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Roger,
Varley, Roger wrote:
> I've finally sussed it. Because we're still in development, we've
> been fairly cavalier about how we've been calling the initial servlet
> (as localhost/servlet, hostname/servlet and by IP address/servlet)
> and some of
>
> Hi
>
> I've been undertaking a major tomcat upgrade, moving from
> Tomcat 4.1.31 running on Win NT with IIS 1.2 to Tomcat 5.5.20
> running on Win 2003 Server with IIS 6.0. I'm just about
> there, but I've got a problem with a servlet that runs fine
> under the old setup but exhibits stran
Well, haven't looked at the code of either version (4.x, 5.x),
however, I figured that 5.x makes a bit more use of Java's
threading-features. Besides, unsynchronized hashmaps are a
#1-candidate for errors that are either strange, not reproducible and
in cases where you think you should file a bug-
>
> Besides, HashMap is not thread-safe, have you tried it with a
> thread-safe implementaion (i.e. Map m =
> Collections.synchronizedMap(new HashMap(...));)
>
Yep, that fixed it. Interestingly, the original servlet using the hashmap
continues to work fine with Tomcat 4.1.31. I can only surmise
Hi Roger,
just a shot from the hip:
Maybe you want to overwrite the method public int hashcode() for the
objects being put into the hashmap - you should not rely on the
default implementation of java.lang.Object.hashcode().
Besides, HashMap is not thread-safe, have you tried it with a
thread-sa
> I think you're going to have to be a bit less vague if you
> want any real
> responses. A description of the actual symptoms, exact error
> messages,
> log entries, etc., would help. "Strange behaviour" doesn't
> give anyone
> much to go on.
Sorry, Im still grappling with the new Tomcat. Th
> From: Varley, Roger [mailto:[EMAIL PROTECTED]
> Subject: Strange behaviour after upgrade to 5.5.20
>
> I'm just about there, but I've got a problem with a servlet
> that runs fine under the old setup but exhibits strange
> behaviour under the new setup.
I think you're going to have to be a bit
