ignite-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ilya Kasnacheev <ilya.kasnach...@gmail.com>
Subject Re: Ignite Partitioned Cache / Use for an in-memory transaction-log
Date Tue, 06 Aug 2019 13:20:21 GMT
Hello!

You can use ignite.affinity(cacheName).mapKeyToNode(key): it returns
ClusterNode which is primary for this key.

Not sure that I understand you about the quorum.

Regards,
-- 
Ilya Kasnacheev


вт, 6 авг. 2019 г. в 15:47, Johannes Lichtenberger <
johannes.lichtenberger@unitedplanet.com>:

> Hi,
>
> can I somehow query on which cluster-nodes a partitioned cache stores
> values for specific keys? I might want to use a cache for replicating an
> in-memory transaction log (which does not have to be persisted) to
> replicate a document of a NoSQL document store to a few nodes.
>
> Thus, instead of a local cache I'd simply write into an ignite cache and
> then would like to query which cluster-nodes have stored a specific key
> (for instance the document name). So for instance I could tell a load
> balancer for reads to read documents from one of the backup replicas.
>
> During a transaction commit I would also need this information to know
> where to send an event to... to commit the transaction. And somehow I'd
> love to wait for a quorum of nodes if the transaction really has
> committed or it needs to roll back.
>
> kind regards
>
> Johannes
>
>

Mime
View raw message