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https://issues.apache.org/jira/browse/SOLR-6623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171344#comment-14171344
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Xu Zhang commented on SOLR-6623:
--------------------------------
We can reproduce the NPE by letting Method SolrQueryTimeoutImpl:shouldExit()
return true.
> NPE in StoredFieldsShardResponseProcessor possible when using TIME_ALLOWED
> param
> --------------------------------------------------------------------------------
>
> Key: SOLR-6623
> URL: https://issues.apache.org/jira/browse/SOLR-6623
> Project: Solr
> Issue Type: Bug
> Reporter: Hoss Man
> Assignee: Anshum Gupta
>
> I'm not sure if this is an existing bug, or something new caused by changes
> in SOLR-5986, but it just poped up in jenkinds today...
> http://jenkins.thetaphi.de/job/Lucene-Solr-5.x-MacOSX/1844
> Revision: 1631656
> {noformat}
> [junit4] 2> NOTE: reproduce with: ant test
> -Dtestcase=TestDistributedGrouping -Dtests.method=testDistribSearch
> -Dtests.seed=E9460FA0973F6672 -Dtests.slow=true -Dtests.locale=cs
> -Dtests.timezone=Indian/Mayotte -Dtests.file.encoding=ISO-8859-1
> [junit4] ERROR 55.9s | TestDistributedGrouping.testDistribSearch <<<
> [junit4] > Throwable #1:
> org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:
> java.lang.NullPointerException
> [junit4] > at
> org.apache.solr.search.grouping.distributed.responseprocessor.StoredFieldsShardResponseProcessor.process(StoredFieldsShardResponseProcessor.java:45)
> [junit4] > at
> org.apache.solr.handler.component.QueryComponent.handleGroupedResponses(QueryComponent.java:708)
> [junit4] > at
> org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:691)
> [junit4] > at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:337)
> [junit4] > at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:136)
> [junit4] > at
> org.apache.solr.core.SolrCore.execute(SolrCore.java:1983)
> [junit4] > at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:773)
> [junit4] > at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:408)
> [junit4] > at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:202)
> [junit4] > at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
> [junit4] > at
> org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:137)
> [junit4] > at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
> [junit4] > at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
> [junit4] > at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
> [junit4] > at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
> [junit4] > at
> org.eclipse.jetty.server.handler.GzipHandler.handle(GzipHandler.java:301)
> [junit4] > at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1077)
> [junit4] > at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
> [junit4] > at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
> [junit4] > at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
> [junit4] > at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> [junit4] > at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> [junit4] > at
> org.eclipse.jetty.server.Server.handle(Server.java:368)
> [junit4] > at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
> [junit4] > at
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)
> [junit4] > at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)
> [junit4] > at
> org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
> [junit4] > at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
> [junit4] > at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
> [junit4] > at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
> [junit4] > at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
> [junit4] > at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> [junit4] > at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> [junit4] > at java.lang.Thread.run(Thread.java:745)
> [junit4] > at
> __randomizedtesting.SeedInfo.seed([E9460FA0973F6672:68A081B8E060064E]:0)
> [junit4] > at
> org.apache.solr.client.solrj.impl.HttpSolrServer.executeMethod(HttpSolrServer.java:569)
> [junit4] > at
> org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:215)
> [junit4] > at
> org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:211)
> [junit4] > at
> org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:91)
> [junit4] > at
> org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:301)
> [junit4] > at
> org.apache.solr.BaseDistributedSearchTestCase.queryServer(BaseDistributedSearchTestCase.java:512)
> [junit4] > at
> org.apache.solr.TestDistributedGrouping.simpleQuery(TestDistributedGrouping.java:274)
> [junit4] > at
> org.apache.solr.TestDistributedGrouping.doTest(TestDistributedGrouping.java:262)
> [junit4] > at
> org.apache.solr.BaseDistributedSearchTestCase.testDistribSearch(BaseDistributedSearchTestCase.java:875)
> [junit4] > at java.lang.Thread.run(Thread.java:745)
> {noformat}
> top level query executed by the test...
> {noformat}
> // Can't validate the response, but can check if no errors occur.
> simpleQuery("q", "*:*", "rows", 100, "fl", "id," + i1, "group", "true",
> "group.query", t1 + ":kings OR " + t1 + ":eggs", "group.limit", 10, "sort",
> i1 + " asc, id asc", CommonParams.TIME_ALLOWED, 1);
> {noformat}
> Line where NPE happens...
> {code}
> SolrDocumentList docs =
> (SolrDocumentList)srsp.getSolrResponse().getResponse().get("response");
> String uniqueIdFieldName =
> rb.req.getSchema().getUniqueKeyField().getName();
> for (SolrDocument doc : docs) { // <-- LINE 45
> Object id = doc.getFieldValue(uniqueIdFieldName).toString();
> ShardDoc shardDoc = rb.resultIds.get(id);
> {code}
> ...so i'm guessing the problem here is that in some situations where
> TIME_ALLOWED is exceeded, we can now see processing continue with a null set
> of docs in the response?
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