Pat,
You might find this post useful in tuning G1 for Cassandra:
*
http://deliberate-thinking.blogspot.com/2019/05/tuning-g1-gc-for-cassandra.html
This assumes a machine with 60-120G of RAM -- and your use case may be
different than the clusters I've tuned, so take each step with care.
Al
I've seen something similar if there is a node still referring to that IP as a
seed node in cassandra.yaml. You might want to check that.
From: Vincent Rischmann
Sent: Wednesday, August 28, 2019 10:10 AM
To: user@cassandra.apache.org
Subject: Re: gossipinfo cont
Here is a tool I worked on to figure out which node to decommission that will
leave you with the most even token balance afterwards.
https://github.com/jdsumsion/vnode-decommission-calculator
Feel free to use or enhance as you desire.
John...
Is there a JMX property somewhere that I could monitor to see how old the
oldest row cache item is?
I want to see how much churn there is.
Thanks in advance,
John...
I have a 24 node cluster, with vnodes set to 256.
'nodetool status ' looks like this for our keyspace:
UN 588.23 GB 256 11.0%
0c8708a7-b962-4fc9-996c-617da642d9ee 1a
UN 601.33 GB 256 11.3%
5ef60730-0b01-4a8b-a578-d828cdf78a1f 1b
UN 613.02 GB
If you only run incremental repairs, does that mean that bitrot will go
undetected for already repaired sstables?
If so, is there any other process that will detect bitrot for all the repaired
sstables other than full repair (or an unfortunate user)?
John...
NOTICE: This email message is for
jbellis talked about incremental repair, which is great, but as I understood,
repair was also somewhat responsible for detecting and repairing bitrot on
long-lived sstables.
If repair doesn't do it, what will?
Thanks,
John...
NOTICE: This email message is for the sole use of the intended rec
The atomic batches feature is all about moving the multi-statement application
to the server side to avoid having to worry about retry logic on the client
side. I'm glad that the client doesn't have to worry about it.
An earlier thread about consistency level and atomic batches broke the
execu