No data on the second time. The partition is empty but starting from the second request the response is slow.
On Mon, Jan 28, 2013 at 6:31 PM, Jun Rao <jun...@gmail.com> wrote: > Not sure what's the causing the slow down. Is the second fetch geting more > data? > > Also, if all those partitions are on the same broker, you could have > fetched all partitions' data in a single fetch request. > > Thanks, > > Jun > > On Mon, Jan 28, 2013 at 6:02 AM, Danny Yeshurun <da...@myheritage.com > >wrote: > > > Hi, > > > > I am using Kafka 0.7.2 > > I have a consumer that tries to fetch messages from several partitions on > > the same broker (and topic). > > The consumers issues a fetch request per partition, if there are messages > > to read, it fetches the first one and goes to the next partition to fetch > > another message and so on (in a loop). > > When there are not messages in a partition, the consumer will issue > another > > fetch request on the next cycle etc. > > I noticed that starting with the 2nd fetch request, response time becomes > > unacceptable, i.e. reading back the response from the broker takes ~0.04 > > second (while it took ~0.0006 sec on the first time). > > This behavior is consistent over different runs. > > > > Any idea? > > > > Thanks, > > Danny > > >
