Amit Jain created OAK-5461:
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Summary: [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
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 file 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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