I think I'm getting close with this (sorry for the self-replies) I tried an optimize (which we never do) and it took 30m and said this a lot:
Exception in thread "Lucene Merge Thread #4" org.apache.lucene.index.MergePolicy$MergeException: java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 34950 at org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:314) at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:291) Caused by: java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 34950 at org.apache.lucene.util.BitVector.get(BitVector.java:91) at org.apache.lucene.index.SegmentTermDocs.next(SegmentTermDocs.java:125) at org.apache.lucene.index.SegmentTermPositions.next(SegmentTermPositions.java:98) at org.apache.lucene.index.SegmentMerger.appendPostings(SegmentMerger.java:633) at org.apache.lucene.index.SegmentMerger.mergeTermInfo(SegmentMerger.java:585) at org.apache.lucene.index.SegmentMerger.mergeTermInfos(SegmentMerger.java:546) at org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:499) at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:139) at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4291) at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3932) at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:205) at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:260) Jan 2, 2009 6:05:49 PM org.apache.solr.common.SolrException log SEVERE: java.io.IOException: background merge hit exception: _ks4:C2504982 _oaw:C514635 _tll:C827949 _tdx:C18372 _te8:C19929 _tej:C22201 _1agw:C1717926 into _1agy [optimize] at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2346) at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2280) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:355) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcesso ... But then it finished. And now commits are OK again. Anyone know what the merge hit exception means and if i lost anything?
