The app fails to hand off the segments to the "historical" coordinator (or
whatever it's called) so all my segments become immediately unavailable. On
the 2 versions of the latest OpenJDK (8 and 11) on which I've tried this, I get
the same issue. What I believe is happening can be fixed with a code change
to: DruidCoordinator.java @line 690. the instance inner class
CoordinatorHistoricalManagerRunnable has a constructor that is referencing
DruidCoordinator.this prior to the super(...) constructor being invoked. This
causes a failure. A work-around is to pass the coordinator instance to the
constructor:
CoordinatorHistoricalManagerRunnable(final DruidCoordinator c, final int
startingLeaderCounter)
and then, reference c instead of DruidCoordinator.this throughout that
constructor method. You can probably make this a static inner class at that
point, although I haven't analyzed it that far.
The exception that shows up in the coordinator-overlord.log is:
2019-10-31T16:23:02,953 ERROR [LeaderSelector[/druid/coordinator/_COORDINATOR]]
org.apache.curator.framework.listen.ListenerContainer - Listener
(org.apache.druid.curator.discovery.CuratorDruidLeaderSelector$1@1e7d3d87)
threw an exception
java.lang.ClassFormatError: Illegal field name
"org.apache.druid.server.coordinator.DruidCoordinator$this" in class
org/apache/druid/server/coordinator/DruidCoordinator$CoordinatorHistoricalManagerRunnable
I have tried to make this change myself and to test it, but I am unable to
build the project due to rat licensing issues. Also, when I don't run rat via
the mvn build, i get another error: gpg: signing failed: No pinentry
..
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-gpg-plugin:1.6:sign (sign-release-artifacts) on
project druid: Exit code: 2 -> [Help 1]
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