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https://issues.apache.org/jira/browse/NIFI-8017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mark Payne resolved NIFI-8017.
------------------------------
Resolution: Fixed
> NPEx at org.apache.nifi.provenance.index.lucene. IndexDirectoryManager:486
> --------------------------------------------------------------------------
>
> Key: NIFI-8017
> URL: https://issues.apache.org/jira/browse/NIFI-8017
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Denes Arvay
> Assignee: Denes Arvay
> Priority: Major
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When upgrading to NiFi 1.10 I bumped into the following exception that blocks
> the Lucene index migration to successfully run:
> {code:java}
> o.a.n.p.index.lucene.MigrateDefunctIndex Failed to migrate event index
> /data/disk6/nifi/provenance_repository/index-1600074261043 to
> /data/disk6/nifi/provenance_repository/temp-lucene-8-index-1600074261043
> after successfully re-indexing 0 events
> java.lang.NullPointerException: null
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:486)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:491)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:491)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:491)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:491)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:491)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.isParent(IndexDirectoryManager.java:491)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.getPartitionName(IndexDirectoryManager.java:477)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.insertIndexDirectory(IndexDirectoryManager.java:461)
> at
> org.apache.nifi.provenance.index.lucene.IndexDirectoryManager.replaceDirectory(IndexDirectoryManager.java:438)
> at
> org.apache.nifi.provenance.index.lucene.MigrateDefunctIndex.run(MigrateDefunctIndex.java:86)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$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:748) {code}
> It seems that a null check is missing at [1]
>
> [1]
> [https://github.com/apache/nifi/blob/main/nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/main/java/org/apache/nifi/provenance/index/lucene/IndexDirectoryManager.java#L486]
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