Jun Wang created SOLR-4324:
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             Summary: Solr cloud distribute indexing 
                 Key: SOLR-4324
                 URL: https://issues.apache.org/jira/browse/SOLR-4324
             Project: Solr
          Issue Type: Bug
          Components: contrib - DataImportHandler
    Affects Versions: 4.0
         Environment: Red Hat Enterprise Linux Server release 5.3 (Tikanga), 
Java HotSpot(TM) 64-Bit Server VM (20.0-b11, mixed mode)
            Reporter: Jun Wang


When do full import using DIH, it will delete all segments of all slice by call 
IndexWriter#deleteAll simultaneously. And deleteAll will call IDF#refresh which 
removing newly created unreferenced files.

But when IndexWriter#deleteAll is running, solr is add docs to the slice at the 
same time. So IDF#refresh could delete a segment which is a newly created after 
call of IDF#refresh before it published to IndexWriter, and after 
publishFlushedSegment this segment will added to IndexWriter's segmentInfos, 
and this could cause indexing failed when do IndexWriter#applyAllDeletes or 
some operation else.

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