RE: [C*2.1]memtable_allocation_type: offheap_objects

[aeljami.ext]

Thank you !

Another question please : In the blog post 
(http://www.datastax.com/dev/blog/off-heap-memtables-in-Cassandra-2-1), it is 
noted that offheap_objects it effective for small values like ints or uuids as 
well. offheap_buffers for the tables with string or blobs.

in my case, the tables contains many columns with string type. But in  
cassandra.yaml, it is noted that offheap_objects is: native memory, heap buffer 
nio Eliminating overhead.

I must in all cases use offheap_objects?

Thanks.
De : Jeff Jirsa [mailto:jeff.ji...@crowdstrike.com]
Envoyé : mercredi 9 mars 2016 17:13
À : user@cassandra.apache.org
Objet : Re: [C*2.1]memtable_allocation_type: offheap_objects

We use them. No signs of stability problems in 2.1 that we’ve attributed to 
offheap objects.


From: "aeljami@orange.com<mailto:aeljami@orange.com>"
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>"
Date: Wednesday, March 9, 2016 at 1:54 AM
To: user
Subject: [C*2.1]memtable_allocation_type: offheap_objects

Hi,

offheap_objects was removed in releases 3.2.x then reintroduced  in release 
3.4: I vould like to know if someone has used offheap_objects in Cassandra 2.1: 
stable or not, improvementobservedor not…

Thanks.
Ahmed


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Re: [C*2.1]memtable_allocation_type: offheap_objects

[Jeff Jirsa]

We use them. No signs of stability problems in 2.1 that we’ve attributed to 
offheap objects.


From:  "aeljami@orange.com"
Reply-To:  "user@cassandra.apache.org"
Date:  Wednesday, March 9, 2016 at 1:54 AM
To:  user
Subject:  [C*2.1]memtable_allocation_type: offheap_objects

Hi,

 

offheap_objects was removed in releases 3.2.x then reintroduced  in release 
3.4: I vould like to know if someone has used offheap_objects in Cassandra 2.1: 
stable or not, improvementobservedor not…

 

Thanks.

Ahmed

 
_

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smime.p7s
Description: S/MIME cryptographic signature

Re: [C*2.1]memtable_allocation_type: offheap_objects

[Jonathan Haddad]

Check out Al's Tuning Guide.  He discusses offheap objects.

https://tobert.github.io/pages/als-cassandra-21-tuning-guide.html

On Wed, Mar 9, 2016 at 1:54 AM  wrote:

> Hi,
>
>
>
> offheap_objects was removed in releases 3.2.x then reintroduced  in
> release 3.4: I vould like to know if someone has used offheap_objects in
> Cassandra 2.1: stable or not, improvement observed or not…
>
>
>
> Thanks.
>
> Ahmed
>
>
>
> _
>
> Ce message et ses pieces jointes peuvent contenir des informations 
> confidentielles ou privilegiees et ne doivent donc
> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu 
> ce message par erreur, veuillez le signaler
> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages 
> electroniques etant susceptibles d'alteration,
> Orange decline toute responsabilite si ce message a ete altere, deforme ou 
> falsifie. Merci.
>
> This message and its attachments may contain confidential or privileged 
> information that may be protected by law;
> they should not be distributed, used or copied without authorisation.
> If you have received this email in error, please notify the sender and delete 
> this message and its attachments.
> As emails may be altered, Orange is not liable for messages that have been 
> modified, changed or falsified.
> Thank you.
>
>

[C*2.1]memtable_allocation_type: offheap_objects

[aeljami.ext]

Hi,

offheap_objects was removed in releases 3.2.x then reintroduced  in release 
3.4: I vould like to know if someone has used offheap_objects in Cassandra 2.1: 
stable or not, improvement observed or not...

Thanks.
Ahmed


_

Ce message et ses pieces jointes peuvent contenir des informations 
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a l'expediteur et le detruire ainsi que les pieces jointes. Les messages 
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falsifie. Merci.

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