Hi All ,
Need Help !!!
Setup Details:
Cassandra 2.0.14
Geo Red setup
* DC1 - 3 nodes
* DC2 - 3 nodes
We were trying to implement multiple network interfaces with Cassandra 2.0.14
After doing all the steps mentioned in DataStax doc
http://docs.datastax.com/en/archived/cassandr
Hi Experts,
I have some concerns regarding memtable parameters for my current version.
2.1.8.
As per documentation , its mentioned to have Off-heap memtables in Cassandra
2.1 . And in releases 3.2.0 and 3.2.1, the only option that works is:
heap-buffers.
Can you Please suggest what value shoul
Hello,
For some reason the emails I sent to this Cassandra email list end up to PayPal
support email. Can some list admin check if there is something weird in the
list configuration or if some funny person added PayPal support address to
mailing list?
Cheers,
Hannu
On 22/05/17 15:24, Hannu Kröger wrote:
> Hello,
>
> For some reason the emails I sent to this Cassandra email list end up to
> PayPal support email. Can some list admin check if there is something weird
> in the list configuration or if some funny person added PayPal support
> address to mailin
Hi all:
I'm new to Cassandra and I'm doing some performance testing. One of things
that I'm testing is ingestion throughput. My server setup is:
- 3 node cluster
- SSD data (both commit log and sstables are on the same disk)
- 64 GB RAM per server
- 48 cores per server
- Cassand
How many CPUs are you using for interrupts?
http://www.alexonlinux.com/smp-affinity-and-proper-interrupt-handling-in-linux
Have you tried making a flame graph to see where Cassandra is spending its
time? http://www.brendangregg.com/blog/2014-06-12/java-flame-graphs.html
Are you tracking GC pauses
I believe off-heap storage was reintroduced in 3.4 (
https://issues.apache.org/jira/browse/CASSANDRA-9472). It was removed from
3.0 due to the refactoring of the storage engine. Check out
http://www.datastax.com/dev/blog/off-heap-memtables-in-Cassandra-2-1 to get
an overview of the pros and cons o
Hi –
We’ve been running M4.2xlarge EC2 instances with 2-3 TB of storage and have
been comparing this to I-3.2xlarge, which seems more cost effective when
dealing with this amount of storage and from an IOPS perspective. Does anyone
have any recommendations/ on the I-3s and how it performs over
i3 instances will undoubtedly give you more meat for buck - easily 40K+
iops whereas on the other hand EBS maxes out at 20K PIOPS which is highly
expensive (at times they can cost you significantly more than cost of
instance).
But they have ephemeral local storage and data is lost once instance is
