Re: Adding a new node with the double of disk space

Are you saying if a node had double the hardware capacity in every way it would be a bad idea to up num_tokens? I thought that was the whole idea of that setting though? On Thu, Aug 17, 2017 at 9:52 AM, Carlos Rolo wrote: > No. > > If you would double all the hardware on that

Re: Truncate data from a single node

11 20:09 (-0700), "Kevin O'Connor" <ke...@reddit.com.INVALID> > wrote: > > This might be an interesting question - but is there a way to truncate > data > > from just a single node or two as a test instead of truncating from the > > entire cluster? We have time ser

Truncate data from a single node

This might be an interesting question - but is there a way to truncate data from just a single node or two as a test instead of truncating from the entire cluster? We have time series data we don't really care if we're missing gaps in, but it's taking up a huge amount of space and we're looking to

Re: How to avoid flush if the data can fit into memtable

Great post Akhil! Thanks for explaining that. On Mon, May 29, 2017 at 5:43 PM, Akhil Mehra wrote: > Hi Preetika, > > After thinking about your scenario I believe your small SSTable size might > be due to data compression. By default, all tables enable SSTable >

Re: STCS Compaction with wide rows & TTL'd data

lived access tokens in some very specific scenarios, so they are much less likely to be in that CF than the standard 3600s ones, but they're there. > > -Mark > > On Thu, Sep 1, 2016 at 3:53 AM, Kevin O'Connor <ke...@reddit.com> wrote: > > We're running C* 1.2.11 and have

STCS Compaction with wide rows & TTL'd data

We're running C* 1.2.11 and have two CFs, one called OAuth2AccessToken and one OAuth2AccessTokensByUser. OAuth2AccessToken has the token as the row key, and the columns are some data about the OAuth token. There's a TTL set on it, usually 3600, but can be higher (up to 1 month).

Open source equivalents of OpsCenter

Now that OpsCenter doesn't work with open source installs, are there any runs at an open source equivalent? I'd be more interested in looking at metrics of a running cluster and doing other tasks like managing repairs/rolling restarts more so than historical data.

Re: Latency overhead on Cassandra cluster deployed on multiple AZs (AWS)

Are you in VPC or EC2 Classic? Are you using enhanced networking? On Tue, Apr 12, 2016 at 9:52 AM, Alessandro Pieri wrote: > Hi Jack, > > As mentioned before I've used m3.xlarge instance types together with two > ephemeral disks in raid 0 and, according to Amazon, they have

Re: Cassandra is consuming a lot of disk space

Have you tried restarting? It's possible there's open file handles to sstables that have been compacted away. You can verify by doing lsof and grepping for DEL or deleted. If it's not that, you can run nodetool cleanup on each node to scan all of the sstables on disk and remove anything that it's