> The write path (not replicate on write) for counters involves a read, >
I'm afraid you got it wrong. The read done during counter writes *is* done by the replicate on write taks. Though really, the replicate on write taks are just one part of the counter write path (they are not "not the write path"). -- Sylvain > > On Wed, Jul 3, 2013 at 1:03 PM, Robert Coli <rc...@eventbrite.com> wrote: > >> On Wed, Jul 3, 2013 at 9:59 AM, Andrew Bialecki < >> andrew.biale...@gmail.com> wrote: >> >>> 2. I'm assuming in our case the cause is incrementing counters because >>> disk reads are part of the write path for counters and are not for >>> appending columns to a row. Does that logic make sense? >>> >> >> That's a pretty reasonable assumption if you are not doing any other >> reads and you see your disk busy doing non-compaction related reads. :) >> >> =Rob >> > >
