Peter Turcsanyi 2bfffd35b2 NIFI-6317: HandleHttpRequest timeout handling issues
- set cleanup thread scheduling to 5 seconds in order to prevent stale request staying in the cache for a long time
- disable timeout handling in HandleHttpRequest in order to prevent a new flowfile being generated at request expiration
- use HttpServletResponse.SC* status codes everywhere in HandleHttpRequest, get rid of importing javax.ws.rs
- add some more error logging to make bug investigations easier
- add a short message to 503 error responses to make bug investigations easier

This closes #3490.

Signed-off-by: Mark Payne <markap14@hotmail.com>
2019-05-24 14:43:50 -04:00
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