有一次更新完代码启动系统，系统报如下异常:
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java.lang.RuntimeException: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@D:\opt\xxxx_index\place\write.lock at com.xxxx.vst.search.lucene.search.Searcher.init(Searcher.java:74) at com.xxxx.vst.search.lucene.search.Searcher.<init>(Searcher.java:53) at com.xxxx.vst.search.lucene.LuceneContext.init(LuceneContext.java:51) at com.xxxx.vst.search.listener.LuceneContextIniter.contextInitialized(LuceneContextIniter.java:21) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@D:\opt\xxxx_index\place\write.lock at org.apache.lucene.store.Lock.obtain(Lock.java:84) at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:644) at com.xxxx.vst.search.lucene.search.Searcher.init(Searcher.java:65) ... 18 more |
经查,IndexWriter的构造函数在试图获取另外一个IndexWriter已经加锁的索引目录时就会抛出一个LockObtainFailedException。但是我们系统中并没有多个IndexWriter去指定同一个目录，走查代码才发现，原来是同一个初始化方法调用了两次，一次是spring监听器里调用的，另一个是另一同事测试方便，在static模块里调用的，导致同一个lucene上下文初始化方法被调用两次，建议static模块要慎用，因为它会悄悄神不知鬼不知自己悄悄被调用。
from:http://www.tuicool.com/articles/2UBVnq7