;user@cassandra.apache.org"
Date: Wednesday, October 16, 2019 at 11:36 AM
To: "user@cassandra.apache.org"
Cc: Bill Walters
Subject: Re: Elevated response times from all nodes in a data center at the
same time.
Message from External Sender
It's possible the queries you're norm
nk about anything else, I hope some of those ideas will
> help you diagnose the problem. Once it is diagnosed, we should be able to
> reason about how we can fix it.
>
> C*heers,
> ---
> Alain Rodriguez - al...@thelastpickle.com
> France / Spain
>
> The
have compactions fronting the p99’s. If so, then
> go back to looking at the I/O. Disbelieve any metrics not captured at a
> high resolution for a time window around the compactions, like 100ms. You
> could be hitting I/O stalls where reads are blocked by the flushing of
> write
writes. It’s
short-lived when it happens, and per-minute metrics won’t provide breadcrumbs.
From: Bill Walters
Date: Monday, October 14, 2019 at 7:10 PM
To:
Subject: Elevated response times from all nodes in a data center at the same
time.
Hi Everyone,
Need some suggestions regarding a peculiar
Hi Everyone,
Need some suggestions regarding a peculiar issue we started facing in our
production cluster for the last couple of days.
Here are our Production environment details.
AWS Regions: us-east-1 and us-west-2. Deployed over 3 availability zone in
each region.
No of Nodes: 24
Data Centers
