stop
> the repair starting. After repair has started it *may* still cause problems
> when new streams start (it probably does not). If the node is down other
> nodes will stop sending writes to it.
>
> disable thrift will stop clients sending writes to the node.
>
> If you disable thrift you are doing the opposite of repair. You are asking
> a node to repair it's data so it's in sync with other nodes, at the  same
> time you are preventing it from accepting writes and staying in sync with
> other nodes. So you are creating more repair work for the node.
>
> Will will be increasing the amount of Read Repair, Hinted Handoff and
> Repair work the node must do.  IMHO it's not a good idea.
>
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 1 Aug 2011, at 06:09, Yan Chunlu wrote:
>
> > I am running 3 nodes and RF=3, cassandra v0.7.4
> > seems when disablegossip and disablethrift could keep node in pretty low
> load. sometimes when the node repair doing "rebuilding sstable", I would
> disable gossip and thrift to lower the load. not sure if I could disable
> them in the whole procedure. thanks!
>
>

Mime
View raw message