Lucene 索引器在 Windows 上工作，在 Linux 上失败

Question

我在 Jetty 9.2 上运行了 java 应用程序。两者都使用相同版本的 Jetty。索引器在应用程序部署后第一次启动时运行。我在 Netbeans 中的 Windows 10 开发盒上没有任何问题。当我把它放在 Linux 机器上时它不起作用，我只有 SSH 访问和有限的权限。

java 代码，Person 类首先运行，Organization 类次之。都在同一个休眠会话中

public static void reindexViaMassIndexer(Class<?> type, SessionFactory factory) {
    Session session = factory.getCurrentSession();
    FullTextSession fullTextSession = Search.getFullTextSession(session);
    MassIndexerProgressMonitor monitor = new SimpleIndexingProgressMonitor();

    try {
        fullTextSession
                .createIndexer(type)
                .typesToIndexInParallel(1)
                .batchSizeToLoadObjects(BATCH_SIZE)
                .cacheMode(CacheMode.NORMAL)
                .threadsToLoadObjects(10)
                .idFetchSize(BATCH_SIZE)
                .progressMonitor(monitor)
                .startAndWait();
    } catch (InterruptedException ex) {
        Logger.getLogger(HibernateLuceneIndexer.class.getName()).log(Level.SEVERE, null, ex);
    }

}

Pom 文件

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-search-orm</artifactId>
        <version>5.2.0.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-c3p0</artifactId>
        <version>4.3.9.Final</version>
    </dependency>

错误输出

17:48:00,188 ERROR LogErrorHandler:67 - HSEARCH000058: Exception occurred org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/tmp/cyberdex_files/org.vtarc.CyberConnections.backend.entity.Organization/write.lock: java.nio.channels.OverlappingFileLockException
Primary Failure:
    Entity org.vtarc.CyberConnections.backend.entity.Organization  Id null  Work Type  org.hibernate.search.backend.PurgeAllLuceneWork

org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/tmp/cyberdex_files/org.vtarc.CyberConnections.backend.entity.Organization/write.lock: java.nio.channels.OverlappingFileLockException
    at org.apache.lucene.store.Lock.obtain(Lock.java:89)
    at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:755)
    at org.hibernate.search.backend.impl.lucene.IndexWriterHolder.createNewIndexWriter(IndexWriterHolder.java:131)
    at org.hibernate.search.backend.impl.lucene.IndexWriterHolder.getIndexWriter(IndexWriterHolder.java:97)
    at org.hibernate.search.backend.impl.lucene.AbstractWorkspaceImpl.getIndexWriter(AbstractWorkspaceImpl.java:112)
    at org.hibernate.search.backend.impl.lucene.LuceneBackendQueueTask.applyUpdates(LuceneBackendQueueTask.java:81)
    at org.hibernate.search.backend.impl.lucene.LuceneBackendQueueTask.run(LuceneBackendQueueTask.java:47)
    at org.hibernate.search.backend.impl.lucene.SyncWorkProcessor$Consumer.applyChangesets(SyncWorkProcessor.java:145)
    at org.hibernate.search.backend.impl.lucene.SyncWorkProcessor$Consumer.run(SyncWorkProcessor.java:135)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.channels.OverlappingFileLockException
    at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255)
    at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152)
    at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1108)
    at java.nio.channels.FileChannel.tryLock(FileChannel.java:1155)
    at org.apache.lucene.store.NativeFSLock.obtain(NativeFSLockFactory.java:169)
    at org.apache.lucene.store.Lock.obtain(Lock.java:96)
    ... 9 more

人员索引成功，组织失败。注意父目录也是jetty:jetty (user:group)。

[jetty@server org.vtarc.CyberConnections.backend.entity.Person]$ ls -l
-rw-r-----. 1 jetty jetty  1844 Oct 20 18:43 _9.fdt
-rw-r-----. 1 jetty jetty    67 Oct 20 18:43 _9.fdx
-rw-r-----. 1 jetty jetty  1310 Oct 20 18:43 _9.fnm
-rw-r-----. 1 jetty jetty  3687 Oct 20 18:43 _9_Lucene41_0.doc
-rw-r-----. 1 jetty jetty  4310 Oct 20 18:43 _9_Lucene41_0.pos
-rw-r-----. 1 jetty jetty 20500 Oct 20 18:43 _9_Lucene41_0.tim
-rw-r-----. 1 jetty jetty   576 Oct 20 18:43 _9_Lucene41_0.tip
-rw-r-----. 1 jetty jetty  1530 Oct 20 18:43 _9.nvd
-rw-r-----. 1 jetty jetty   171 Oct 20 18:43 _9.nvm
-rw-r-----. 1 jetty jetty   386 Oct 20 18:43 _9.si
-rw-r-----. 1 jetty jetty   102 Oct 20 18:43 segments_a
-rw-r-----. 1 jetty jetty    36 Oct 20 18:43 segments.gen
-rw-r-----. 1 jetty jetty     0 Oct 20 14:31 write.lock
[jetty@server org.vtarc.CyberConnections.backend.entity.Person]$ cd ../org.vtarc.CyberConnections.backend.entity.Organization/
[jetty@server org.vtarc.CyberConnections.backend.entity.Organization]$ ls -l
-rw-r-----. 1 jetty jetty 53 Oct 20 15:40 segments_5
-rw-r-----. 1 jetty jetty 36 Oct 20 15:40 segments.gen
-rw-r-----. 1 jetty jetty  0 Oct 20 14:31 write.lock

还需要什么吗？

Answer 1

一种可能的解释是您正在为同一配置创建多个 SessionFactories/EntityManagerFactories，从而多次实例化 Hibernate Search 并在索引文件上创建锁定冲突。如果是这样，好吧，不要。另见Hibernate search: persist causes sometimes OverlappingFileLockException

另一种可能的解释：这个版本的 Hibernate Search 实在是太老了。您可能遇到了一个已经解决的错误。我知道有几个与锁定相关的错误已经解决，例如这个：https://stackoverflow.com/a/46284827/6692043