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https://issues.apache.org/jira/browse/OAK-6001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960686#comment-15960686
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Alex Parvulescu commented on OAK-6001:
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I think there's a method that was forgotten here, the FileStore's 
GarbageCollector#collectBulkReferences seems unused? [0]

[0] 
https://github.com/apache/jackrabbit-oak/blob/trunk/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/file/FileStore.java#L858

> Remove unused code from FileStore and TarWriter
> -----------------------------------------------
>
>                 Key: OAK-6001
>                 URL: https://issues.apache.org/jira/browse/OAK-6001
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Francesco Mari
>            Assignee: Francesco Mari
>             Fix For: 1.7.0, 1.8
>
>
> {{FileStore.GarbageCollector#collectBulkReferences}} looks into the currently 
> active {{TarWriter}} for references. At the time this method is invoked, the 
> currently active {{TarWriter}} is always empty.
> Slightly before inspecting the {{TarWriter}}, {{FileStore#newWriter}} is 
> called to flush the content of the current {{TarWriter}} and to create a 
> fresh one. For this reason, inspecting the {{TarWriter}} in 
> {{FileStore.GarbageCollector#collectBulkReferences}} is unnecessary - the 
> graph of the {{TarWriter}} is always empty. Those lines of code can be safely 
> removed.



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