[ https://issues.apache.org/jira/browse/OAK-1817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chetan Mehrotra updated OAK-1817:
---------------------------------
Fix Version/s: 1.0.1
> NPE in MarkSweepGarbageCollector.saveBatchToFile during Datastore GC with FileDataStore
> ---------------------------------------------------------------------------------------
>
> Key: OAK-1817
> URL: https://issues.apache.org/jira/browse/OAK-1817
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: blob
> Affects Versions: 0.20
> Reporter: Konrad Windszus
> Assignee: Chetan Mehrotra
> Fix For: 1.0.1, 1.1
>
> Attachments: NodeAndDataStoreOsgiConfig.zip, OAK-1817.patch
>
>
> During running a datastore garbage collection on a Jackrabbit 2 FileDataStore (org.apache.jackrabbit.oak.plugins.blob.datastore.FileDataStore,
see http://jackrabbit.apache.org/oak/docs/osgi_config.html) an NPE is thrown
> {code}
> 13.05.2014 17:50:16.944 *ERROR* [qtp1416657193-147] org.apache.jackrabbit.oak.management.ManagementOperation
Blob garbage collection failed
> java.lang.RuntimeException: Error in retrieving references
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector$1.addReference(MarkSweepGarbageCollector.java:395)
> at org.apache.jackrabbit.oak.plugins.segment.Segment.collectBlobReferences(Segment.java:248)
> at org.apache.jackrabbit.oak.plugins.segment.SegmentTracker.collectBlobReferences(SegmentTracker.java:178)
> at org.apache.jackrabbit.oak.plugins.segment.SegmentBlobReferenceRetriever.collectReferences(SegmentBlobReferenceRetriever.java:38)
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector.iterateNodeTree(MarkSweepGarbageCollector.java:361)
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector.mark(MarkSweepGarbageCollector.java:201)
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector.markAndSweep(MarkSweepGarbageCollector.java:173)
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector.collectGarbage(MarkSweepGarbageCollector.java:149)
> at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStoreService$2.collectGarbage(SegmentNodeStoreService.java:185)
> at org.apache.jackrabbit.oak.plugins.blob.BlobGC$1.call(BlobGC.java:68)
> at org.apache.jackrabbit.oak.plugins.blob.BlobGC$1.call(BlobGC.java:64)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NullPointerException: null
> at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:192)
> at com.google.common.base.Joiner.toString(Joiner.java:436)
> at com.google.common.base.Joiner.appendTo(Joiner.java:108)
> at com.google.common.base.Joiner.appendTo(Joiner.java:152)
> at com.google.common.base.Joiner.join(Joiner.java:193)
> at com.google.common.base.Joiner.join(Joiner.java:183)
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector.saveBatchToFile(MarkSweepGarbageCollector.java:317)
> at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector$1.addReference(MarkSweepGarbageCollector.java:391)
> ... 14 common frames omitted
> {code}
> Attached you find the OSGi config for both the nodestore and the datastore.
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