I tried to use the 'DiscussionLastUpdated ' managed property in SharePoint 2013 to show latest commented discussions from a discussion board. I used a Content Search web part. But the web part does not update as users add comments to the discussions in the discussion board. The discussion board has unique permissions. Where the site visitors have a contribute right in addition to the read access.
I have also tried creating a new managed property named MyDiscussionLastUpdated (mapped to ows_DiscussionLastUpdated crawled property) and it was available for use in the web part after the full crawl. The problem was not resolved still.
Here are my observations:
1. If an Administrator replies on a discussion any time during the day, the web part updates (as the 'DiscussionLastUpdated ' property might have been getting updated properly) appropriately after an incremental crawl.
2. If a reader replies very as a first person of the day to reply on the discussion, the web part is updated appropriately after an incremental crawl. But the web part does not get updated for any other (if that is not the first reply on the discussion
for the day)replies from the reader after an incremental crawl.
3. Web part gets updated appropriately after a full crawl regardless of the user and the time of day.
4. All the replies are crawled properly after an incremental crawl(as well as a full crawl of course) and can be seen in the crawl log of the search service application.
Please help!
BR
-Uday
