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From GlenAbbeyDrive <wende.l...@gmail.com>
Subject Lucene 2.9.0 leaves too many .cfs files open, causing too many files open java error.
Date Sun, 18 Oct 2009 15:14:11 GMT

I switched from Lucene 2.4.0 to the latest 2.9.0 version and got too many
files open within a few hours from my indexing process.  Our indexing Java
process adds about 2000 documents/minute. 
The IndexWriter (iw) has the following settings:

            iw.setMaxFieldLength(1024*1024*1024); // 1G as maximum terms.
            iw.setMergeFactor(10);
            iw.setMaxMergeDocs(100000);
            iw.setMaxBufferedDocs(1000);
            iw.setRAMBufferSizeMB(128);
            iw.setUseCompoundFile(true);



The 'lsof' result shows rapidly growing number of open files in 'deleted'
state. Counting the number of these:

[server-1]#date
Sun Oct 18 11:02:37 EDT 2009
[server-1]# lsof -p 19606 |grep deleted  |wc -l
3187
[server-1]# date
Sun Oct 18 11:07:29 EDT 2009
[server-1]# lsof -p 19606 |grep deleted  |wc -l
3912

Here is a sample of those open files left behind in 'deleted' state:

java    19606 root 1861r   REG       8,17    273561 368673054
/archive/index/_5fq.cfs (deleted)
java    19606 root 1862r   REG       8,17      9428 368673053
/archive/index/_5fp.cfs (deleted)
java    19606 root 1863r   REG       8,17    363690 368673052
/archive/index/_5fo.cfs (deleted)
java    19606 root 1864r   REG       8,17     47732 368673051
/archive/index/_5fn.cfs (deleted)
java    19606 root 1865r   REG       8,17    417453 368673050
/archive/index/_5fm.cfs (deleted)
java    19606 root 1866r   REG       8,17   1518126 368673049
/archive/index/_5fl.cfs (deleted)
java    19606 root 1871r   REG       8,17   1236023 368673057
/archive/index/_5ft.cfs (deleted)
java    19606 root 1872r   REG       8,17     29743 368673055
/archive/index/_5fr.cfs (deleted)
java    19606 root 1873r   REG       8,17    273561 368673054
/archive/index/_5fq.cfs (deleted)
java    19606 root 1874r   REG       8,17      9428 368673053
/archive/index/_5fp.cfs (deleted)
java    19606 root 1875r   REG       8,17    363690 368673052
/archive/index/_5fo.cfs (deleted)
java    19606 root 1876r   REG       8,17     47732 368673051
/archive/index/_5fn.cfs (deleted)
java    19606 root 1877r   REG       8,17    417453 368673050
/archive/index/_5fm.cfs (deleted)
java    19606 root 1878r   REG       8,17   1518126 368673049
/archive/index/_5fl.cfs (deleted)
java    19606 root 1883r   REG       8,17   1389856 368673056
/archive/index/_5fs.cfs (deleted)
java    19606 root 1884r   REG       8,17     29743 368673055
/archive/index/_5fr.cfs (deleted)
java    19606 root 1885r   REG       8,17    273561 368673054
/archive/index/_5fq.cfs (deleted)
java    19606 root 1886r   REG       8,17      9428 368673053
/archive/index/_5fp.cfs (deleted)
java    19606 root 1887r   REG       8,17    363690 368673052
/archive/index/_5fo.cfs (deleted)
java    19606 root 1888r   REG       8,17     47732 368673051
/archive/index/_5fn.cfs (deleted)
java    19606 root 1889r   REG       8,17    417453 368673050
/archive/index/_5fm.cfs (deleted)
java    19606 root 1890r   REG       8,17   1518126 368673049
/archive/index/_5fl.cfs (deleted)
java    19606 root 1895r   REG       8,17   1389856 368673056
/archive/index/_5fs.cfs (deleted)
java    19606 root 1896r   REG       8,17     29743 368673055
/archive/index/_5fr.cfs (deleted)
java    19606 root 1897r   REG       8,17    273561 368673054
/archive/index/_5fq.cfs (deleted)
java    19606 root 1898r   REG       8,17      9428 368673053
/archive/index/_5fp.cfs (deleted)
java    19606 root 1899r   REG       8,17    363690 368673052
/archive/index/_5fo.cfs (deleted)
java    19606 root 1900r   REG       8,17     47732 368673051
/archive/index/_5fn.cfs (deleted)
java    19606 root 1901r   REG       8,17    417453 368673050
/archive/index/_5fm.cfs (deleted)
java    19606 root 1902r   REG       8,17   1518126 368673049
/archive/index/_5fl.cfs (deleted)
java    19606 root 1910r   REG       8,17    403610 368673058
/archive/index/_5fu.cfs (deleted)
java    19606 root 1911r   REG       8,17   1236023 368673057
/archive/index/_5ft.cfs (deleted)
java    19606 root 1912r   REG       8,17   1389856 368673056
/archive/index/_5fs.cfs (deleted)
java    19606 root 1913r   REG       8,17     29743 368673055
/archive/index/_5fr.cfs (deleted)
java    19606 root 1914r   REG       8,17    273561 368673054
/archive/index/_5fq.cfs (deleted)
java    19606 root 1915r   REG       8,17      9428 368673053
/archive/index/_5fp.cfs (deleted)
java    19606 root 1916r   REG       8,17    363690 368673052
/archive/index/_5fo.cfs (deleted)
java    19606 root 1917r   REG       8,17     47732 368673051
/archive/index/_5fn.cfs (deleted)
java    19606 root 1918r   REG       8,17    417453 368673050
/archive/index/_5fm.cfs (deleted)
java    19606 root 1919r   REG       8,17   1518126 368673049
/archive/index/_5fl.cfs (deleted)


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