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From Siraj Haider <>
Subject Un-used index files are not getting released
Date Thu, 04 May 2017 21:09:32 GMT
Hi all,
We recently switched to Lucene 6.5 from 2.9 and we have an issue that the files in index directory
are not getting released after the IndexWriter finishes up writing a batch of documents. We
are using IndexFolder.listFiles().length to check the number of files in index folder. We
have even tried closing/reopening the IndexWriter/SearcherManager/MMapDirectory after indexing
each batch to see if that would release the files but it didn't. When we shutdown the tomcat
and restart it, only then we see that number drop, which proves that there were some deleted
files still held by Lucene somewhere. Can you please direct me on what needs to be checked?

P.S. I apologize for the duplicate email, as I didn't see my yesterday's email in the list.



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