1) if you configure the log flush interval to be 1 message, every produce request will be flushed to disk before the response is sent to the producer.
Thanks, Jun On Tue, Aug 19, 2014 at 6:00 PM, Manjunath Shivakumar < manjunath.shivaku...@betfair.com> wrote: > Hi, > > I wanted to understand the exact behaviour of kafka ( 0.8.1.1 ) w.r.t > fsync. I have read the documentation and some related forum posts, but > wanted to confirm the understanding here. > > 1) If we set the log flush to happen on every message, will it happen > synchronously with each produce request, or happen in the background, while > the produce request returns immediately? > > 2) If the fsync happens asynchronous to the produce requests, will the > consumers be able to see the messages which are yet to be fsync'ed. > > Thanks, > Manjunath > > ________________________________________________________________________ > In order to protect our email recipients, Betfair Group use SkyScan from > MessageLabs to scan all Incoming and Outgoing mail for viruses. > > ________________________________________________________________________
