Fixed portable serialization between different services versions.
Merge pull request #2478 from mdogan/fix/3.2/portable-version

Fixed portable serialization between different services versions
Merge pull request #2482 from lukasblu/maintenance-3.x

Backport: Return cached value upon IMap.get() if near cache is enabled
prevent sending unneeded operations to uninitialized recordstores & tiny clean-up
Fixed possible NullPointerException when Bundle::getSymbolicName is not set
Changed if clause
Merge pull request #2491 from noctarius/osgi-fixed-2489-maintenance

Osgi fixed 2489 maintenance
Fixed NullPointerException when new nodes join while running mapreduce operation
Merge pull request #2494 from noctarius/fix-map-reduce-maintenance

Fix map reduce backport
rename method
Topic documentation fix link to distrbuted event configuration
fixed alter function by removing wrong optimization
Merge pull request #2496 from gurbuzali/atom-ref-alter/3.2.2

Atom ref alter/3.2.2
Merge pull request #2497 from sancar/doc/topic/maint3.x

Topic documentation fix link to distrbuted event configuration