[SOLR-16220] Documentation leads to NPE Missing SslContextFactory for SolrJ client

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 9.0
• Component/s: documentation, SolrJ
• Labels: newdev

Environment

JDK used is:

openjdk 11.0.14.1 2022-02-08 LTS
OpenJDK Runtime Environment Zulu11.54+26-SA (build 11.0.14.1+1-LTS)
OpenJDK 64-Bit Server VM Zulu11.54+26-SA (build 11.0.14.1+1-LTS, mixed mode)

• Assignee: Unassigned
• Reporter: Gunnar Wagenknecht
• Created: 30/May/22 09:54
• Updated: 03/Apr/23 15:56

Description

Following the documentation here:
https://solr.apache.org/guide/solr/latest/deployment-guide/solrj.html

 

This code leads to an NPE:

Http2SolrClient mavenCentralRepo = new Http2SolrClient.Builder("https://search.maven.org/solrsearch").build();

final SolrQuery query = new SolrQuery("fc:" + className);
query.setRows(20);

QueryResponse response = mavenCentralRepo.query(query);

NPE:

java.lang.NullPointerException: Missing SslContextFactory
	at java.base/java.util.Objects.requireNonNull(Objects.java:246)
	at org.eclipse.jetty.io.ssl.SslClientConnectionFactory.<init>(SslClientConnectionFactory.java:57)
	at org.eclipse.jetty.client.HttpClient.newSslClientConnectionFactory(HttpClient.java:1208)
	at org.eclipse.jetty.client.HttpClient.newSslClientConnectionFactory(HttpClient.java:1214)
	at org.eclipse.jetty.client.HttpDestination.newSslClientConnectionFactory(HttpDestination.java:148)
	at org.eclipse.jetty.client.HttpDestination.newSslClientConnectionFactory(HttpDestination.java:154)
	at org.eclipse.jetty.client.HttpDestination.<init>(HttpDestination.java:94)
	at org.eclipse.jetty.client.MultiplexHttpDestination.<init>(MultiplexHttpDestination.java:25)
	at org.eclipse.jetty.http2.client.http.HttpDestinationOverHTTP2.<init>(HttpDestinationOverHTTP2.java:32)
	at org.eclipse.jetty.http2.client.http.HttpClientTransportOverHTTP2.newHttpDestination(HttpClientTransportOverHTTP2.java:128)
	at org.eclipse.jetty.client.HttpClient.lambda$resolveDestination$0(HttpClient.java:575)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705)
	at org.eclipse.jetty.client.HttpClient.resolveDestination(HttpClient.java:573)
	at org.eclipse.jetty.client.HttpClient.resolveDestination(HttpClient.java:551)
	at org.eclipse.jetty.client.HttpClient.send(HttpClient.java:599)
	at org.eclipse.jetty.client.HttpRequest.sendAsync(HttpRequest.java:778)
	at org.eclipse.jetty.client.HttpRequest.send(HttpRequest.java:765)
	at org.apache.solr.client.solrj.impl.Http2SolrClient.request(Http2SolrClient.java:448)
	at org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:217)
	at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:927)
	at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:940)

I think there is a bug in Http2SolrClient somewhere. Such URLs should be supported out of the box on a Java 11 JDK without requiring users to provide system properties or other custom initialization. Otherwise it should be documented but I couldn't find anything related to TLS/SSL configuration in the doc mentioned above.