I have submitted a patch for
https://issues.apache.org/jira/browse/CASSANDRA-14232. Looking for
reviewers/feedback.
Thanks,
Sumanth
On Tue, Feb 13, 2018 at 2:06 PM, Benedict Elliott Smith wrote:
> Sorry, I guess I'm tired. I thought this was discussing local write
> latency.
>
> I'm surprised
Sorry, I guess I'm tired. I thought this was discussing local write
latency.
I'm surprised we have that and not coordinator write latency.
Please do ignore me, I'm not sure why I got involved!
On 13 February 2018 at 21:48, Benedict Elliott Smith
wrote:
> For the record, I'm not certain there
For the record, I'm not certain there *is* a great deal of value in this.
The read latency metrics are expected to vary a great deal, since the
entire IO subsystem is involved.
Writes, however, go straight to a memtable. They only block on IO if we
exceed our commit log flush bandwidth for an ex
Thanks Kurt and Chris for your valuable inputs. Created
https://issues.apache.org/jira/browse/CASSANDRA-14232; I shall start
working on this.
Thanks,
Sumanth
On Mon, Feb 12, 2018 at 7:43 AM, Chris Lohfink wrote:
> It would be good to have it. Its not that its not there because its
> difficult o
It would be good to have it. Its not that its not there because its difficult
or anything. I think its more that the read latency metric was needed for
speculative retry so it was added but the write side wasn't needed for that
feature so wasn't added at same time. It would be very useful in det
I've tried to search around for a reason for this in the past and haven't
found one. I don't think it's a bad idea. Would be a helpful metric to
diagnose internode networking issues - although I'll note that the read
metric will also achieve this assuming you have enough reads to get some
useful in
There is an existing CoordinatorReadLatency table metric. I am looking to
add CoordinatorWriteLatency table metric - however, before I attempt a shot
at it, would like to know if anyone has context around why we currently do
not have such metric (while we have the read metric) - if someone has
alre
