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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: What is `tomcat7/common/` for?
Date Wed, 13 Mar 2019 01:01:32 GMT
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Mark,

On 3/12/19 14:39, Mark Thomas wrote:
> On 12/03/2019 14:42, Christopher Schultz wrote:
>> Joel,
>> 
>> On 3/12/19 09:43, Joel Griffith wrote:
>>> I'm upgrading a webapp server from Tomcat 7 to Tomcat 8 on
>>> Ubuntu 16.04. At installation, Tomcat 7 creates a directory 
>>> `/var/lib/tomcat7/common/`. When Tomcat 8 is installed,
>>> however, the `/var/lib/tomcat8/` directory it creates does not
>>> include a `common/` directory, and the deployment script
>>> complains that it isn't there.
>> 
>>> build.xml:129: /var/lib/tomcat8/common/lib does not exist.
>> 
>> This must be a deployment script that is managed by neither the
>> Tomcat project nor the Ubuntu package maintainers. You will need
>> to update it.
>> 
>>> I've been searching for a day and have found exactly zero 
>>> documentation on this, including on the official 8.0 migration 
>>> guide ( https://tomcat.apache.org/migration-8.html).
>> 
>> You are right; it isn't mentioned. That should be added to the 
>> migration guide.
> 
> Is is practical to try and cover changes in file system layout for 
> distributions we don't control?

No, but there is no mention of the classloader re-organization in the
migration guide.

Oh, hmm. The reason it's not in there, or in the Tomcat 7 migration
guide... is because this change was made in Tomcat *6*, and it *is* in
the migration guide... for Tomcat 6.

So, never mind.

For some reason, I thought this change was made more recently, but I
guess not.

Joel, it looks like your distribution was (still?) using that
directory in Tomcat 7 even thought Tomcat hasn't shipped that way for
... a long time. I wonder if your deployment script was accomplishing
anything by touching that directory in the first place.

- -chris
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