Nexus 2 : Task execution failure; Exception(s) happened during optimizeAllRepositoriesIndex()

Environment: Nexus Repository Manager OSS 2.15.1-02 on Linux VM

Observed problem was a new hosted maven repo created, added to existing Nexus group, added artifacts to repo, unable to resolve using the group. Navigating the “Browse Storage” reports “com/path (not found)”. Took action to rebuild index on repo and then on group.

Googling for " optimizeAllRepositoriesIndex() returns nothing, so no idea how to proceed on this error. Any guidance is appreciated.

This may be related to prior issue: Nexus 2 : Task execution failure; Error rendering template /repositoryContentHtml.vm, though it’s a different repo (in same instance) in play.

Task ID: 18
Task Name: Optimize All Indexes
Stack trace:
java.io.IOException: Exception(s) happened during optimizeAllRepositoriesIndex()
        at org.sonatype.nexus.index.DefaultIndexerManager.optimizeAllRepositoriesIndex(DefaultIndexerManager.java:1601)
        at org.sonatype.nexus.index.tasks.OptimizeIndexTask.doRun(OptimizeIndexTask.java:56)
        at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:163)
        at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:418)
        at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44)
        at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:832)
        Suppressed: java.io.EOFException: read past EOF: anonymous BuffereIndexInput
                at org.apache.lucene.store.BufferedIndexInput.readBytes(BufferedIndexInput.java:155)
                at org.apache.lucene.store.BufferedIndexInput.readBytes(BufferedIndexInput.java:111)
                at org.apache.lucene.store.DataOutput.copyBytes(DataOutput.java:132)
                at org.apache.lucene.index.FieldsWriter.addRawDocuments(FieldsWriter.java:228)
                at org.apache.lucene.index.SegmentMerger.copyFieldsWithDeletions(SegmentMerger.java:266)
                at org.apache.lucene.index.SegmentMerger.mergeFields(SegmentMerger.java:223)
                at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:107)
                at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4263)
                at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3908)
                at org.apache.lucene.index.SerialMergeScheduler.merge(SerialMergeScheduler.java:37)
                at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:2747)
                at org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:2538)
                at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2400)
                at org.apache.maven.index.context.DefaultIndexingContext.optimize(DefaultIndexingContext.java:527)
                at org.sonatype.nexus.index.NexusIndexingContext.optimize(NexusIndexingContext.java:68)
                at org.sonatype.nexus.index.DefaultIndexerManager$17.run(DefaultIndexerManager.java:1657)
                at org.sonatype.nexus.index.DefaultIndexerManager.sharedSingle(DefaultIndexerManager.java:2320)
                at org.sonatype.nexus.index.DefaultIndexerManager.optimizeRepositoryIndex(DefaultIndexerManager.java:1647)
                at org.sonatype.nexus.index.DefaultIndexerManager.optimizeAllRepositoriesIndex(DefaultIndexerManager.java:1594)
                ... 12 more