Hello,
I am working on setting up a monitoring tool to monitor Cassandra Instances.
Are there any wikis which specifies optimum value for each Cassandra KPIs?
For instance, I am not sure,
What value of "Memtable Columns Count" can be considered as "Normal".
What value of the same has to be
her customer 100 is. The better approach is to
establish a baseline for when these metrics start to indicate a serious issue
is occurring in that particular app. Basically when people notice a problem,
what did these numbers look like in the minutes, hours and days prior? That's
the way to
Hello,
We are using Cassandra 2.1.13 with each node having a NVMe disk with the
configuration of Total Capacity - 1.2TB, Alloted Capacity - 880GB. We would
like to increase the default value of 32 for the param concurrent_reads. But
the document says
"(Default: 32)note For workloads with
Hello,
We have commented out "concurrent_compactors" in our Cassandra 2.1.13
installation.
We would like to review this setting, as some issues indicate that the default
configuration may affect read/write performance.
https://issues.apache.org/jira/browse/CASSANDRA-8787
https://issues.
Hello,
I have created a column family for User File Management.
CREATE TABLE "UserFile" ("USERID" bigint,"FILEID" text,"FILETYPE"
int,"FOLDER_UID" text,"FILEPATHINFO" text,"JSONCOLUMN" text,PRIMARY KEY
("USERID","FILEID"));
Sample Entry
(4*003, 3f9**
Hello,
I was going through this presentation and the Slide-55 caught my attention.
i.e) "Throttled down compactions during high load period, throttled up during
low load period"
Can we throttle down compactions without a restart?
If this can be done, what are all the parameters(JMX
Hello,
We are using Cassandra 2.1.13. We are calculating node CPU utilization using
the below formula,
CPUUsage = CPURate / (AvailableProcessors*100)
CPURate = (x2-x1)/(t2-t1),
where x2 and x1 are the values of the attribute ProcessCpuTime at the time t2
and t1 respectively.
W
Hi Matija,
Leveraging page cache yields good results and if accounted for can provide you
with performance increase on read side
I would like to leverage the page cache to improve read performance. How this
can be done?
Best Regards,
Julian.
On Mon, 13 Mar 2017 03:42:3
