我们有一个 solr 版本 4.1 的主从设置。
我们在从属服务器上复制期间遇到错误。似乎在负载下进行复制时会发生这种情况，但我们无法始终如一地重现此错误。当复制失败时，它会使从站处于不良状态（从站在下次尝试复制时会不断抛出异常）。
另外，数据文件夹下的临时索引目录有时会被遗留下来，没有清理干净。
当前 solrconfig 配置为使用 SimpleFSDirectoryFactory。
任何帮助，将不胜感激。堆栈跟踪可用如下：
09 Aug 2013 17:29:02,292 ERROR snapPuller-27-thread-1 org.apache.solr.handler.ReplicationHandler - SnapPull failed :org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1423)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1535)
at org.apache.solr.handler.SnapPuller.doCommit(SnapPuller.java:649)
at org.apache.solr.handler.SnapPuller.fetchLatestIndex(SnapPuller.java:463)
at org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:274)
at org.apache.solr.handler.SnapPuller$1.run(SnapPuller.java:224)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.io.EOFException: read past EOF: SimpleFSIndexInput(path="/opt/app/solr/home-search/multicore/product/data/index.20130809172900006/_p_2.del")
at org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.java:266)
at org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:51)
at org.apache.lucene.store.DataInput.readInt(DataInput.java:84)
at org.apache.lucene.store.BufferedIndexInput.readInt(BufferedIndexInput.java:181)
at org.apache.lucene.codecs.lucene40.BitVector.<init>(BitVector.java:346)
at org.apache.lucene.codecs.lucene40.Lucene40LiveDocsFormat.readLiveDocs(Lucene40LiveDocsFormat.java:90)
at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:62)
at org.apache.lucene.index.ReadersAndLiveDocs.getReader(ReadersAndLiveDocs.java:121)
at org.apache.lucene.index.ReadersAndLiveDocs.getReadOnlyClone(ReadersAndLiveDocs.java:218)
at org.apache.lucene.index.StandardDirectoryReader.open(StandardDirectoryReader.java:96)
at org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:369)
at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:257)
at org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:249)
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1361)
... 13 more
...
09 Aug 2013 17:29:02,408 ERROR snapPuller-263-thread-1 org.apache.solr.handler.ReplicationHandler - SnapPull failed :org.apache.solr.common.SolrException: Index fetch failed :
at org.apache.solr.handler.SnapPuller.fetchLatestIndex(SnapPuller.java:476)
at org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:274)
at org.apache.solr.handler.SnapPuller$1.run(SnapPuller.java:224)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.IllegalArgumentException: Unknown directory: org.apache.lucene.store.SimpleFSDirectory@/opt/app/solr/home-search/multicore/product/data/index.20130809172900006
at org.apache.solr.core.CachingDirectoryFactory.addCloseListener(CachingDirectoryFactory.java:87)
at org.apache.solr.handler.SnapPuller.fetchLatestIndex(SnapPuller.java:434)
... 10 more
...
09 Aug 2013 17:27:00,006 WARN snapPuller-191-thread-1 org.apache.solr.handler.SnapPuller - Exception while updating statistics
java.lang.RuntimeException: Already closed
at org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:246)
at org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:231)
at org.apache.solr.handler.SnapPuller.logReplicationTimeAndConfFiles(SnapPuller.java:548)
at org.apache.solr.handler.SnapPuller.fetchLatestIndex(SnapPuller.java:488)
at org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:274)
at org.apache.solr.handler.SnapPuller$1.run(SnapPuller.java:224)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
09 Aug 2013 17:27:00,007 ERROR snapPuller-191-thread-1 org.apache.solr.handler.ReplicationHandler - SnapPull failed :java.lang.RuntimeException: Already closed
at org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:246)
at org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:231)
at org.apache.solr.handler.SnapPuller.fetchLatestIndex(SnapPuller.java:380)
at org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:274)
at org.apache.solr.handler.SnapPuller$1.run(SnapPuller.java:224)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)