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Posted to user@ignite.apache.org by breischl <br...@gmail.com> on 2018/05/23 15:06:58 UTC

Setting DefaultDataRegion to zero size

I'm working on a project where we're using Ignite primarily as a cache for
large & complex objects that we need in their entirety. Based on reading
elsewhere it seems like our performance would be best if we didn't use
off-heap storage at all. To that end, would it make sense (or even work) for
me to effectively disable off-heap sotrage by setting the default DataRegion
to a zero size? Something roughly like the following:

<property name="dataStorageConfiguration">
  <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
    
    <property name="defaultDataRegionConfiguration">
      <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
        <property name="name" value="Default_Region"/>

        
        <property name="maxSize" value="0"/>

      </bean>
    </property>
  </bean>
</property>

Thanks!



--
Sent from: http://apache-ignite-users.70518.x6.nabble.com/

Re: Setting DefaultDataRegion to zero size

Posted by Evgenii Zhuravlev <e....@gmail.com>.

There is a validation for region size, so, you can't even create region
with the less than 10 mb size. Off-heap can't be disabled at all, it's a
core part of data grid architecture.

Evgenii

2018-05-23 22:13 GMT+03:00 breischl <br...@gmail.com>:

> Hi,
>   Thanks for the reply. We have enabled onHeap cache, and I know there's no
> way to explicitly disable off heap storage. But if I set the default
> DataRegion to zero size will that /effectively/ disable off-heap storage
> for
> all of our data? And would doing that cause anything else to fail?
>
> Thanks!
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>

Re: Setting DefaultDataRegion to zero size

Posted by breischl <br...@gmail.com>.

Hi,
  Thanks for the reply. We have enabled onHeap cache, and I know there's no
way to explicitly disable off heap storage. But if I set the default
DataRegion to zero size will that /effectively/ disable off-heap storage for
all of our data? And would doing that cause anything else to fail?

Thanks!



--
Sent from: http://apache-ignite-users.70518.x6.nabble.com/

Re: Setting DefaultDataRegion to zero size

Posted by Evgenii Zhuravlev <e....@gmail.com>.

Hi,

You can't disable off-heap storage since version 2.0. However, you can use
additional onHeap cache for the values stored in offheap using
CacheConfiguration.onHeapCacheEnabled:
https://ignite.apache.org/releases/latest/javadoc/org/apache/ignite/configuration/CacheConfiguration.html#isOnheapCacheEnabled--

Evgenii

2018-05-23 18:06 GMT+03:00 breischl <br...@gmail.com>:

> I'm working on a project where we're using Ignite primarily as a cache for
> large & complex objects that we need in their entirety. Based on reading
> elsewhere it seems like our performance would be best if we didn't use
> off-heap storage at all. To that end, would it make sense (or even work)
> for
> me to effectively disable off-heap sotrage by setting the default
> DataRegion
> to a zero size? Something roughly like the following:
>
> <property name="dataStorageConfiguration">
>   <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
>
>     <property name="defaultDataRegionConfiguration">
>       <bean class="org.apache.ignite.configuration.
> DataRegionConfiguration">
>         <property name="name" value="Default_Region"/>
>
>
>         <property name="maxSize" value="0"/>
>
>       </bean>
>     </property>
>   </bean>
> </property>
>
> Thanks!
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>