Hi, this is not a leak, lsof will report "deleted" files with filehandles still open, when at the time when the changes were committed by IndexWriter, in parallel another IndexReader is open, that stays on an older snapshot of the files. In that case, this IndexReader still uses files, not yet completely deleted by the file system (inode is still there, but directory entry is already deleted). You have to use IndexReader.openIfChanged() or open a completely new instance with IndexReader.open() to get an updated view on the index after committing changes to IndexWriter. Don't forget to close the old IndexReader! If you don't do this, the older snapshot view is still references, preventing files from being completely deleted and disappearing from lsof.
Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Jiajun Chen [mailto:cjjvict...@gmail.com] > Sent: Thursday, September 13, 2012 6:36 AM > To: general@lucene.apache.org > Subject: file handle leaks appearing on Index files > > heapdump show the instance of IndexReader hava 164 at Thu Sep 13 12:04:00 > CST 2012. > > > $ lsof |grep deleted > > reports the following: > ...... > java 13436 uu 5086r REG 9,4 7573 79311898 > /var/index/full/20120910/_v68n.fdt (deleted) > java 13436 uu 5087r REG 9,4 2340 79311970 > /var/index/full/20120910/_v68n.fdx (deleted) > java 13436 uu 5088r REG 9,4 2058 79311887 > /var/index/full/20120910/_v68o.fdt (deleted) > java 13436 uu 5089r REG 9,4 636 79311854 > /var/index/full/20120910/_v68o.fdx (deleted) > java 13436 uu 5090w REG 9,4 8038 79312040 > /var/index/full/20120910/_v68p.fdt (deleted) > java 13436 uu 5091r REG 9,4 2476 79312050 > /var/index/full/20120910/_v68p.fdx (deleted) > java 13436 uu 5092r REG 9,4 7015 79312087 > /var/index/full/20120910/_v68q.fdt (deleted) > java 13436 uu 5093r REG 9,4 2332 79312091 > /var/index/full/20120910/_v68q.fdx (deleted) > java 13436 uu 5094r REG 9,4 648 79312128 > /var/index/full/20120910/_v68r.fdt (deleted) ..... > > $ lsof |grep deleted |wc -l ;date > > reports the following: > > 494 > Wed Sep 12 23:11:40 CST 2012 > > 506 > Wed Sep 12 23:22:57 CST 2012 > > 560 > Wed Sep 12 23:34:56 CST 2012 > > 560 > Wed Sep 12 23:46:29 CST 2012 > > 560 > Wed Sep 12 23:49:56 CST 2012 > > 566 > Wed Sep 12 23:56:08 CST 2012 > > 4275 > Thu Sep 13 12:04:00 CST 2012
