Re: deleteOnExit doesn't seem to be working for session temporary files..

[Simon Kitching <sk...@apache.org>]

On Fri, 2005-03-18 at 10:27 -0800, Joseph Silverman wrote:
> In our setup, we have JSP's that create a "temporary" file with the 
> deleteOnExit flag set.
> The session timeout (getMaxInactiveInterval) appears to be the 
> "default" of 1800 seconds (30 minutes).
> 
> We are blasting our servlet container (tomcat and jetty) with JSP 
> fetches (that don't handle cookies - http_load if you are curious as to 
> what we are using) and noting that these files stick around till the 
> servlet container itself quits (the java process goes away).  At that 
> point ALL the files are deleted, and it can take HOURS in some cases to 
> do so.
> 
> Is this expected behavior?  We think that these files should be deleted 
> when the session "expires".  That seems like the right thing to do.

What you are seeing is what I would expect. The javadoc for
File.deleteOnExit very clearly states that the file is deleted *when the
virtual machine terminates*. 

A session is *not* a virtual machine. 

I suggest you use a SessionListener object instead; this should be
invoked when the session expires, and you can delete the files then.

Regards,

Simon


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