+1, unless it is already logged and I ignore it. Cassandra being open source feel free to participate by creating an issue and/or sharing a patch to do whatever you think would improve Cassandra.
C*heers, ----------------------- Alain Rodriguez - al...@thelastpickle.com France The Last Pickle - Apache Cassandra Consulting http://www.thelastpickle.com 2016-04-04 17:57 GMT+02:00 Anubhav Kale <anubhav.k...@microsoft.com>: > Thanks. Would it be better to log it clearly or expose as a metric or > something else that can be easily automated ? > > > > *From:* Alain RODRIGUEZ [mailto:arodr...@gmail.com] > *Sent:* Friday, April 1, 2016 1:55 AM > > *To:* user@cassandra.apache.org > *Subject:* Re: Speeding up "nodetool rebuild" > > > > Hi, > > > > is there any way to determine that rebuild is complete > > > > If you ran it from a screen ( > https://www.gnu.org/software/screen/manual/screen.html > <https://na01.safelinks.protection.outlook.com/?url=https%3a%2f%2fwww.gnu.org%2fsoftware%2fscreen%2fmanual%2fscreen.html&data=01%7c01%7cAnubhav.Kale%40microsoft.com%7c83413eba6d6a41c15a4608d35a0b5741%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=iCdh%2bCaOTY%2fF5KBQtPhRrKKKYAzXasMu0LsiiVoNHs0%3d>) > or similar stuff, you should see the command return. > > > > Also, 'nodetool netstats | grep -v 100%' will show you remaining stream. > No stream = rebuild finish (look for possible errors in the logs though...). > > > > Last tip is you should be able to imagine how big the dataset is going to > be and checking the on disk size give good progress information too. This > is not really accurate though. > > > > C*heers, > > ----------------------- > > Alain Rodriguez - al...@thelastpickle.com > > France > > > > The Last Pickle - Apache Cassandra Consulting > > http://www.thelastpickle.com > <https://na01.safelinks.protection.outlook.com/?url=http%3a%2f%2fwww.thelastpickle.com&data=01%7c01%7cAnubhav.Kale%40microsoft.com%7c83413eba6d6a41c15a4608d35a0b5741%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=nt4LvhgsIHTb2IyfYGwDSy3%2biaTslE4%2ffNLfGTgAExs%3d> > > > > 2016-03-31 23:19 GMT+02:00 Anubhav Kale <anubhav.k...@microsoft.com>: > > Thanks, is there any way to determine that rebuild is complete. > > Based on following line in StorageService.java, it's not logged. So, any > other way to check besides checking data size through nodetool status ? > > finally > { > // rebuild is done (successfully or not) > isRebuilding.set(false); > } > > > -----Original Message----- > From: Eric Evans [mailto:eev...@wikimedia.org] > Sent: Thursday, March 31, 2016 9:50 AM > To: user@cassandra.apache.org > Subject: Re: Speeding up "nodetool rebuild" > > On Wed, Mar 30, 2016 at 3:44 PM, Anubhav Kale <anubhav.k...@microsoft.com> > wrote: > > Any other ways to make the “rebuild” faster ? > > TL;DR add more nodes > > If you're encountering a per-stream bottleneck (easy to do if using > compression), then having a higher node count will translate to higher > stream concurrency, and greater throughput. > > Another thing to keep in mind, the streamthroughput value is *outbound*, > it doesn't matter what you have that set to on the rebuilding/bootstrapping > node, it *does* matter what it is set to on the nodes that are sending to > it ( > https://na01.safelinks.protection.outlook.com/?url=https%3a%2f%2fissues.apache.org%2fjira%2fbrowse%2fCASSANDRA-11303&data=01%7c01%7cAnubhav.Kale%40microsoft.com%7c27fd8203aa364253b6fc08d3598493a8%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=rnPHvE12p04CnRXkHgD%2bkllLOqGA4gnlSuM3QsCTpDE%3d > aims to introduce an inbound tunable though). > > > -- > Eric Evans > eev...@wikimedia.org > > >
