We recently updated from Solr 4.0.0 to Solr 4.1.0. Because of the change we
were forced to upgrade a custom query parser. While the code change itself was
minimal, we found that our unit tests stopped working because of a
NullPointerException on line 181 of handler.component.SearchHandler:
ShardHandler shardHandler1 = shardHandlerFactory.getShardHandler();
We determined that the cause of this exception was that shardHandlerFactory was
never initialized in the solr container. The reason for this seems to be that
the shard handler is setup in core.CoreContainer::initShardHandler which is
called from core.CoreContainer::load.
When setting up the core container we were using the public
CoreContainer(SolrResourceLoader loader) constructor. This constructor never
calls the load method, so initShardHandler is never called and the shardHandler
is never initialized.
In Solr 4.0.0 the shardHandler was initialized on the calling of
getShardHandlerFactory. This code was modified and moved by revision 1422728:
SOLR-4204: Make SolrCloud tests more friendly to FreeBSD blackhole 2
environments.
We fixed our issue by using the public CoreContainer(String dir, File
configFile) constructor which calls the load method.
I just wanted to make sure that people were aware of this issue and to
determine if it really is an issue or if having the shardHandler be null was
expected behavior unless someone called the load(String dir, File configFile )
method.
Thank you,
Ted
Stack trace of error:
org.apache.solr.client.solrj.SolrServerException:
org.apache.solr.client.solrj.SolrServerException: java.lang.NullPointerException
at
org.apache.solr.client.solrj.embedded.EmbeddedSolrServer.request(EmbeddedSolrServer.java:223)
at
org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:90)
at
org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:301)
at
com.cision.search.solr.ProximityQParserTest.testInit(ProximityQParserTest.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.apache.solr.client.solrj.SolrServerException:
java.lang.NullPointerException
at
org.apache.solr.client.solrj.embedded.EmbeddedSolrServer.request(EmbeddedSolrServer.java:155)
... 27 more
Caused by: java.lang.NullPointerException
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:181)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1816)
at
org.apache.solr.client.solrj.embedded.EmbeddedSolrServer.request(EmbeddedSolrServer.java:150)
... 27 more
___________________________________________
Ted Merchant
Developer II
312-873-6667
cision.com<http://www.cision.com/>
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