[xwiki-users] too many open files with Lucene - xwiki-users@xwiki.org

31 Jan 2013

Hello,

Since the migration from 4.1.3 to 4.4, there are "too many open files" alerts in
Tomcat (release 5.5).

I changed limit from 1024 (default value) to 4096 but the problem is not solved.

It seems there are many open files used by lucene :

Total tomcat open files :
...
 /usr/sbin/lsof |grep java | wc -l 3318

Lucene open files :
...
 /usr/sbin/lsof |grep java | grep "/xem/data"
|  wc -l 2524

Lucene "deleted" open files :
...
 /usr/sbin/lsof |grep java | grep "/xem/data"
| grep deleted |  wc -l 1663

This behavior is new with 4.4. There is a known problem with Lucene ?

Thank you

Ncg