Hi Bowen,
There is only one major table taking 90% of writes. I will try to increase the
"commitlog_segment_size_in_mb" value to 1 GB and set "max_mutation_size_in_kb"
to 16MB. Currently we don't set the "commitlog_total_space_in_mb" value so it
should be using default of 8192 MB (8 GB). What d
Hello Jiayong,
/>//There is only one major table taking 90% of writes. /
In your case, what matters isn't the 90% writes, but the remaining 10%.
If the remaining 10% writes are spread over 100 different tables, your
Cassandra node will end up flushing over 600 times per minute.
Therefore, "h
Hi Jiayong,
You will need to reduce the num_tokens on all existing nodes in the
cluster in order to "fix" the repair. Only adding new DCs with lower
num_tokens value is not going to solve the problem for you. In practice,
you have two ways to reduce it on all existing nodes. You can either
b
Hi Bowen,
> "how many tables are being written frequently" - there are normally about
>less then 10 tables being written concurrently.Regarding the "num_token",
>unfortunately we can change it now since it would require rebuilding all
>rings/nodes of the cluster. Actually we used to add a ring
Thank you so much Bowen for your advice on this. Really appreciate it!
Thanks,Jiayong Sun
On Monday, August 16, 2021, 11:56:39 AM PDT, Bowen Song
wrote:
Hi Jiayong,
You will need to reduce the num_tokens on all existing nodes in the cluster in
order to "fix" the repair. Only a
