lucene 异常 Lock obtain timed out 解决方法

http://terje.blog.163.com/blog/static/119243712008102122316595/

 

 

一般都是索引建立的过程中，不正常操作影响了IndexWriter正常使用，那么下次在使用这个IndexWriter就有这种问题了。最简单的方法，手动删掉文件锁，重新创建一个IndexWriter实例。或者在创建实例的时候删掉锁。

 经验，将保持的IndexWriter实例取出来(为提高效率，减少对磁盘的IO，管理了IndexWriter的实例)，关闭后(异常之前建立的索引是没问题的，关闭是使他生效)，重新构造一个实例。

 

实战代码：

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                                                // org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/data/index/ipsos/weibo24/cache/201209/write.lock

                                                // 获取文件锁超时，IndexWriter关闭后，删掉锁，重新获取

                                                if (e.getMessage().indexOf("Lock obtain timed out") != -1) {

                                                      LoggerUtil.debugTrace(bizTypeEnName, _objId + " IndexWriter{ " + indexFilePath + " }获取文件锁超时，IndexWriter关闭，等待重新获取");

                                                      if (!Validate.isEmpty(indexFilePath)) {

                                                            IndexWriter indexWriter = writerMap.get(indexFilePath);

                                                            LoggerUtil.debugTrace(bizTypeEnName, _objId + " IndexWriter{ " + indexFilePath + " }关闭开始，是否为空 " + (null == indexWriter));

                                                            if (null != indexWriter) {

                                                                  indexWriter.close();

                                                                  LoggerUtil.debugTrace(bizTypeEnName, _objId + " IndexWriter{ " + indexFilePath + " }关闭成功，等待重新获取已开始");

                                                                  indexWriter = null;

                                                            }

                                                      }

                                                }

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