Managing parallel change in JDK 8 and JDK 9

[mark.reinhold at oracle.com]

2013/12/2 17:37 -0800, volker.simonis at gmail.com:
> if I understand this right, there's another downside of the approach
> you propose: you can't easily downport changes from JDK9 to JDK8
> update releases. This is because changes in JDK9 (i.e. our
> ppc-aix-port) will have ancestor changes in JDK9 which are not in JDK8
> (i.e. they are there, but they are different changes with the same
> content because they have been imported and not pulled into JDK9).
> 
> So what will be the best way to downport something from JDK9 to JDK8.
> The only possiblity I see is again to "cherry pick"; i.e., export the
> change from JDK9 and import it into JDK8. Do you see other
> possibilities?

No, but as Alan said, we already do this all the time from JDK 8
to the JDK 7 updates.  It's really not that hard -- the hg import
and export commands take care of most of the details.

- Mark


P.S.  It's "JDK 8" and "JDK 9".  Note the space after the "K".