This prevents too-difficult regular expressions from consuming
excessive RAM/CPU; the default max_determinized_states is 10,000 (same
as Lucene) but query_string and regepx query/filter can override
per-request.
The also upgrades to a new Lucene 5.0.0 snapshot.
Closes#8386Closes#8357
Today we use the File API for file deletion as well as recursive
directory deletions. This API returns a boolean if operations
are successful while hiding the actual reason why they failed.
The Path API throws and actual exception that might provide better
insights and debug information.
Closes#8366
Michael McCandless
Robert Muir
Simon Willnauer
Ryan Ernst