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Posted to oak-issues@jackrabbit.apache.org by "Francesco Mari (JIRA)" <ji...@apache.org> on 2016/03/03 19:28:18 UTC

[jira] [Created] (OAK-4089) The standby store shouldn't start the observation subsystem

Francesco Mari created OAK-4089:
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             Summary: The standby store shouldn't start the observation subsystem
                 Key: OAK-4089
                 URL: https://issues.apache.org/jira/browse/OAK-4089
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: tarmk-standby
            Reporter: Francesco Mari
            Assignee: Francesco Mari
             Fix For: 1.6


The current implementation of {{SegmentNodeStore}} unconditionally instantiates a {{ChangeDispatcher}} referencing the root node of the repository at the time of instantiation.

When this occurs in the context of the standby store, the {{ChangeDispatcher}} is never notified for changes in the repository content, and the initial repository root is permanently referenced by the {{ChangeDispatcher}}. This prevents many segments from being correctly cleaned up from the standby store.

It would be more appropriate not to instantiate the observation subsystem at all in the context of the standby store, thus preventing spurious references to {{SegmentId}} instances to float in memory.



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