Some questions on nodetool repair.
1. This tool repairs inconsistencies across replicas of the row. Since
latest update always wins, I dont see inconsistencies other than ones
resulting from the combination of deletes, tombstones, and crashed nodes.
Technically, if data is never deleted from
Hi Vish,
1. This tool repairs inconsistencies across replicas of the row. Since
latest update always wins, I dont see inconsistencies other than ones
resulting from the combination of deletes, tombstones, and crashed nodes.
Technically, if data is never deleted from cassandra, then nodetool
1. You don't have to repair if you use QUORUM consistency and you don't
delete data.
2.Performance depends on size of data each node has. It's very difficult to
predict. It may take days.
Thank you,
Andrey
On Tue, Aug 12, 2014 at 2:06 PM, Viswanathan Ramachandran
vish.ramachand...@gmail.com
Thanks Mark,
Since we have replicas in each data center, addition of a new data center
(and new replicas) has a performance implication on nodetool repair.
I do understand that adding nodes without increasing number of replicas may
improve repair performance, but in this case we are adding new
Andrey, QUORUM consistency and no deletes makes perfect sense.
I believe we could modify that to EACH_QUORUM or QUORUM consistency and no
deletes - isnt that right ?
Thanks
On Tue, Aug 12, 2014 at 3:10 PM, Andrey Ilinykh ailin...@gmail.com wrote:
1. You don't have to repair if you use QUORUM
On Tue, Aug 12, 2014 at 4:46 PM, Viswanathan Ramachandran
vish.ramachand...@gmail.com wrote:
Andrey, QUORUM consistency and no deletes makes perfect sense.
I believe we could modify that to EACH_QUORUM or QUORUM consistency and no
deletes - isnt that right?
yes.
