[infinispan-issues] [JBoss JIRA] (ISPN-2788) NullPointerException appears in case passing null as an exclusion list to LuceneCacheLoader.loadAllKeys()

[Anna Manukyan (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12752251#comment-12752251 ] 

Anna Manukyan commented on ISPN-2788:
-------------------------------------

My code is the following:

{code}
File rootDir = createRootDir(); //Creating root directory of the index
EmbeddedCacheManager cacheManager = null;

createIndex(rootDir, indexName, elementCount, true); //Manually writes some data to the index with number of elementCount to index with name indexName - as is done in org.infinispan.lucene.cacheloader.IndexCacheLoaderTest

ConfigurationBuilder builder = new ConfigurationBuilder();
builder
   .loaders()
   .addLoader()
   .cacheLoader( new LuceneCacheLoader() )
   .addProperty(LuceneCacheLoaderConfig.LOCATION_OPTION, rootDir.getAbsolutePath())
   .addProperty(LuceneCacheLoaderConfig.AUTO_CHUNK_SIZE_OPTION, "1024");

EmbeddedCacheManager cacheManager = TestCacheManagerFactory.createCacheManager(builder);
LuceneCacheLoader cacheLoader = (LuceneCacheLoader) TestingUtil.extractComponent(cacheManager.getCache(),
                                                                                          CacheLoaderManager.class).getCacheLoader();

Set keyList = cacheLoader.loadAllKeys(null); // <<<----- This is the line which throws the NullPointerException.
{code}

According to JavaDoc, if null is passed as a parameter to loadAllKeys() method, then it should load all keys without exclusions, but instead it throws NullPointerException.
                
> NullPointerException appears in case passing null as an exclusion list to LuceneCacheLoader.loadAllKeys()
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: ISPN-2788
>                 URL: https://issues.jboss.org/browse/ISPN-2788
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Lucene Directory
>    Affects Versions: 5.2.0.Final
>            Reporter: Anna Manukyan
>            Assignee: Sanne Grinovero
>             Fix For: 5.3.0.Alpha1
>
>
> NullPointerException is thrown in case of passing null as a keyExclusionList to LuceneCacheLoader.loadAllKeys() method.
> The log is: 
> {code}
> java.lang.NullPointerException
> 	at org.infinispan.lucene.cachestore.DirectoryLoaderAdaptor.loadSomeKeys(DirectoryLoaderAdaptor.java:108)
> 	at org.infinispan.lucene.cachestore.DirectoryLoaderAdaptor.loadAllKeys(DirectoryLoaderAdaptor.java:174)
> 	at org.infinispan.lucene.cachestore.LuceneCacheLoader.loadAllKeys(LuceneCacheLoader.java:126)
> 	at org.infinispan.lucene.cacheloader.LuceneCacheLoaderTest.testLoadAllKeysWithNullExclusion(LuceneCacheLoaderTest.java:263)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:601)
> 	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
> 	at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
> 	at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
> 	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
> 	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
> 	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
> 	at org.testng.TestRunner.privateRun(TestRunner.java:767)
> 	at org.testng.TestRunner.run(TestRunner.java:617)
> 	at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
> 	at org.testng.SuiteRunner.access$000(SuiteRunner.java:37)
> 	at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:368)
> 	at org.testng.internal.thread.ThreadUtil$2.call(ThreadUtil.java:64)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> 	at java.lang.Thread.run(Thread.java:722)
> {code}

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