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From Tomek Rękawek (JIRA) <j...@apache.org>
Subject [jira] [Commented] (OAK-5179) MultiplexingNodeStoreService does not register an OSGi service for oak.api.Descriptors
Date Fri, 02 Dec 2016 08:44:58 GMT

    [ https://issues.apache.org/jira/browse/OAK-5179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15714483#comment-15714483
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Tomek Rękawek commented on OAK-5179:
------------------------------------

[~rombert], I actually like the third approach (with registerDescriptors). It works and requires
just one extra property in the SegmentNodeStoreFactory configuration. I prefer that over refactoring
NodeProvider interface or adding new marking interfaces.

> MultiplexingNodeStoreService does not register an OSGi service for oak.api.Descriptors
> --------------------------------------------------------------------------------------
>
>                 Key: OAK-5179
>                 URL: https://issues.apache.org/jira/browse/OAK-5179
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core
>            Reporter: Robert Munteanu
>             Fix For: 1.5.15
>
>         Attachments: 0001-OAK-5179-MultiplexingNodeStoreService-does-not-regis.patch,
0001-OAK-5179-MultiplexingNodeStoreService-does-not-regis.patch, 0001-OAK-5179-MultiplexingNodeStoreService-does-not-regis.patch
>
>
> When starting up Apache Sling with a MultiplexingNodeStore backend Sling's discovery
mechanism fails to read the repository descriptors.
> {noformat}19.11.2016 13:43:06.101 *ERROR* [discovery.connectors.common.runner.331bcf42-1d0d-4b53-bf1f-c7e9df060758.discoveryLiteCheck]
org.apache.sling.discovery.oak.cluster.OakClusterViewService getLocalClusterView: repository
exception: java.lang.Exception: No Descriptor value available
> java.lang.Exception: No Descriptor value available
>         at org.apache.sling.discovery.commons.providers.spi.base.DiscoveryLiteDescriptor.getDescriptorFrom(DiscoveryLiteDescriptor.java:45)
>         at org.apache.sling.discovery.oak.cluster.OakClusterViewService.getLocalClusterView(OakClusterViewService.java:112)
>         at org.apache.sling.discovery.base.commons.BaseDiscoveryService.getTopology(BaseDiscoveryService.java:77)
>         at org.apache.sling.discovery.oak.OakDiscoveryService.checkForTopologyChange(OakDiscoveryService.java:657)
>         at org.apache.sling.discovery.oak.pinger.OakViewChecker.discoveryLiteCheck(OakViewChecker.java:217)
>         at org.apache.sling.discovery.oak.pinger.OakViewChecker.access$000(OakViewChecker.java:62)
>         at org.apache.sling.discovery.oak.pinger.OakViewChecker$1.run(OakViewChecker.java:193)
>         at org.apache.sling.discovery.base.commons.PeriodicBackgroundJob.safelyRun(PeriodicBackgroundJob.java:86)
>         at org.apache.sling.discovery.base.commons.PeriodicBackgroundJob.run(PeriodicBackgroundJob.java:77)
>         at java.lang.Thread.run(Thread.java:745){noformat}
> I noticed that these descriptors are registered as OSGi services for the other stores
- Segment ( 'old' and tar ), Document.
> The MultiplexingNodeStoreService should register these as well.



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