[ http://issues.apache.org/jira/browse/LUCENE-670?page=comments#action_12433447 ] Ken Geis commented on LUCENE-670: ---------------------------------
I guess I didn't search well enough for a previously submitted bug. LUCENE-636 addresses my concerns and the patch is coded very close to how I had it in my head. Please mark this as a duplicate of LUCENE-636. (It doesn't appear that I have permission to do so.) > improper isolation (overuse of system properties) allows Lucene apps to > clobber each other > ------------------------------------------------------------------------------------------ > > Key: LUCENE-670 > URL: http://issues.apache.org/jira/browse/LUCENE-670 > Project: Lucene - Java > Issue Type: Bug > Components: Index, Store > Affects Versions: 2.0.0, 1.9 > Environment: Tomcat > Reporter: Ken Geis > Priority: Critical > > As nicely stated by the Javadoc for > org.apache.commons.discovery.tools.ManagedProperties, "System properties are > global in nature, so using them easily violates sound architectural and > design principles for maintaining separation between components and runtime > environments." Lucene's use of system properties makes it so that one web > application that uses Lucene can break another web application that uses > Lucene. > Both org.apache.lucene.index.SegmentReader and > org.apache.lucene.store.FSDirectory use system properties to locate an > implementation class. Because of this, two applications can step on each > others' toes. > So, I have two webapps running in Tomcat. One uses the Compass Framework > which sets the SegmentReader implementation class to > org.apache.lucene.index.CompassSegmentReader. My other webapp tries to > initialize SegmentReader in a different classloader, and it fails with an > ExceptionInInitializerError because it can't load that class. If I get > lucky, the non-Compass webapp loads first and things run smoothly. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
