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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 10021] Include upgrade option in installer
Date Wed, 15 Dec 2010 16:22:35 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=10021

--- Comment #5 from Christopher Schultz <chris@christopherschultz.net> 2010-12-15 11:22:30
EST ---
There's also the problem of somehow merging configurations: sometimes,
server.xml is updated even within a stable line. The safest thing to do is
simply leave server.xml alone, but we might still run across problems there.

How traumatic are changes allowed to be within a particular version line
(6.0.x)? For example, the JreMemoryLeakDetectionListener was introduced at some
point in 6.0.x but hasn't always been there. That's not a problem as /adding/
something isn't a big deal. Do we ever /remove/ anything that might cause a
startup failure?

Similarly, sometimes configuration defaults change: do we have to detect
whether the old defaults are in use and then explicitly set them to their old
default values in server.xml/web.xml/context.xml?

The process of upgrading could seriously break someone's configuration.

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