someone can help explain it？ 发自我的超级手机
2016年12月16日 18:17于 Json Tu <kafka...@126.com>写道： > > Hi all, > we have a cluster of 0.9.0.0 with 3 nodes, we have a topic with 3 replicas, > and send it with ack -1, our sending latency is avg 7ms. I prepare to > optimize performance of cluster through adjusting some params. > we find our brokers has set config item as below, > log.flush.interval.messages=10000 > and other relevant parameter is default, and I find the default value of > log.flush.interval.messages is LONG.MAX_VALUE, because of setting this config > will flush intiative that may affect performace . I wonder can I cancel this > config item’s setting, and use default value. > > I think use default value may have two drawback as below. > 1.recovery checkpoint can not be updated，so when load segments，it will scan > from begin to end. > 2.it may lose data when leader partition’s broker’s vm is restart，but I think > 3 replicas can remedy this drawback if the network between them is good. > > any suggestions? thank you
