[SOLR-14850] ExactStatsCache NullPointerException when shards.tolerant=true

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 8.6.2
• Fix Version/s: 8.6.3, 8.7
• Component/s: search
• Assignee: Andrzej Bialecki
• Reporter: Yevhen Tienkaiev
• Created: 09/Sep/20 20:44
• Updated: 21/Oct/20 11:52
• Resolved: 29/Sep/20 08:12

Description

All derived classes from ExactStatsCache fails if shards.tolerant set to true and some shard is down.

java.lang.NullPointerException
	at org.apache.solr.client.solrj.SolrResponse.getException(SolrResponse.java:59)
	at org.apache.solr.search.stats.ExactStatsCache.doMergeToGlobalStats(ExactStatsCache.java:104)
	at org.apache.solr.search.stats.StatsCache.mergeToGlobalStats(StatsCache.java:173)
	at org.apache.solr.handler.component.QueryComponent.updateStats(QueryComponent.java:713)
	at org.apache.solr.handler.component.QueryComponent.handleRegularResponses(QueryComponent.java:630)
	at org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:605)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:457)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:214)
	at org.apache.solr.core.SolrCore.execute(SolrCore.java:2606)
	at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:812)
	at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:588)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:415)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:345)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1596)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:590)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1300)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1215)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221)
	at org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:500)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
	at java.base/java.lang.Thread.run(Unknown Source)

Issue Links

• relates to: SOLR-8463 FacetComponent throws NPE when using shards.tolerant and a shard fails to respond
• links to: GitHub Pull Request #1864