[ http://issues.apache.org/jira/browse/LUCENE-555?page=comments#action_12445520 ] Tero Hagström commented on LUCENE-555: --------------------------------------
We managed to identify the source of the index corruption. A system administrator manually removed a file from the index to free disk space after receiving an alert on low free disk space. So, "appears to have resulted from a disk partition being full", while being true in a sort of indirect manner, is by no means basis for reopening this or another issue. Sorry for causing undue alarm. Mea culpa. We still have one unidentified Lucene index corruption to account for. That one happened roughly at the same time that HW failure testing was done on the SAN used for storing the Lucene index. Basically disconnecting optical fibers on the fly. That happened a while ago and I don't have enough details to file a decent bug report. I think we'll settle for the fact that the Lucene index can get corrupt for one reason or another (some of which are not in the realm of Lucene developers), and concentrate on having a good backup policy. > Index Corruption > ---------------- > > Key: LUCENE-555 > URL: http://issues.apache.org/jira/browse/LUCENE-555 > Project: Lucene - Java > Issue Type: Bug > Components: Index > Affects Versions: 1.9 > Environment: Linux FC4, Java 1.4.9 > Reporter: dan > Priority: Critical > > Index Corruption > >>>>>>>>> output > java.io.FileNotFoundException: ../_aki.fnm (No such file or directory) > at java.io.RandomAccessFile.open(Native Method) > at java.io.RandomAccessFile.<init>(RandomAccessFile.java:204) > at > org.apache.lucene.store.FSIndexInput$Descriptor.<init>(FSDirectory.java:425) > at org.apache.lucene.store.FSIndexInput.<init>(FSDirectory.java:434) > at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:324) > at org.apache.lucene.index.FieldInfos.<init>(FieldInfos.java:56) > at > org.apache.lucene.index.SegmentReader.initialize(SegmentReader.java:144) > at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:129) > at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:110) > at > org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:674) > at > org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:658) > at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:517) > >>>>>>>>> input > - I open an index, I read, I write, I optimize, and eventually the above > happens. The index is unusable. > - This has happened to me somewhere between 20 and 30 times now - on indexes > of different shapes and sizes. > - I don't know the reason. But, the following requirement applies regardless. > >>>>>>>>> requirement > - Like all modern database programs, there has to be a way to repair an > index. Period. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
