With LCS, 6696 you can maximize the percentage of SSTables that use the new
streaming path. With LCS and relatively small SSTables you should see good
gains. Bootstrap is a use-case that should see the maximum benefits. This
feature will get better with time.
Dinesh
On Wednesday, August 29, 2018, 12:34:32 AM PDT, kurt greaves
<[email protected]> wrote:
My reasoning was if you have a small cluster with vnodes you're more likely to
have enough overlap between nodes that whole SSTables will be streamed on major
ops. As N gets >RF you'll have less common ranges and thus less likely to be
streaming complete SSTables. Correct me if I've misunderstood.
On 28 August 2018 at 01:37, Dinesh Joshi <[email protected]> wrote:
Although the extent of benefits depend on the specific use case, the cluster
size is definitely not a limiting factor.
Dinesh
On Aug 27, 2018, at 5:05 AM, kurt greaves <[email protected]> wrote:
I believe there are caveats that it will only really help if you're not using
vnodes, or you have a very small cluster, and also internode encryption is not
enabled. Alternatively if you're using JBOD vnodes will be marginally better,
but JBOD is not a great idea (and doesn't guarantee a massive improvement).
On 27 August 2018 at 15:46, [email protected]
<[email protected]. invalid> wrote:
Yes, this feature will help with operating nodes with higher data density.
Dinesh
On Saturday, August 25, 2018, 9:01:27 PM PDT, onmstester onmstester
<[email protected]> wrote:
I've noticed this new feature of 4.0:
Streaming optimizations (https://cassandra.apache.org/
blog/2018/08/07/faster_streami ng_in_cassandra.html)
Is this mean that we could have much more data density with Cassandra 4.0 (less
problems than 3.X)? I mean > 10 TB of data on each node without worrying about
node join/remove?
This is something needed for Write-Heavy applications that do not read a lot.
When you have like 2 TB of data per day and need to keep it for 6 month, it
would be waste of money to purchase 180 servers (even Commodity or Cloud).
IMHO, even if 4.0 fix problem with streaming/joining a new node, still
Compaction is another evil for a big node, but we could tolerate that somehow
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