[
https://jira.codehaus.org/browse/MINDEXER-44?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=300289#comment-300289
]
Milos Kleint commented on MINDEXER-44:
--------------------------------------
a similar issue occurred in http://netbeans.org/bugzilla/show_bug.cgi?id=213466
The initial problem in this case seems to be this stacktrace:
java.lang.NullPointerException
at org.apache.lucene.store.Directory.copy(Directory.java:200)
at
org.apache.maven.index.context.IndexUtils.copyDirectory(IndexUtils.java:51)
at
org.apache.maven.index.context.DefaultIndexingContext.replace(DefaultIndexingContext.java:832)
at
org.apache.maven.index.updater.DefaultIndexUpdater.loadIndexDirectory(DefaultIndexUpdater.java:218)
at
org.apache.maven.index.updater.DefaultIndexUpdater.access$300(DefaultIndexUpdater.java:76)
at
org.apache.maven.index.updater.DefaultIndexUpdater$LuceneIndexAdaptor.setIndexFile(DefaultIndexUpdater.java:642)
at
org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:879)
at
org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:157)
at
org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.indexLoadedRepo(NexusRepositoryIndexerImpl.java:498)
at
org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.loadIndexingContext(NexusRepositoryIndexerImpl.java:288)
at
org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.access$300(NexusRepositoryIndexerImpl.java:139)
at
org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$2.run(NexusRepositoryIndexerImpl.java:540)
at
org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$2.run(NexusRepositoryIndexerImpl.java:531)
at org.openide.util.Mutex.writeAccess(Mutex.java:397)
at
org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.indexRepo(NexusRepositoryIndexerImpl.java:531)
at
org.netbeans.modules.maven.indexer.api.RepositoryIndexer.indexRepo(RepositoryIndexer.java:62)
at
org.netbeans.modules.maven.ProjectOpenedHookImpl$1.run(ProjectOpenedHookImpl.java:202)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
[catch] at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)
> NPE from DefaultSearchEngine.doSearchWithCeiling
> ------------------------------------------------
>
> Key: MINDEXER-44
> URL: https://jira.codehaus.org/browse/MINDEXER-44
> Project: Maven Indexer
> Issue Type: Bug
> Affects Versions: 4.1.1
> Reporter: Jesse Glick
> Assignee: Olivier Lamy
> Priority: Minor
> Fix For: 4.1.3
>
>
> http://netbeans.org/bugzilla/show_bug.cgi?id=202138 reports
> http://statistics.netbeans.org/exceptions/messageslog?id=533660 which shows
> {code}
> java.lang.NullPointerException
> at
> org.apache.maven.index.DefaultSearchEngine.doSearchWithCeiling(DefaultSearchEngine.java:316)
> at
> org.apache.maven.index.DefaultSearchEngine.searchFlat(DefaultSearchEngine.java:169)
> at
> org.apache.maven.index.DefaultSearchEngine.searchFlatPaged(DefaultSearchEngine.java:102)
> at
> org.apache.maven.index.DefaultSearchEngine.searchFlatPaged(DefaultSearchEngine.java:77)
> {code}
> This comes after some index download problems like
> {code}
> java.io.FileNotFoundException: Resource nexus-maven-repository-index.gz does
> not exist
> at
> org.apache.maven.index.updater.WagonHelper$WagonFetcher.retrieve(WagonHelper.java:196)
> at
> org.apache.maven.index.updater.WagonHelper$WagonFetcher.retrieve(WagonHelper.java:166)
> at
> org.apache.maven.index.updater.DefaultIndexUpdater.loadIndexDirectory(DefaultIndexUpdater.java:191)
> at
> org.apache.maven.index.updater.DefaultIndexUpdater.access$300(DefaultIndexUpdater.java:76)
> at
> org.apache.maven.index.updater.DefaultIndexUpdater$LuceneIndexAdaptor.setIndexFile(DefaultIndexUpdater.java:642)
> at
> org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:861)
> at
> org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:157)
> {code}
> It seems that the {{DefaultIndexingContext.indexSearcher}} is null, for
> whatever reason, and {{searchFlatPaged}} is not verifying that it has been
> passed a valid context and does not attempt to fix an invalid context,
> perhaps using {{openAndWarmupReaders}}.
> Probably the caller is at fault for attempting a search on a context with no
> valid index, but this ought to be reported more clearly than with an NPE
> several calls down the stack, and there should be some documented method for
> checking that a context is somehow complete and ready for use.
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