[infinispan-issues] [JBoss JIRA] (ISPN-5965) Add a new mode (READ ONLY) for Partition Handling

[Wolf-Dieter Fink (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-5965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wolf-Dieter Fink closed ISPN-5965.
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    Resolution: Duplicate Issue


> Add a new mode (READ ONLY) for Partition Handling
> -------------------------------------------------
>
>                 Key: ISPN-5965
>                 URL: https://issues.jboss.org/browse/ISPN-5965
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Core
>            Reporter: Wolf-Dieter Fink
>              Labels: partition_handling
>
> Without any PartitionHandling it is not possible to ensure the consistency of the cache.
> With PH enabled it depends whether the remaining partition has the majority or at least all owners for a particular key to be able to access the key.
> In some cases the prefered behaviour is to keep every entry readable but prevent from any change to keep consistency.
> So there should be a configuration option for the partition handling to switch all instances to READ_ONLY instead of AVAILABLE/DEGRADED.
> In this case each get will return the current value but each put will be rejected with a AvailabilityException
> This prevents from any rebalancing if one partition contains a majority and stay available.
> But in  case of a real instance crash it might need a human interaction to set the state back to AVAILABLE as the node will never come back to the cluster.



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