gianm commented on issue #7215: move jetty module to Lifecycle.Stage.LAST
URL: https://github.com/apache/incubator-druid/pull/7215#issuecomment-471626803
 
 
   @clintropolis - I just realized that this may not actually solve the 
problem. It fixes one problem (Jetty stopping before the lookups module) but, I 
think, introduces another one. In the "after" log, Jetty stops before the 
historical unannounces itself fully:
   
   ```
   2019-03-08T10:33:29,371 INFO [Thread-60] 
org.apache.druid.server.initialization.jetty.JettyServerModule - Waiting 10000 
ms for unannouncement to propagate.
   2019-03-08T10:33:39,371 INFO [Thread-60] 
org.apache.druid.server.initialization.jetty.JettyServerModule - Stopping Jetty 
Server...
   2019-03-08T10:33:39,386 INFO [Thread-60] 
org.eclipse.jetty.server.AbstractConnector - Stopped 
ServerConnector@3a0aaaf0{HTTP/1.1,[http/1.1]}{0.0.0.0:8083}
   2019-03-08T10:33:39,430 INFO [Thread-60] 
org.apache.druid.server.coordination.CuratorDataSegmentServerAnnouncer - 
Unannouncing self[DruidServerMetadata{name='localhost:8083', 
hostAndPort='localhost:8083', hostAndTlsPort='null', maxSize=10000000000, 
tier='_default_tier', type=historical, priority=0}] at 
[/druid/announcements/localhost:8083]
   2019-03-08T10:33:39,430 INFO [Thread-60] 
org.apache.druid.curator.announcement.Announcer - unannouncing 
[/druid/announcements/localhost:8083]
   2019-03-08T10:33:39,440 INFO [Thread-60] 
org.apache.druid.curator.announcement.Announcer - Stopping announcer
   2019-03-08T10:33:39,440 INFO [Thread-60] 
org.apache.druid.curator.announcement.Announcer - unannouncing 
[/druid/segments/localhost:8083/localhost:8083_historical__default_tier_2019-03-08T10:33:15.556Z_8f9ee73fede947448b9f0f687490281b0]
   ```
   
   Since the server is still announced in a way that the Broker ServerView can 
see, queries will keep coming in to it even after Jetty is stopped. To address 
this, I believe the SegmentLoadDropHandler, which manages the 
`/druid/announcements` announcement, needs to stop before the Jetty server does.

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