Regarding your second question: looks like you don't actually need
persistence. Its purpose is the opposite: to save cache data between
restarts.
If you use persistence to store more data than RAM available, then you can
enable swap space:
https://apacheignite.readme.io/v1.9/docs/off-heap-memory#section-swap-space

вт, 29 авг. 2017 г. в 20:06, ezhuravlev <[email protected]>:

> Hi,
>
> 1) There is no possibility to limit Persistent Store size right now, but
> you
> always can use separate disk volume with size 300GB for your case to use it
> for Persistent Store.
>
> 2) Well it's not usual to use case, but after stopping node you can clear
> data from work folder or just invoke removeAll on cache
>
> Evgenii
>
>
>
> --
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> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>

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