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On 22/02/2025 10:38, Ing. Andrea Vettori wrote:
Hello,
I’m facing an issue that can't fully understand myself. I’m using struts since
year 2000 (version 6.7 at the moment) in web apps with a mix of JSP and
Freemarker templates. I use Tomcat as servlet container.
Recently I found that when an app is hot deployed, I constantly find that some
non heap memory is consumed. Analyzing thread dumps I found that an application
context object is left in memory and this is referenced by a struts related
class and a FreeMarker related class (that I think is created by struts).
For example in the image attached you can see three application contexts that
are caused by hot deploying the app two times after the tomcat server has
started.
The “bigger” context is the one of the running app. The two smaller ones are
left after the two hot deploys. If I do N hot deploys I later found the same
result with N+1 contexts.
This is consuming a lot of Metaspace at each hot deploy.
Any hint on what can cause this ?
Thanks
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