Re: [EXTERNAL] How to reduce vnodes without downtime

> > I am seeing some unbalancing and I was worried because I have 256 vnodes > Weird stuff is related to this post where I don't find a match between the > load and du -sh * for the node 10.1.31.60 and I was trying to figure out > the reason, if it was due to the number of vnodes. Out of

Re: [EXTERNAL] How to reduce vnodes without downtime

ere's a >>>> push for 4 in combination with allocate_tokens_for_keyspace from Jon >>>> Haddad & co (based on a paper from Joe Lynch & Josh Snyder). >>>> >>>> If you're satisfied with the results from your own testing, go with 4 >>>>

Re: [EXTERNAL] How to reduce vnodes without downtime

at, Feb 1, 2020 at 5:17 AM Arvinder Dhillon >>> wrote: >>> >>>> What is recommended vnodes now? I read 8 in later cassandra 3.x >>>> Is the new recommendation 4 now even in version 3.x (asking for 3.11)? >>>> Thanks >>>> >>>> On Fri,

Re: [EXTERNAL] How to reduce vnodes without downtime

Thanks Erick! Best, Sergio On Sun, Feb 2, 2020, 10:07 PM Erick Ramirez wrote: > If you are after more details about the trade-offs between different sized >> token values, please see the discussion on the dev mailing list: "[Discuss] >> num_tokens default in Cassandra 4.0 >>

Re: [EXTERNAL] How to reduce vnodes without downtime

Hi guys, thanks a lot for useful tips. I obviously underestimated complexity of such change. Thanks again, Maxim. >

Re: [EXTERNAL] How to reduce vnodes without downtime

> > If you are after more details about the trade-offs between different sized > token values, please see the discussion on the dev mailing list: "[Discuss] > num_tokens default in Cassandra 4.0 >

Re: [EXTERNAL] How to reduce vnodes without downtime

;> wrote: >>> >>>> What is recommended vnodes now? I read 8 in later cassandra 3.x >>>> Is the new recommendation 4 now even in version 3.x (asking for 3.11)? >>>> Thanks >>>> >>>> On Fri, Jan 31, 2

Re: [EXTERNAL] How to reduce vnodes without downtime

>>> Is the new recommendation 4 now even in version 3.x (asking for 3.11)? >>> Thanks >>> >>> On Fri, Jan 31, 2020 at 9:49 AM Durity, Sean R < >>> sean_r_dur...@homedepot.com> wrote: >>> >>>> These are good clarificat

Re: [EXTERNAL] How to reduce vnodes without downtime

. >>> >>> >>> >>> Sean Durity >>> >>> >>> >>> *From:* Anthony Grasso >>> *Sent:* Thursday, January 30, 2020 7:25 PM >>> *To:* user >>> *Subject:* Re: [EXTERNAL] How to reduce vnodes without d

Re: [EXTERNAL] How to reduce vnodes without downtime

rom:* Anthony Grasso >> *Sent:* Thursday, January 30, 2020 7:25 PM >> *To:* user >> *Subject:* Re: [EXTERNAL] How to reduce vnodes without downtime >> >> >> >> Hi Maxim, >> >> >> >> Basically what Sean suggested is the way to do this w

Re: [EXTERNAL] How to reduce vnodes without downtime

> *From:* Anthony Grasso > *Sent:* Thursday, January 30, 2020 7:25 PM > *To:* user > *Subject:* Re: [EXTERNAL] How to reduce vnodes without downtime > > > > Hi Maxim, > > > > Basically what Sean suggested is the way to do this without downtime. > > >

RE: [EXTERNAL] How to reduce vnodes without downtime

These are good clarifications and expansions. Sean Durity From: Anthony Grasso Sent: Thursday, January 30, 2020 7:25 PM To: user Subject: Re: [EXTERNAL] How to reduce vnodes without downtime Hi Maxim, Basically what Sean suggested is the way to do this without downtime. To clarify

Re: [EXTERNAL] How to reduce vnodes without downtime

Hi Maxim, Basically what Sean suggested is the way to do this without downtime. To clarify the, the *three* steps following the "Decommission each node in the DC you are working on" step should be applied to *only* the decommissioned nodes. So where it say "*all nodes*" or "*every node*" it

RE: [EXTERNAL] How to reduce vnodes without downtime

Your procedure won’t work very well. On the first node, if you switched to 4, you would end up with only a tiny fraction of the data (because the other nodes would still be at 256). I updated a large cluster (over 150 nodes – 2 DCs) to smaller number of vnodes. The basic outline was this: *