I would like to know, how to get all the discussions which were posted in one space. I mean , suppose take SAP mobility space, I need all the discusssions from the start of time posted in Mobility space. How to get that ?
I don't think you can get this information from the current forum software, at least it is not made public.
If you click the Activity icon on top right then you can see a widget with Trending content on the right, but this is not space specific. I have seen discussions there which did not even have a single reply, but they got more an more views because it was listed.
In the overview page of a space you can usually see a section with top liked content, which has usually blogs and documents, since discussions rarely get a like, the answers hopefully receive the likes.
Each space has a tab called Content. Here you can filter e.g. by discussions and you get all discussion posted in that space, 20 per page.
You have a few options to sort, like from old to new, or new to old.
However, last experience I made was that I could only page through about 20 pages.
So I would say there is no change to read all discussions in a space from the beginning to the end. But honestly, do you read a encyclopedia from the first to the last page, or do you just go to entry you want to see right now to tackle a problem?