[NIFI-8017] NPEx at org.apache.nifi.provenance.index.lucene. IndexDirectoryManager:486

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.13.0
• Assignee: Denes Arvay
• Reporter: Denes Arvay
• Created: 17/Nov/20 14:33
• Updated: 19/Nov/20 21:02
• Resolved: 19/Nov/20 21:02

Description

When upgrading to NiFi 1.10 I bumped into the following exception that blocks the Lucene index migration to successfully run:

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) 

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

Issue Links

• links to: GitHub Pull Request #4675