On Apr 23, 2007, at 1:08 AM, Lucifer Hammer wrote:
I'm curious, why is migrating the index not OK when it is OK to
upgrade the software? It doesn't really add up in my head.
We keep our indexed archives on write-once media. If we're forced
to move
our indexes up to a newer format, then we'd have to rewrite all our
archives...
I'd keep around the software used to read those indexes also, as Karl
suggested.
But even then, will Java 7.0 be able to run Java 1.5 JARs?! ;) So
maybe you should also keep around an entire machine (or virtual
image) that can read those indexes? But then what if the 1.0 power
cord is not compatible with your future 5.0 wirelessly electric
office building? I'm being silly, of course, but at the very least
I recommend you keep around at least the basics of the software
system used to read the indexes now. In the past, we've kept the
entire build system of our software in version control (i.e. Ant
itself, and all its dependencies).
Erik
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