[SOLR-10336] NPE during queryCache warming

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.4.2
• Fix Version/s: 8.5
• Assignee: Unassigned
• Reporter: Markus Jelsma
• Created: 21/Mar/17 18:00
• Updated: 24/Mar/20 12:45
• Resolved: 15/Mar/20 14:13

Description

Regular cache warming stumbles on this NPE. It seems to be related to SOLR-9104, it is the same collection and the query that fails the cache warmer is similar to that of SOLR-9104, i.e, two CollapsingQParsers.

Error during auto-warming of key:org.apache.solr.search.QueryResultKey@fe9769ca:java.lang.NullPointerException
	at org.apache.solr.search.CollapsingQParserPlugin$IntScoreCollector.finish(CollapsingQParserPlugin.java:816)
	at org.apache.solr.search.CollapsingQParserPlugin$IntScoreCollector.finish(CollapsingQParserPlugin.java:853)
	at org.apache.solr.search.SolrIndexSearcher.buildAndRunCollectorChain(SolrIndexSearcher.java:256)
	at org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:1823)
	at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1640)
	at org.apache.solr.search.SolrIndexSearcher.lambda$initRegenerators$3(SolrIndexSearcher.java:604)
	at org.apache.solr.search.LFUCache.warm(LFUCache.java:188)
	at org.apache.solr.search.SolrIndexSearcher.warm(SolrIndexSearcher.java:2376)
	at org.apache.solr.core.SolrCore.lambda$getSearcher$2(SolrCore.java:2054)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:229)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

Issue Links

• is related to: SOLR-8807 NPE during spell checking when result collapsing is activated and index got more than one segment.
• is related to: SOLR-9104 NPE in CollapsingQParser when two fq={!collapse} and zero results
• is related to: SOLR-14073 Fix segment look ahead NPE in CollapsingQParserPlugin