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https://issues.apache.org/jira/browse/IGNITE-2396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Goncharuk updated IGNITE-2396:
-------------------------------------
Labels: community (was: )
> Dynamic cache changes are not tracked by service processor
> ----------------------------------------------------------
>
> Key: IGNITE-2396
> URL: https://issues.apache.org/jira/browse/IGNITE-2396
> Project: Ignite
> Issue Type: Bug
> Reporter: Alexey Goncharuk
> Labels: community
>
> Currently service processor handles only discovery node join/leave/fail
> events. Now consider the following two scenarios:
> ---------------------
> - N nodes are started. Topology version is (N, 0)
> - A dynamic cache is created. Topology version is (N, 1)
> - An affinity singleton service is deployed.
> On step (3), when assignment is calculated, service processor uses topology
> version (N, 0) (see
> org.apache.ignite.internal.processors.service.GridServiceProcessor.DeploymentListener#onDeployment).
> As a result, no affinity nodes are returned for assignment and service is
> not deployed.
> ---------------------
> - N nodes are started. Topology version is (N, 0)
> - An affinity singleton service is deployed.
> - A dynamic cache is created. Topology version is (N, 1)
> On step (3) custom discovery event is generated, but it is not handled by
> service processor, so no reassignment logic is triggered and service is not
> deployed.
> Proposed solution is as follows:
> - Use a correct topology version for service deployment
> (ctx.discovery().topologyVersionEx()).
> - Event listener should handle custom events that trigger dynamic cache
> start and stop.
> - Additionally need to investigate whether reassignment logic should be in
> any way synchronized with the partition exchange future completion.
> org.apache.ignite.internal.processors.service.IgniteServiceDynamicCachesSelfTest
> is added to master. Need to add it to the services test suite once the fix
> is implemented.
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