On 29/10/2019 14:31, Tim K wrote:
> I'm on Tomcat 9.0.21 on Linux. I have Jsps that get updated while
> Tomcat is running. I believe development mode is set to true by
> default, I do not have it set to true or false in the
> $CATALINA_BASE/conf/web.xml for the Jsp servlet init-params. I have a
> cluster of 4-8 servers across different envs. I'm noticing an
> intermittent issue where 1 or more of my tomcat instances do not
> always compile the latest Jsp content while the server is under load.
> I've tried debugging the org.apache.jasper.compiler, it appears that
> the class/java files of the tomcat work directory are getting
> deleted/regenerated (get a new timestamp as well) but occasionally the
> contents of the Jsp becomes out of sync in the generated class file
> within the tomcat work directory. I've tried different combinations
> of development mode, checkInterval, modificationTestInterval but none
> seem to help resolve this issue. This only seems to be an issue when
> the server is under a load. I was able to reproduce in my lower env
> (4 server cluster) while hitting the Jsp every 1 seconds while
> changing the jsp contents. I can make a subsequent change and the Jsp
> content likely get's picked up by the same server(s) which previous
> didn't pick it up.
That you see the issue when hitting the JSP once a second makes me think
it is something to do with timestamp resolution. Are you making
modifications within a similarly short time-frame? Or do you still see
the issue when the modifications are, say, minutes apart?
Mark
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