Disabling the write ahead log with 2 data centers?

2015-01-23 Thread Kevin Burton
The WAL (and walls in general) impose a performance overhead. If one were to just take a machine out of the cluster, permanently, when a machine crashes, you could quickly get all the shards back up to N replicas after a node crashes. So realistically, running with a WAL is somewhat redundant.

Re: Disabling the write ahead log with 2 data centers?

2015-01-23 Thread Jonathan Haddad
Well... it depends. Are you saying whenever a machine dies, or any reason, you'd bootstrap a new one in it's place? Or do you just not care about the data? There are cases where it might be ok (if you're using Cassandra as a cache) but if it's your source of truth I think this is likely to

Re: Disabling the write ahead log with 2 data centers?

2015-01-23 Thread Robert Coli
On Fri, Jan 23, 2015 at 9:59 AM, Kevin Burton bur...@spinn3r.com wrote: The WAL (and walls in general) impose a performance overhead. If one were to just take a machine out of the cluster, permanently, when a machine crashes, you could quickly get all the shards back up to N replicas after a