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https://issues.apache.org/jira/browse/OAK-5461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amit Jain resolved OAK-5461.
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Resolution: Fixed
Fixed with http://svn.apache.org/viewvc?rev=1779140&view=rev
> [BlobGC] BlobIdTracker remove() should merge generations
> --------------------------------------------------------
>
> Key: OAK-5461
> URL: https://issues.apache.org/jira/browse/OAK-5461
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: blob
> Reporter: Amit Jain
> Assignee: Amit Jain
> Fix For: 1.5.18, 1.6
>
>
> On a new setup if the blob gc is executed before taking a snapshot then the
> blobs ids are retrieved from the datastore and GC removes are synchronized
> with this retrieved file. But these removed blob ids may also be present in
> the tracker generation and therefore may get resurrected on next snapshot.
> This will happen as no snapshot has taken place which is possible if the
> {{blobGcMaxAgeInSecs}} is configured to be less than the
> {{blobTrackSnapshotIntervalInSecs}}.
> The effect of the above situation would be that the removed blob ids would
> always turn up as GC candidates until the tracker is reset and log a warning
> during GC as they are not present anymore.
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