Of all the settings you could change, why one that’s related to memtables? Streaming doesn’t go through the write path, memtables aren’t involved unless you’re using materialized views or CDC.
> On Oct 31, 2017, at 11:44 AM, Anubhav Kale > <anubhav.k...@microsoft.com.INVALID> wrote: > > You can change YAML setting of memtable_cleanup_threshold to 0.7 (from the > default of 0.3). This will push SSTables to disk less often and will reduce > the compaction time. > > While this won’t change the streaming time, it will reduce the overall time > for your node to be healthy. > > From: Harikrishnan Pillai [mailto:hpil...@walmartlabs.com] > Sent: Tuesday, October 31, 2017 11:28 AM > To: user@cassandra.apache.org > Subject: Re: Re: Tuning bootstrap new node > > There is no magic in speeding up the node addition other than increasing > stream throughput and compaction throughput. > > it has been noticed that with heavy compactions the latency may go up if the > node also start serving data. > > if you really don't want this node to service traffic till all compactions > settle down, you can disable gossip and binary protocol using the nodetool > command. This will allow compactions to continue but requires a repair to fix > the stale data later. > > Regards > > Hari > > > > From: Nitan Kainth <nitankai...@gmail.com <mailto:nitankai...@gmail.com>> > Sent: Tuesday, October 31, 2017 5:47 AM > To: user@cassandra.apache.org <mailto:user@cassandra.apache.org> > Subject: EXT: Re: Tuning bootstrap new node > > Do not stop compaction, you will end up with thousands of sstables. > > You increase stream throughput from default 200 to a heifer value if your > network can handle it. > > Sent from my iPhone > > On Oct 31, 2017, at 6:35 AM, Peng Xiao <2535...@qq.com > <mailto:2535...@qq.com>> wrote: > > Can we stop the compaction during the new node bootstraping and enable it > after the new node joined? > > Thanks > ------------------ Original ------------------ > From: "我自己的邮箱";<2535...@qq.com <mailto:2535...@qq.com>>; > Date: Tue, Oct 31, 2017 07:18 PM > To: "user"<user@cassandra.apache.org <mailto:user@cassandra.apache.org>>; > Subject: Tuning bootstrap new node > > Dear All, > > Can we make some tuning to make bootstrap new node more quick?We have a three > DC cluster(RF=3 in two DCs,RF=1 in another ,48 nodes in the DC with RF=3).As > the Cluster is becoming larger and larger,we need to spend more than 24 hours > to bootstrap a new node. > Could you please advise how to tune this ? > > Many Thanks, > Peng Xiao
