[rules-users] Drools upgrade

[erolagnab]

Hi,

After upgrading from 5.0.1 to 5.4.0, i've experienced some unresolvable
issue
(http://drools.46999.n3.nabble.com/UnsupportedOperationException-intermitently-tp4022719.html). 
As reproducing the issue is totally not trivial and i can't prove if
upgrading to 5.5 or even 5.6 would warantee  fixing it 100%. Hence i'm
thinking of going back to 5.0.1 which serves us okie despite the fact that
each rule update will cost lots of GC as it refreshes the whole rule
instance.

For that, the only reason we wanted to ugprade to 5.4.0 was the
KnowledgeBase incremental build feature which was introduced from 5.1.M1.
Before i spend time on figuring out whether it's possible to patch 5.0.1
with incremental build feature from 5.1.M1, i would like to seek for
suggestions and ideas in this forum.

My concerns are:
1. How big is the refactoring required to patch 5.0.1 with incremental build
feature? What side effects would i expect to have if patching successfully?
2. Was there any other option that i can take to: no intermittent issue with
my rules and GC is in a good level?

Many thanks,

Trung



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