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https://issues.apache.org/jira/browse/OAK-9700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17654331#comment-17654331
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Julian Reschke commented on OAK-9700:
-------------------------------------
trunk: (1.44.0)
[64c0bd4268|https://github.com/apache/jackrabbit-oak/commit/64c0bd4268bb651d7e0dd432ecdfabed454c4138]
[e9cf5a65e2|https://github.com/apache/jackrabbit-oak/commit/e9cf5a65e2b380e86cc71ee3299b6be31670e0e2]
[c5d9797c4c|https://github.com/apache/jackrabbit-oak/commit/c5d9797c4c33276780bcd72a1d5fed3926bce4f5]
> RevisionGC may fail with NPE
> ----------------------------
>
> Key: OAK-9700
> URL: https://issues.apache.org/jira/browse/OAK-9700
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: documentmk
> Affects Versions: 1.8.0, 1.22.0, 1.42.0
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Priority: Minor
> Labels: candidate_oak_1_22, candidate_oak_1_8
> Fix For: 1.44.0
>
>
> In some rare and strange situation RevisionGC may throw a
> NullPointerException when the cache contains a document with an invalid or no
> id.
> The stacktrace looks like the following.
> {noformat}
> Caused by: java.lang.NullPointerException
> at
> org.apache.jackrabbit.oak.plugins.document.util.Utils.getDepthFromId(Utils.java:414)
> at
> org.apache.jackrabbit.oak.plugins.document.NodeDocumentIdComparator.compare(NodeDocumentIdComparator.java:38)
> at
> org.apache.jackrabbit.oak.plugins.document.NodeDocumentIdComparator.compare(NodeDocumentIdComparator.java:30)
> at java.util.TimSort.binarySort(TimSort.java:296)
> at java.util.TimSort.sort(TimSort.java:221)
> at java.util.Arrays.sort(Arrays.java:1512)
> at java.util.ArrayList.sort(ArrayList.java:1464)
> at java.util.Collections.sort(Collections.java:177)
> at
> org.apache.jackrabbit.oak.commons.sort.StringSort.sort(StringSort.java:98)
> at
> org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector$DeletedDocsGC.ensureSorted(VersionGarbageCollector.java:987)
> at
> org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector$DeletedDocsGC.access$800(VersionGarbageCollector.java:617)
> at
> org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector$GCJob.collectDeletedDocuments(VersionGarbageCollector.java:594)
> at
> org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector$GCJob.gc(VersionGarbageCollector.java:507)
> at
> org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector$GCJob.run(VersionGarbageCollector.java:476)
> at
> org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector.gc(VersionGarbageCollector.java:144)
> {noformat}
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