-----Original Message-----
From: Christopher Schultz <ch...@christopherschultz.net>
Sent: Wednesday, January 20, 2021 4:41 PM
To: users@tomcat.apache.org
Subject: Re: Reg: Jars under web-inf lib being accessed by tomcat even when the
application is not running.
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use caution when opening attachments or clicking links from unknown senders or
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Jalaj,
On 1/19/21 14:34, Jalaj Asher wrote:
Yes the auto deploy is set to false in our environment.
How about auto-reload for the application? auto-deploy is a property
of the host, not the application (context).
I am not sure which background processor are you referring to ? if
you can share that info I can check on it.
Tomcat runs a background processing thread that allows various
components (e.g. engine, context, etc.) to perform background tasks.
One such task is checking for file-updates that may trigger a reload.
These checks are skipped when auto-reload is disabled.
lsof usually shows a snapshot of file handles. How are you determining
that Tomcat is /repeatedly/ opening files and not just keeping them open?
Thanks,
-chris
-----Original Message-----
From: Christopher Schultz <ch...@christopherschultz.net>
Sent: Tuesday, January 19, 2021 11:46 AM
To: users@tomcat.apache.org
Subject: Re: Reg: Jars under web-inf lib being accessed by tomcat even when the
application is not running.
Attention: This email was sent from someone outside of eClinicalWorks. Always
use caution when opening attachments or clicking links from unknown senders or
when receiving unexpected emails.
Jalaj,
On 1/18/21 11:13, Jalaj Asher wrote:
We have a situation where in we are seeing with tomcat 8.5 and higher that even
when the application is not in use , tomcat is accessing different jars in that
web-inf/ lib folder every few seconds or few minutes.
These jars are not getting loaded in memory , we profiled it to check if they
were getting loaded in the heap or the metaspace area but that was not the case.
When I ran the lsof command though I could see that multiple jars were being
accessed (read) from that folder very frequently, with no application usage.
Any reason or any setting that you are aware off that could be
causing this. I did enable the all setting for localhost under
logging properties as well as the below option
org.apache.tomcat.util.http = ALL
but none shows the files being accessed unless I run the LSOF command on linux.
I am not sure why is tomcat reading those files multiple times in a minute.
Also wanted to see if there is a setting to switch off this behavior.
Is your application reloadable? Does the file-access timing you are observing
line-up with the background processor's interval?
-chris
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