Dependencies missing when using solr-core-10.0.0 instead of 9.10.1

Thorsten Heit <[email protected]> Thu, 12 Mar 2026 10:32:09 +0100
Newsgroups	gmane.comp.jakarta.turbine.maven.user
Message-ID	<[email protected]>
Hi,

I have asked this on the Solr mailing list before, but got no helpful 
answer so far. I hope someone here as a glue what's going on:


I have written an internal library that uses SolrJ for connecting to a 
(remote) Solr server. The library is a multi-module project consisting 
of several parts; the interesting ones are:

- a common module that represents the bridge to Solr (by using SolrJ)
- a test module that implements JUnit tests and an integration test; 
uses jetty-maven-plugin to start a local Solr server with an empty 
database before the IT is executed


Actually I'm using the following dependencies in the IT module pom 
(unnecessary parts omitted):

<dependencies>
     <dependency>
         <groupId>org.apache.logging.log4j</groupId>
         <artifactId>log4j-core</artifactId>
     </dependency>
     <dependency>
         <groupId>${project.groupId}</groupId>
         <!-- bridge to connect to Solr: -->
         <artifactId>solr-connector-common</artifactId>
         <version>${project.version}</version>
     </dependency>
     <dependency>
         <groupId>org.apache.solr</groupId>
         <artifactId>solr-core</artifactId>
         <version>${solr.version}</version>
     </dependency>

     <dependency>
         <groupId>org.junit.jupiter</groupId>
         <artifactId>junit-jupiter-engine</artifactId>
         <scope>test</scope>
     </dependency>
     <dependency>
         <groupId>org.junit.jupiter</groupId>
         <artifactId>junit-jupiter-params</artifactId>
         <scope>test</scope>
     </dependency>
</dependencies>

(the property "solr.version" is defined in the parent pom)


With solr-core-9.10.1 "mvn dependency:tree" gives me

(...)
[INFO] +- org.apache.solr:solr-core:jar:9.10.1:compile
[INFO] |  +- org.apache.lucene:lucene-core:jar:9.12.2:compile
[INFO] |  +- org.apache.lucene:lucene-analysis-common:jar:9.12.2:compile
[INFO] |  +- org.apache.lucene:lucene-queries:jar:9.12.3:compile
(...)
[INFO] |  \- org.xerial.snappy:snappy-java:jar:1.1.10.8:runtime
[INFO] +- org.eclipse.jdt:org.eclipse.jdt.annotation:jar:2.4.100:provided
[INFO] +- org.junit.jupiter:junit-jupiter-engine:jar:6.0.3:test
[INFO] |  +- org.junit.platform:junit-platform-engine:jar:6.0.3:test
[INFO] |  |  +- org.opentest4j:opentest4j:jar:1.3.0:test
[INFO] |  |  \- org.junit.platform:junit-platform-commons:jar:6.0.3:test
[INFO] |  +- org.junit.jupiter:junit-jupiter-api:jar:6.0.3:test
[INFO] |  +- org.apiguardian:apiguardian-api:jar:1.1.2:test
[INFO] |  \- org.jspecify:jspecify:jar:1.0.0:runtime
[INFO] \- org.junit.jupiter:junit-jupiter-params:jar:6.0.3:test
(...)


What puzzles me that the same command with solr-core-10.0.0 only shows

(...)
[INFO] +- org.apache.solr:solr-core:jar:10.0.0:compile
[INFO] +- org.eclipse.jdt:org.eclipse.jdt.annotation:jar:2.4.100:provided
[INFO] +- org.junit.jupiter:junit-jupiter-engine:jar:6.0.3:test
[INFO] |  +- org.junit.platform:junit-platform-engine:jar:6.0.3:test
[INFO] |  |  +- org.opentest4j:opentest4j:jar:1.3.0:test
[INFO] |  |  \- org.junit.platform:junit-platform-commons:jar:6.0.3:test
[INFO] |  +- org.junit.jupiter:junit-jupiter-api:jar:6.0.3:test
[INFO] |  +- org.apiguardian:apiguardian-api:jar:1.1.2:test
[INFO] |  \- org.jspecify:jspecify:jar:1.0.0:runtime
[INFO] \- org.junit.jupiter:junit-jupiter-params:jar:6.0.3:test
(...)

i.e. no dependencies at all in solr-core-10.0.0 in the tree. Therefore 
the IT test fails with ClassNotFoundExceptions when Jetty starts the 
local server:

(...)
[WARNING] Failed startup of context 
oeje10mp.MavenWebAppContext@54bd2345{/solr,/solr,b=file:///(...)/solr-connector-tests/src/main/webapp/,a=STOPPED,h=oeje10s.SessionHandler@10897221{STOPPED}}{file:///(...)/solr-connector-tests/src/main/webapp/}
java.lang.NoClassDefFoundError: 
org/apache/solr/common/cloud/ClusterPropertiesListener
     at java.lang.Class.getDeclaredConstructors0 (Native Method)
     at java.lang.Class.privateGetDeclaredConstructors (Class.java:2985)
     at java.lang.Class.getConstructor0 (Class.java:3180)
     at java.lang.Class.getDeclaredConstructor (Class.java:2491)
     at 
org.eclipse.jetty.ee10.servlet.ServletContextHandler$ServletScopedContext.createInstance 
(ServletContextHandler.java:2023)
     at org.eclipse.jetty.ee10.servlet.BaseHolder.createInstance 
(BaseHolder.java:203)
(...)


But:

When you look at the pom of solr-core-10.0.0 there are indeed lots of 
dependencies; if I counted correctly 76 in sum, 9 having scope 
"compiled" and 67 with scope "runtime".
Additionally the poms of solr-core-9.10.1 and solr-core-10.0.0 don't 
differ much. The dependencies are basically the same, some with newer 
versions; a few removed, a few added IIRC.


To make the IT work again I manually have to add about a third of the 
dependencies defined in solr-core-10.0.0 such as 
org.apache.solr:solr-solrj, org.apache.solr:solr-solrj-zookeeper, tons 
of lucene dependencies etc.


Has somehere a clue why this is necessary?


Regards

Thorsten
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