counter cache loading very slow

[Gil Ganz]

Hey
I have a cluster, 3.11.6, startup is very slow, i3en.xlarge server with
about 1tb of data, takes 45 minutes to startup, almost 40 minutes of that
is loading the saved counter cache from disk (200mb), and I can see that in
these 40 minutes the amount of data read from disk is very high, up to
700MB/s. Counters is a feature that is used heavily in this environment,
including the main table in the db, which is half the data size.

What can cause such a slow load of such a small cache? Is there something
that can be done to make this quicker?

Gil

Re: [RELEASE] Apache Cassandra 4.0-rc1 released

[Joe Obernberger]

Can't wait to try it!

-joe

On 4/25/2021 11:44 AM, Patrick McFadin wrote:
This is pretty exciting and a huge milestone for the project. 
Congratulations to all the contributors who worked hard at making this 
the release it needed to be and honoring the database that powers the 
world.Â


Patrick

On Sun, Apr 25, 2021 at 4:10 AM Mick Semb Wever  wrote:

The Cassandra team is pleased to announce the release of Apache
Cassandra version 4.0-rc1.

Apache Cassandra is a fully distributed database. It is the right
choice when you need scalability and high availability without
compromising performance.

� http://cassandra.apache.org/

Downloads of source and binary distributions are listed in our
download section:

� http://cassandra.apache.org/download/

This version is a release candidate[1] on the 4.0 series. As always,
please pay attention to the release notes[2] and Let us know[3] if you
were to encounter any problem.

Debian users shall note, as the docs are not yet updated, the bintray
location is now replaced with the ASF's JFrog Artifactory location:
� https://apache.jfrog.io/artifactory/cassandra/

Enjoy!

[1]: CHANGES.txt

https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=CHANGES.txt;hb=refs/tags/cassandra-4.0-rc1
[2]: NEWS.txt

https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=NEWS.txt;hb=refs/tags/cassandra-4.0-rc1
[3]: https://issues.apache.org/jira/browse/CASSANDRA


 
	Virus-free. www.avg.com 
 



<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

Re: [RELEASE] Apache Cassandra 4.0-rc1 released

[Patrick McFadin]

This is pretty exciting and a huge milestone for the project.
Congratulations to all the contributors who worked hard at making this the
release it needed to be and honoring the database that powers the world.

Patrick

On Sun, Apr 25, 2021 at 4:10 AM Mick Semb Wever  wrote:

> The Cassandra team is pleased to announce the release of Apache
> Cassandra version 4.0-rc1.
>
> Apache Cassandra is a fully distributed database. It is the right
> choice when you need scalability and high availability without
> compromising performance.
>
>  http://cassandra.apache.org/
>
> Downloads of source and binary distributions are listed in our download
> section:
>
>  http://cassandra.apache.org/download/
>
> This version is a release candidate[1] on the 4.0 series. As always,
> please pay attention to the release notes[2] and Let us know[3] if you
> were to encounter any problem.
>
> Debian users shall note, as the docs are not yet updated, the bintray
> location is now replaced with the ASF's JFrog Artifactory location:
>  https://apache.jfrog.io/artifactory/cassandra/
>
> Enjoy!
>
> [1]: CHANGES.txt
>
> https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=CHANGES.txt;hb=refs/tags/cassandra-4.0-rc1
> [2]: NEWS.txt
> https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=NEWS.txt;hb=refs/tags/cassandra-4.0-rc1
> [3]: https://issues.apache.org/jira/browse/CASSANDRA
>

[RELEASE] Apache Cassandra 4.0-rc1 released

[Mick Semb Wever]

The Cassandra team is pleased to announce the release of Apache
Cassandra version 4.0-rc1.

Apache Cassandra is a fully distributed database. It is the right
choice when you need scalability and high availability without
compromising performance.

 http://cassandra.apache.org/

Downloads of source and binary distributions are listed in our download section:

 http://cassandra.apache.org/download/

This version is a release candidate[1] on the 4.0 series. As always,
please pay attention to the release notes[2] and Let us know[3] if you
were to encounter any problem.

Debian users shall note, as the docs are not yet updated, the bintray
location is now replaced with the ASF's JFrog Artifactory location:
 https://apache.jfrog.io/artifactory/cassandra/

Enjoy!

[1]: CHANGES.txt
https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=CHANGES.txt;hb=refs/tags/cassandra-4.0-rc1
[2]: NEWS.txt 
https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=NEWS.txt;hb=refs/tags/cassandra-4.0-rc1
[3]: https://issues.apache.org/jira/browse/CASSANDRA