Page pred test2

While making a stabilizer test from,  Queries and Indexing,  I found some infinite loop problems using paging predicate.  

I am adding some junit tests to clarify paging predicate behavior, when the underlying data is being change while the paging predicate is used.


Hi @gurbuzali 

In this test we are changing the value in the map,  to a value that would pass the predicate test.  
pub the predicate,  will not find it, after its change.  

what is the expected behaviour,  when using paging predicates on a map and concurrently, changing the values in the map