java - Camel process do not shutdown because of (not existing) inflight exchanges -

i've camel process (that run command line) route similar one:

public class profilerroute extends routebuilder {   @override  public void configure() {        from("kestrel://my_queue?concurrentconsumers=10&waittimems=500")         .unmarshal().json(jsonlibrary.jackson, myclass.class)         .process(new processor() {                  @override                  public void process(exchange exchange) throws exception {                      /* real processing [...] */                      exchange.getin().setbody(null);                  }         })         .filter(body().isnotnull())         .to("file://nowhere");  } } 

note i'm trashing whatever message after having processed it, being pure consumer process.

the process run own. no other process writing on queue, queue empty. when try kill process process not going die.

from logs see following lines (indented readability):

[                      thread-1] mainsupport$hangupinterceptor  info                                    received hang - stopping main instance. [                      thread-1] mainsupport                    info                                  apache camel stopping [                      thread-1] guicecamelcontext              info                                  apache camel 2.11.1 (camelcontext: camel-1)                                   shutting down [                      thread-1] defaultshutdownstrategy        info                                  starting graceful shutdown 1 routes                                   (timeout 300 seconds) [l-1) thread #12 - shutdowntask] defaultshutdownstrategy        info                                  waiting there still 10 inflight ,                                   pending exchanges complete,                                   timeout in 300 seconds. 

and on decreasing timeout. @ end of timeout on logs:

[l-1) thread #12 - shutdowntask] defaultshutdownstrategy        info                                  waiting there still 10 inflight ,                                   pending exchanges complete,                                  timeout in 1 seconds. [                      thread-1] defaultshutdownstrategy        warn                                  timeout occurred.                                   forcing routes shutdown now. [l-1) thread #12 - shutdowntask] defaultshutdownstrategy        warn                                  interrupted while waiting during graceful                                   shutdown, force shutdown now. [                      thread-1] kestrelconsumer                info                                    stopping consumer                                   kestrel://localhost:22133/my_queue?concurrentconsumers=10&waittimems=500 

but process not die anyway (even if try kill @ point).

i have expected after waiting time threads realise shutdown going on , stop.

i've read "graceful shutdown" document, not find explains behaviour i'm facing.

as can see logs i'm using 2.11.1 version of apache camel.

update: according claus ibsen might problem of camel-kestrel component. filed issue on asf jira camel: camel-6632

this bug in camel-kestrel, , jira ticket has been logged fix this: https://issues.apache.org/jira/browse/camel-6632