[jbosscache-dev] Issue with FileCacheLoader with EJB3 SFSB Cache

[Brian Stansberry]

The stress testing Philip Thurmond's been doing on ejb3 clustering has 
surfaced an issue with FileCacheLoader (see 
http://jira.jboss.com/jira/browse/EJBTHREE-937).  Basically we're 
hitting file system limits on the number of directories.

I can fix the issue by making a simple change to the structure of cached 
data.  There would be a performance hit from that (probably not large). 
But, since we recommend not using FileCacheLoader anyway, I was planning 
to work on getting away from FileCacheLoader anyway for AS 5; this issue 
tempts me to do it now.

What do people think about using JdbmCacheLoader instead of 
FileCacheLoader?  It's been part of JBC for nearly a year now, and I'm 
not aware of any problems with it. Elias, I'd particularly like your 
opinion on this, as you obviously know the most about JdbmCacheLoader 
and probably know the most about JDBM.

QE's doing intensive stress testing of 4.2, so if we switch 
JdbmCacheLoader will be put through its paces.

-- 
Brian Stansberry
Lead, AS Clustering
JBoss, a division of Red Hat
brian.stansberry at redhat.com